[BUGFIX] Import SQL parser for Dbal-free parsing with TYPO3 CMS 7.5+ 62/43662/2
authorStanislas Rolland <typo3@sjbr.ca>
Wed, 30 Sep 2015 15:40:26 +0000 (11:40 -0400)
committerStanislas Rolland <typo3@sjbr.ca>
Wed, 30 Sep 2015 15:51:29 +0000 (17:51 +0200)
Resolves: #70224
Change-Id: Id4760bc648e5a065d656ecda800a048e0a22222b
Reviewed-on: http://review.typo3.org/43662
Reviewed-by: Stanislas Rolland <typo3@sjbr.ca>
Tested-by: Stanislas Rolland <typo3@sjbr.ca>
ChangeLog
Classes/Database/SqlParser.php [new file with mode: 0644]
Classes/Utility/DatabaseUpdateUtility.php

index 2b3ee0d..98e14e9 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2015-09-30  Stanislas Rolland  <typo3@sjbr.ca>
+
+       * Resolves #70224: Import SQL parser for Dbal-free parsing with TYPO3 CMS 7.5+
+
 2015-09-14  Stanislas Rolland  <typo3@sjbr.ca>
 
        * Resolves #67998: Increase maxitems for cn_country_zones in TCA
diff --git a/Classes/Database/SqlParser.php b/Classes/Database/SqlParser.php
new file mode 100644 (file)
index 0000000..139a591
--- /dev/null
@@ -0,0 +1,2019 @@
+<?php
+namespace SJBR\StaticInfoTables\Database;
+
+/**
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+/**
+ * TYPO3 SQL parser class.
+ *
+ * @author Kasper Skårhøj <kasperYYYY@typo3.com>
+ */
+class SqlParser {
+
+       // Parser:
+       // Parsing error string
+       /**
+        * @todo Define visibility
+        */
+       public $parse_error = '';
+
+       // Last stop keyword used.
+       /**
+        * @todo Define visibility
+        */
+       public $lastStopKeyWord = '';
+
+       /**
+        * Default constructor
+        */
+       public function __construct() {
+       }
+
+       /*************************************
+        *
+        * SQL Parsing, full queries
+        *
+        **************************************/
+       /**
+        * Parses any single SQL query
+        *
+        * @param string $parseString SQL query
+        * @return array Result array with all the parts in - or error message string
+        * @see compileSQL(), debug_testSQL()
+        */
+       public function parseSQL($parseString) {
+               // Prepare variables:
+               $parseString = $this->trimSQL($parseString);
+               $this->parse_error = '';
+               $result = array();
+               // Finding starting keyword of string:
+               $_parseString = $parseString;
+               // Protecting original string...
+               $keyword = $this->nextPart($_parseString, '^(SELECT|UPDATE|INSERT[[:space:]]+INTO|DELETE[[:space:]]+FROM|EXPLAIN|DROP[[:space:]]+TABLE|CREATE[[:space:]]+TABLE|CREATE[[:space:]]+DATABASE|ALTER[[:space:]]+TABLE|TRUNCATE[[:space:]]+TABLE)[[:space:]]+');
+               $keyword = strtoupper(str_replace(array(' ', TAB, CR, LF), '', $keyword));
+               switch ($keyword) {
+                       case 'SELECT':
+                               // Parsing SELECT query:
+                               $result = $this->parseSELECT($parseString);
+                               break;
+                       case 'UPDATE':
+                               // Parsing UPDATE query:
+                               $result = $this->parseUPDATE($parseString);
+                               break;
+                       case 'INSERTINTO':
+                               // Parsing INSERT query:
+                               $result = $this->parseINSERT($parseString);
+                               break;
+                       case 'DELETEFROM':
+                               // Parsing DELETE query:
+                               $result = $this->parseDELETE($parseString);
+                               break;
+                       case 'EXPLAIN':
+                               // Parsing EXPLAIN SELECT query:
+                               $result = $this->parseEXPLAIN($parseString);
+                               break;
+                       case 'DROPTABLE':
+                               // Parsing DROP TABLE query:
+                               $result = $this->parseDROPTABLE($parseString);
+                               break;
+                       case 'ALTERTABLE':
+                               // Parsing ALTER TABLE query:
+                               $result = $this->parseALTERTABLE($parseString);
+                               break;
+                       case 'CREATETABLE':
+                               // Parsing CREATE TABLE query:
+                               $result = $this->parseCREATETABLE($parseString);
+                               break;
+                       case 'CREATEDATABASE':
+                               // Parsing CREATE DATABASE query:
+                               $result = $this->parseCREATEDATABASE($parseString);
+                               break;
+                       case 'TRUNCATETABLE':
+                               // Parsing TRUNCATE TABLE query:
+                               $result = $this->parseTRUNCATETABLE($parseString);
+                               break;
+                       default:
+                               $result = $this->parseError('"' . $keyword . '" is not a keyword', $parseString);
+               }
+               return $result;
+       }
+
+       /**
+        * Parsing SELECT query
+        *
+        * @param string $parseString SQL string with SELECT query to parse
+        * @param array $parameterReferences Array holding references to either named (:name) or question mark (?) parameters found
+        * @return mixed Returns array with components of SELECT query on success, otherwise an error message string.
+        * @see compileSELECT()
+        */
+       protected function parseSELECT($parseString, &$parameterReferences = NULL) {
+               // Removing SELECT:
+               $parseString = $this->trimSQL($parseString);
+               $parseString = ltrim(substr($parseString, 6));
+               // Init output variable:
+               $result = array();
+               if ($parameterReferences === NULL) {
+                       $result['parameters'] = array();
+                       $parameterReferences = &$result['parameters'];
+               }
+               $result['type'] = 'SELECT';
+               // Looking for STRAIGHT_JOIN keyword:
+               $result['STRAIGHT_JOIN'] = $this->nextPart($parseString, '^(STRAIGHT_JOIN)[[:space:]]+');
+               // Select fields:
+               $result['SELECT'] = $this->parseFieldList($parseString, '^(FROM)[[:space:]]+');
+               if ($this->parse_error) {
+                       return $this->parse_error;
+               }
+               // Continue if string is not ended:
+               if ($parseString) {
+                       // Get table list:
+                       $result['FROM'] = $this->parseFromTables($parseString, '^(WHERE)[[:space:]]+');
+                       if ($this->parse_error) {
+                               return $this->parse_error;
+                       }
+                       // If there are more than just the tables (a WHERE clause that would be...)
+                       if ($parseString) {
+                               // Get WHERE clause:
+                               $result['WHERE'] = $this->parseWhereClause($parseString, '^(GROUP[[:space:]]+BY|ORDER[[:space:]]+BY|LIMIT)[[:space:]]+', $parameterReferences);
+                               if ($this->parse_error) {
+                                       return $this->parse_error;
+                               }
+                               // If the WHERE clause parsing was stopped by GROUP BY, ORDER BY or LIMIT, then proceed with parsing:
+                               if ($this->lastStopKeyWord) {
+                                       // GROUP BY parsing:
+                                       if ($this->lastStopKeyWord == 'GROUPBY') {
+                                               $result['GROUPBY'] = $this->parseFieldList($parseString, '^(ORDER[[:space:]]+BY|LIMIT)[[:space:]]+');
+                                               if ($this->parse_error) {
+                                                       return $this->parse_error;
+                                               }
+                                       }
+                                       // ORDER BY parsing:
+                                       if ($this->lastStopKeyWord == 'ORDERBY') {
+                                               $result['ORDERBY'] = $this->parseFieldList($parseString, '^(LIMIT)[[:space:]]+');
+                                               if ($this->parse_error) {
+                                                       return $this->parse_error;
+                                               }
+                                       }
+                                       // LIMIT parsing:
+                                       if ($this->lastStopKeyWord == 'LIMIT') {
+                                               if (preg_match('/^([0-9]+|[0-9]+[[:space:]]*,[[:space:]]*[0-9]+)$/', trim($parseString))) {
+                                                       $result['LIMIT'] = $parseString;
+                                               } else {
+                                                       return $this->parseError('No value for limit!', $parseString);
+                                               }
+                                       }
+                               }
+                       }
+               } else {
+                       return $this->parseError('No table to select from!', $parseString);
+               }
+               // Store current parseString in the result array for possible further processing (e.g., subquery support by DBAL)
+               $result['parseString'] = $parseString;
+               // Return result:
+               return $result;
+       }
+
+       /**
+        * Parsing UPDATE query
+        *
+        * @param string $parseString SQL string with UPDATE query to parse
+        * @return mixed Returns array with components of UPDATE query on success, otherwise an error message string.
+        * @see compileUPDATE()
+        */
+       protected function parseUPDATE($parseString) {
+               // Removing UPDATE
+               $parseString = $this->trimSQL($parseString);
+               $parseString = ltrim(substr($parseString, 6));
+               // Init output variable:
+               $result = array();
+               $result['type'] = 'UPDATE';
+               // Get table:
+               $result['TABLE'] = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]+');
+               // Continue if string is not ended:
+               if ($result['TABLE']) {
+                       if ($parseString && $this->nextPart($parseString, '^(SET)[[:space:]]+')) {
+                               $comma = TRUE;
+                               // Get field/value pairs:
+                               while ($comma) {
+                                       if ($fieldName = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]*=')) {
+                                               // Strip off "=" sign.
+                                               $this->nextPart($parseString, '^(=)');
+                                               $value = $this->getValue($parseString);
+                                               $result['FIELDS'][$fieldName] = $value;
+                                       } else {
+                                               return $this->parseError('No fieldname found', $parseString);
+                                       }
+                                       $comma = $this->nextPart($parseString, '^(,)');
+                               }
+                               // WHERE
+                               if ($this->nextPart($parseString, '^(WHERE)')) {
+                                       $result['WHERE'] = $this->parseWhereClause($parseString);
+                                       if ($this->parse_error) {
+                                               return $this->parse_error;
+                                       }
+                               }
+                       } else {
+                               return $this->parseError('Query missing SET...', $parseString);
+                       }
+               } else {
+                       return $this->parseError('No table found!', $parseString);
+               }
+               // Should be no more content now:
+               if ($parseString) {
+                       return $this->parseError('Still content in clause after parsing!', $parseString);
+               }
+               // Return result:
+               return $result;
+       }
+
+       /**
+        * Parsing INSERT query
+        *
+        * @param string $parseString SQL string with INSERT query to parse
+        * @return mixed Returns array with components of INSERT query on success, otherwise an error message string.
+        * @see compileINSERT()
+        */
+       protected function parseINSERT($parseString) {
+               // Removing INSERT
+               $parseString = $this->trimSQL($parseString);
+               $parseString = ltrim(substr(ltrim(substr($parseString, 6)), 4));
+               // Init output variable:
+               $result = array();
+               $result['type'] = 'INSERT';
+               // Get table:
+               $result['TABLE'] = $this->nextPart($parseString, '^([[:alnum:]_]+)([[:space:]]+|\\()');
+               if ($result['TABLE']) {
+                       // In this case there are no field names mentioned in the SQL!
+                       if ($this->nextPart($parseString, '^(VALUES)([[:space:]]+|\\()')) {
+                               // Get values/fieldnames (depending...)
+                               $result['VALUES_ONLY'] = $this->getValue($parseString, 'IN');
+                               if ($this->parse_error) {
+                                       return $this->parse_error;
+                               }
+                               if (preg_match('/^,/', $parseString)) {
+                                       $result['VALUES_ONLY'] = array($result['VALUES_ONLY']);
+                                       $result['EXTENDED'] = '1';
+                                       while ($this->nextPart($parseString, '^(,)') === ',') {
+                                               $result['VALUES_ONLY'][] = $this->getValue($parseString, 'IN');
+                                               if ($this->parse_error) {
+                                                       return $this->parse_error;
+                                               }
+                                       }
+                               }
+                       } else {
+                               // There are apparently fieldnames listed:
+                               $fieldNames = $this->getValue($parseString, '_LIST');
+                               if ($this->parse_error) {
+                                       return $this->parse_error;
+                               }
+                               // "VALUES" keyword binds the fieldnames to values:
+                               if ($this->nextPart($parseString, '^(VALUES)([[:space:]]+|\\()')) {
+                                       $result['FIELDS'] = array();
+                                       do {
+                                               // Using the "getValue" function to get the field list...
+                                               $values = $this->getValue($parseString, 'IN');
+                                               if ($this->parse_error) {
+                                                       return $this->parse_error;
+                                               }
+                                               $insertValues = array();
+                                               foreach ($fieldNames as $k => $fN) {
+                                                       if (preg_match('/^[[:alnum:]_]+$/', $fN)) {
+                                                               if (isset($values[$k])) {
+                                                                       if (!isset($insertValues[$fN])) {
+                                                                               $insertValues[$fN] = $values[$k];
+                                                                       } else {
+                                                                               return $this->parseError('Fieldname ("' . $fN . '") already found in list!', $parseString);
+                                                                       }
+                                                               } else {
+                                                                       return $this->parseError('No value set!', $parseString);
+                                                               }
+                                                       } else {
+                                                               return $this->parseError('Invalid fieldname ("' . $fN . '")', $parseString);
+                                                       }
+                                               }
+                                               if (isset($values[$k + 1])) {
+                                                       return $this->parseError('Too many values in list!', $parseString);
+                                               }
+                                               $result['FIELDS'][] = $insertValues;
+                                       } while ($this->nextPart($parseString, '^(,)') === ',');
+                                       if (count($result['FIELDS']) === 1) {
+                                               $result['FIELDS'] = $result['FIELDS'][0];
+                                       } else {
+                                               $result['EXTENDED'] = '1';
+                                       }
+                               } else {
+                                       return $this->parseError('VALUES keyword expected', $parseString);
+                               }
+                       }
+               } else {
+                       return $this->parseError('No table found!', $parseString);
+               }
+               // Should be no more content now:
+               if ($parseString) {
+                       return $this->parseError('Still content after parsing!', $parseString);
+               }
+               // Return result
+               return $result;
+       }
+
+       /**
+        * Parsing DELETE query
+        *
+        * @param string $parseString SQL string with DELETE query to parse
+        * @return mixed Returns array with components of DELETE query on success, otherwise an error message string.
+        * @see compileDELETE()
+        */
+       protected function parseDELETE($parseString) {
+               // Removing DELETE
+               $parseString = $this->trimSQL($parseString);
+               $parseString = ltrim(substr(ltrim(substr($parseString, 6)), 4));
+               // Init output variable:
+               $result = array();
+               $result['type'] = 'DELETE';
+               // Get table:
+               $result['TABLE'] = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]+');
+               if ($result['TABLE']) {
+                       // WHERE
+                       if ($this->nextPart($parseString, '^(WHERE)')) {
+                               $result['WHERE'] = $this->parseWhereClause($parseString);
+                               if ($this->parse_error) {
+                                       return $this->parse_error;
+                               }
+                       }
+               } else {
+                       return $this->parseError('No table found!', $parseString);
+               }
+               // Should be no more content now:
+               if ($parseString) {
+                       return $this->parseError('Still content in clause after parsing!', $parseString);
+               }
+               // Return result:
+               return $result;
+       }
+
+       /**
+        * Parsing EXPLAIN query
+        *
+        * @param string $parseString SQL string with EXPLAIN query to parse
+        * @return mixed Returns array with components of EXPLAIN query on success, otherwise an error message string.
+        * @see parseSELECT()
+        */
+       protected function parseEXPLAIN($parseString) {
+               // Removing EXPLAIN
+               $parseString = $this->trimSQL($parseString);
+               $parseString = ltrim(substr($parseString, 6));
+               // Init output variable:
+               $result = $this->parseSELECT($parseString);
+               if (is_array($result)) {
+                       $result['type'] = 'EXPLAIN';
+               }
+               return $result;
+       }
+
+       /**
+        * Parsing CREATE TABLE query
+        *
+        * @param string $parseString SQL string starting with CREATE TABLE
+        * @return mixed Returns array with components of CREATE TABLE query on success, otherwise an error message string.
+        * @see compileCREATETABLE()
+        */
+       protected function parseCREATETABLE($parseString) {
+               // Removing CREATE TABLE
+               $parseString = $this->trimSQL($parseString);
+               $parseString = ltrim(substr(ltrim(substr($parseString, 6)), 5));
+               // Init output variable:
+               $result = array();
+               $result['type'] = 'CREATETABLE';
+               // Get table:
+               $result['TABLE'] = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]*\\(', TRUE);
+               if ($result['TABLE']) {
+                       // While the parseString is not yet empty:
+                       while (strlen($parseString) > 0) {
+                               // Getting key
+                               if ($key = $this->nextPart($parseString, '^(KEY|PRIMARY KEY|UNIQUE KEY|UNIQUE)([[:space:]]+|\\()')) {
+                                       $key = strtoupper(str_replace(array(' ', TAB, CR, LF), '', $key));
+                                       switch ($key) {
+                                               case 'PRIMARYKEY':
+                                                       $result['KEYS']['PRIMARYKEY'] = $this->getValue($parseString, '_LIST');
+                                                       if ($this->parse_error) {
+                                                               return $this->parse_error;
+                                                       }
+                                                       break;
+                                               case 'UNIQUE':
+
+                                               case 'UNIQUEKEY':
+                                                       if ($keyName = $this->nextPart($parseString, '^([[:alnum:]_]+)([[:space:]]+|\\()')) {
+                                                               $result['KEYS']['UNIQUE'] = array($keyName => $this->getValue($parseString, '_LIST'));
+                                                               if ($this->parse_error) {
+                                                                       return $this->parse_error;
+                                                               }
+                                                       } else {
+                                                               return $this->parseError('No keyname found', $parseString);
+                                                       }
+                                                       break;
+                                               case 'KEY':
+                                                       if ($keyName = $this->nextPart($parseString, '^([[:alnum:]_]+)([[:space:]]+|\\()')) {
+                                                               $result['KEYS'][$keyName] = $this->getValue($parseString, '_LIST', 'INDEX');
+                                                               if ($this->parse_error) {
+                                                                       return $this->parse_error;
+                                                               }
+                                                       } else {
+                                                               return $this->parseError('No keyname found', $parseString);
+                                                       }
+                                                       break;
+                                       }
+                               } elseif ($fieldName = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]+')) {
+                                       // Getting field:
+                                       $result['FIELDS'][$fieldName]['definition'] = $this->parseFieldDef($parseString);
+                                       if ($this->parse_error) {
+                                               return $this->parse_error;
+                                       }
+                               }
+                               // Finding delimiter:
+                               $delim = $this->nextPart($parseString, '^(,|\\))');
+                               if (!$delim) {
+                                       return $this->parseError('No delimiter found', $parseString);
+                               } elseif ($delim == ')') {
+                                       break;
+                               }
+                       }
+                       // Finding what is after the table definition - table type in MySQL
+                       if ($delim == ')') {
+                               if ($this->nextPart($parseString, '^((ENGINE|TYPE)[[:space:]]*=)')) {
+                                       $result['engine'] = $parseString;
+                                       $parseString = '';
+                               }
+                       } else {
+                               return $this->parseError('No fieldname found!', $parseString);
+                       }
+               } else {
+                       return $this->parseError('No table found!', $parseString);
+               }
+               // Should be no more content now:
+               if ($parseString) {
+                       return $this->parseError('Still content in clause after parsing!', $parseString);
+               }
+               return $result;
+       }
+
+       /**
+        * Parsing ALTER TABLE query
+        *
+        * @param string $parseString SQL string starting with ALTER TABLE
+        * @return mixed Returns array with components of ALTER TABLE query on success, otherwise an error message string.
+        * @see compileALTERTABLE()
+        */
+       protected function parseALTERTABLE($parseString) {
+               // Removing ALTER TABLE
+               $parseString = $this->trimSQL($parseString);
+               $parseString = ltrim(substr(ltrim(substr($parseString, 5)), 5));
+               // Init output variable:
+               $result = array();
+               $result['type'] = 'ALTERTABLE';
+               // Get table:
+               $hasBackquote = $this->nextPart($parseString, '^(`)') === '`';
+               $result['TABLE'] = $this->nextPart($parseString, '^([[:alnum:]_]+)' . ($hasBackquote ? '`' : '') . '[[:space:]]+');
+               if ($hasBackquote && $this->nextPart($parseString, '^(`)') !== '`') {
+                       return $this->parseError('No end backquote found!', $parseString);
+               }
+               if ($result['TABLE']) {
+                       if ($result['action'] = $this->nextPart($parseString, '^(CHANGE|DROP[[:space:]]+KEY|DROP[[:space:]]+PRIMARY[[:space:]]+KEY|ADD[[:space:]]+KEY|ADD[[:space:]]+PRIMARY[[:space:]]+KEY|ADD[[:space:]]+UNIQUE|DROP|ADD|RENAME|DEFAULT[[:space:]]+CHARACTER[[:space:]]+SET|ENGINE)([[:space:]]+|\\(|=)')) {
+                               $actionKey = strtoupper(str_replace(array(' ', TAB, CR, LF), '', $result['action']));
+                               // Getting field:
+                               if (\TYPO3\CMS\Core\Utility\GeneralUtility::inList('ADDPRIMARYKEY,DROPPRIMARYKEY,ENGINE', $actionKey) || ($fieldKey = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]+'))) {
+                                       switch ($actionKey) {
+                                               case 'ADD':
+                                                       $result['FIELD'] = $fieldKey;
+                                                       $result['definition'] = $this->parseFieldDef($parseString);
+                                                       if ($this->parse_error) {
+                                                               return $this->parse_error;
+                                                       }
+                                                       break;
+                                               case 'DROP':
+
+                                               case 'RENAME':
+                                                       $result['FIELD'] = $fieldKey;
+                                                       break;
+                                               case 'CHANGE':
+                                                       $result['FIELD'] = $fieldKey;
+                                                       if ($result['newField'] = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]+')) {
+                                                               $result['definition'] = $this->parseFieldDef($parseString);
+                                                               if ($this->parse_error) {
+                                                                       return $this->parse_error;
+                                                               }
+                                                       } else {
+                                                               return $this->parseError('No NEW field name found', $parseString);
+                                                       }
+                                                       break;
+                                               case 'ADDKEY':
+
+                                               case 'ADDPRIMARYKEY':
+
+                                               case 'ADDUNIQUE':
+                                                       $result['KEY'] = $fieldKey;
+                                                       $result['fields'] = $this->getValue($parseString, '_LIST', 'INDEX');
+                                                       if ($this->parse_error) {
+                                                               return $this->parse_error;
+                                                       }
+                                                       break;
+                                               case 'DROPKEY':
+                                                       $result['KEY'] = $fieldKey;
+                                                       break;
+                                               case 'DROPPRIMARYKEY':
+                                                       // ??? todo!
+                                                       break;
+                                               case 'DEFAULTCHARACTERSET':
+                                                       $result['charset'] = $fieldKey;
+                                                       break;
+                                               case 'ENGINE':
+                                                       $result['engine'] = $this->nextPart($parseString, '^=[[:space:]]*([[:alnum:]]+)[[:space:]]+', TRUE);
+                                                       break;
+                                       }
+                               } else {
+                                       return $this->parseError('No field name found', $parseString);
+                               }
+                       } else {
+                               return $this->parseError('No action CHANGE, DROP or ADD found!', $parseString);
+                       }
+               } else {
+                       return $this->parseError('No table found!', $parseString);
+               }
+               // Should be no more content now:
+               if ($parseString) {
+                       return $this->parseError('Still content in clause after parsing!', $parseString);
+               }
+               return $result;
+       }
+
+       /**
+        * Parsing DROP TABLE query
+        *
+        * @param string $parseString SQL string starting with DROP TABLE
+        * @return mixed Returns array with components of DROP TABLE query on success, otherwise an error message string.
+        */
+       protected function parseDROPTABLE($parseString) {
+               // Removing DROP TABLE
+               $parseString = $this->trimSQL($parseString);
+               $parseString = ltrim(substr(ltrim(substr($parseString, 4)), 5));
+               // Init output variable:
+               $result = array();
+               $result['type'] = 'DROPTABLE';
+               // IF EXISTS
+               $result['ifExists'] = $this->nextPart($parseString, '^(IF[[:space:]]+EXISTS[[:space:]]+)');
+               // Get table:
+               $result['TABLE'] = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]+');
+               if ($result['TABLE']) {
+                       // Should be no more content now:
+                       if ($parseString) {
+                               return $this->parseError('Still content in clause after parsing!', $parseString);
+                       }
+                       return $result;
+               } else {
+                       return $this->parseError('No table found!', $parseString);
+               }
+       }
+
+       /**
+        * Parsing CREATE DATABASE query
+        *
+        * @param string $parseString SQL string starting with CREATE DATABASE
+        * @return mixed Returns array with components of CREATE DATABASE query on success, otherwise an error message string.
+        */
+       protected function parseCREATEDATABASE($parseString) {
+               // Removing CREATE DATABASE
+               $parseString = $this->trimSQL($parseString);
+               $parseString = ltrim(substr(ltrim(substr($parseString, 6)), 8));
+               // Init output variable:
+               $result = array();
+               $result['type'] = 'CREATEDATABASE';
+               // Get table:
+               $result['DATABASE'] = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]+');
+               if ($result['DATABASE']) {
+                       // Should be no more content now:
+                       if ($parseString) {
+                               return $this->parseError('Still content in clause after parsing!', $parseString);
+                       }
+                       return $result;
+               } else {
+                       return $this->parseError('No database found!', $parseString);
+               }
+       }
+
+       /**
+        * Parsing TRUNCATE TABLE query
+        *
+        * @param string $parseString SQL string starting with TRUNCATE TABLE
+        * @return mixed Returns array with components of TRUNCATE TABLE query on success, otherwise an error message string.
+        */
+       protected function parseTRUNCATETABLE($parseString) {
+               // Removing TRUNCATE TABLE
+               $parseString = $this->trimSQL($parseString);
+               $parseString = ltrim(substr(ltrim(substr($parseString, 8)), 5));
+               // Init output variable:
+               $result = array();
+               $result['type'] = 'TRUNCATETABLE';
+               // Get table:
+               $result['TABLE'] = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]+');
+               if ($result['TABLE']) {
+                       // Should be no more content now:
+                       if ($parseString) {
+                               return $this->parseError('Still content in clause after parsing!', $parseString);
+                       }
+                       return $result;
+               } else {
+                       return $this->parseError('No table found!', $parseString);
+               }
+       }
+
+       /**************************************
+        *
+        * SQL Parsing, helper functions for parts of queries
+        *
+        **************************************/
+       /**
+        * Parsing the fields in the "SELECT [$selectFields] FROM" part of a query into an array.
+        * The output from this function can be compiled back into a field list with ->compileFieldList()
+        * Will detect the keywords "DESC" and "ASC" after the table name; thus is can be used for parsing the more simply ORDER BY and GROUP BY field lists as well!
+        *
+        * @param string $parseString The string with fieldnames, eg. "title, uid AS myUid, max(tstamp), count(*)" etc. NOTICE: passed by reference!
+        * @param string $stopRegex Regular expressing to STOP parsing, eg. '^(FROM)([[:space:]]*)'
+        * @return array If successful parsing, returns an array, otherwise an error string.
+        * @see compileFieldList()
+        */
+       public function parseFieldList(&$parseString, $stopRegex = '') {
+               $stack = array();
+               // Contains the parsed content
+               if (strlen($parseString) == 0) {
+                       return $stack;
+               }
+               // FIXME - should never happen, why does it?
+               // Pointer to positions in $stack
+               $pnt = 0;
+               // Indicates the parenthesis level we are at.
+               $level = 0;
+               // Recursivity brake.
+               $loopExit = 0;
+               // Prepare variables:
+               $parseString = $this->trimSQL($parseString);
+               $this->lastStopKeyWord = '';
+               $this->parse_error = '';
+               // Parse any SQL hint / comments
+               $stack[$pnt]['comments'] = $this->nextPart($parseString, '^(\\/\\*.*\\*\\/)');
+               // $parseString is continuously shortened by the process and we keep parsing it till it is zero:
+               while (strlen($parseString)) {
+                       // Checking if we are inside / outside parenthesis (in case of a function like count(), max(), min() etc...):
+                       // Inside parenthesis here (does NOT detect if values in quotes are used, the only token is ")" or "("):
+                       if ($level > 0) {
+                               // Accumulate function content until next () parenthesis:
+                               $funcContent = $this->nextPart($parseString, '^([^()]*.)');
+                               $stack[$pnt]['func_content.'][] = array(
+                                       'level' => $level,
+                                       'func_content' => substr($funcContent, 0, -1)
+                               );
+                               $stack[$pnt]['func_content'] .= $funcContent;
+                               // Detecting ( or )
+                               switch (substr($stack[$pnt]['func_content'], -1)) {
+                                       case '(':
+                                               $level++;
+                                               break;
+                                       case ')':
+                                               $level--;
+                                               // If this was the last parenthesis:
+                                               if (!$level) {
+                                                       $stack[$pnt]['func_content'] = substr($stack[$pnt]['func_content'], 0, -1);
+                                                       // Remove any whitespace after the parenthesis.
+                                                       $parseString = ltrim($parseString);
+                                               }
+                                               break;
+                               }
+                       } else {
+                               // Outside parenthesis, looking for next field:
+                               // Looking for a flow-control construct (only known constructs supported)
+                               if (preg_match('/^case([[:space:]][[:alnum:]\\*._]+)?[[:space:]]when/i', $parseString)) {
+                                       $stack[$pnt]['type'] = 'flow-control';
+                                       $stack[$pnt]['flow-control'] = $this->parseCaseStatement($parseString);
+                                       // Looking for "AS" alias:
+                                       if ($as = $this->nextPart($parseString, '^(AS)[[:space:]]+')) {
+                                               $stack[$pnt]['as'] = $this->nextPart($parseString, '^([[:alnum:]_]+)(,|[[:space:]]+)');
+                                               $stack[$pnt]['as_keyword'] = $as;
+                                       }
+                               } else {
+                                       // Looking for a known function (only known functions supported)
+                                       $func = $this->nextPart($parseString, '^(count|max|min|floor|sum|avg)[[:space:]]*\\(');
+                                       if ($func) {
+                                               // Strip off "("
+                                               $parseString = trim(substr($parseString, 1));
+                                               $stack[$pnt]['type'] = 'function';
+                                               $stack[$pnt]['function'] = $func;
+                                               // increse parenthesis level counter.
+                                               $level++;
+                                       } else {
+                                               $stack[$pnt]['distinct'] = $this->nextPart($parseString, '^(distinct[[:space:]]+)');
+                                               // Otherwise, look for regular fieldname:
+                                               if (($fieldName = $this->nextPart($parseString, '^([[:alnum:]\\*._]+)(,|[[:space:]]+)')) !== '') {
+                                                       $stack[$pnt]['type'] = 'field';
+                                                       // Explode fieldname into field and table:
+                                                       $tableField = explode('.', $fieldName, 2);
+                                                       if (count($tableField) == 2) {
+                                                               $stack[$pnt]['table'] = $tableField[0];
+                                                               $stack[$pnt]['field'] = $tableField[1];
+                                                       } else {
+                                                               $stack[$pnt]['table'] = '';
+                                                               $stack[$pnt]['field'] = $tableField[0];
+                                                       }
+                                               } else {
+                                                       return $this->parseError('No field name found as expected in parseFieldList()', $parseString);
+                                               }
+                                       }
+                               }
+                       }
+                       // After a function or field we look for "AS" alias and a comma to separate to the next field in the list:
+                       if (!$level) {
+                               // Looking for "AS" alias:
+                               if ($as = $this->nextPart($parseString, '^(AS)[[:space:]]+')) {
+                                       $stack[$pnt]['as'] = $this->nextPart($parseString, '^([[:alnum:]_]+)(,|[[:space:]]+)');
+                                       $stack[$pnt]['as_keyword'] = $as;
+                               }
+                               // Looking for "ASC" or "DESC" keywords (for ORDER BY)
+                               if ($sDir = $this->nextPart($parseString, '^(ASC|DESC)([[:space:]]+|,)')) {
+                                       $stack[$pnt]['sortDir'] = $sDir;
+                               }
+                               // Looking for stop-keywords:
+                               if ($stopRegex && ($this->lastStopKeyWord = $this->nextPart($parseString, $stopRegex))) {
+                                       $this->lastStopKeyWord = strtoupper(str_replace(array(' ', TAB, CR, LF), '', $this->lastStopKeyWord));
+                                       return $stack;
+                               }
+                               // Looking for comma (since the stop-keyword did not trigger a return...)
+                               if (strlen($parseString) && !$this->nextPart($parseString, '^(,)')) {
+                                       return $this->parseError('No comma found as expected in parseFieldList()', $parseString);
+                               }
+                               // Increasing pointer:
+                               $pnt++;
+                       }
+                       // Check recursivity brake:
+                       $loopExit++;
+                       if ($loopExit > 500) {
+                               return $this->parseError('More than 500 loops, exiting prematurely in parseFieldList()...', $parseString);
+                       }
+               }
+               // Return result array:
+               return $stack;
+       }
+
+       /**
+        * Parsing a CASE ... WHEN flow-control construct.
+        * The output from this function can be compiled back with ->compileCaseStatement()
+        *
+        * @param string $parseString The string with the CASE ... WHEN construct, eg. "CASE field WHEN 1 THEN 0 ELSE ..." etc. NOTICE: passed by reference!
+        * @return array If successful parsing, returns an array, otherwise an error string.
+        * @see compileCaseConstruct()
+        */
+       protected function parseCaseStatement(&$parseString) {
+               $result = array();
+               $result['type'] = $this->nextPart($parseString, '^(case)[[:space:]]+');
+               if (!preg_match('/^when[[:space:]]+/i', $parseString)) {
+                       $value = $this->getValue($parseString);
+                       if (!(isset($value[1]) || is_numeric($value[0]))) {
+                               $result['case_field'] = $value[0];
+                       } else {
+                               $result['case_value'] = $value;
+                       }
+               }
+               $result['when'] = array();
+               while ($this->nextPart($parseString, '^(when)[[:space:]]')) {
+                       $when = array();
+                       $when['when_value'] = $this->parseWhereClause($parseString, '^(then)[[:space:]]+');
+                       $when['then_value'] = $this->getValue($parseString);
+                       $result['when'][] = $when;
+               }
+               if ($this->nextPart($parseString, '^(else)[[:space:]]+')) {
+                       $result['else'] = $this->getValue($parseString);
+               }
+               if (!$this->nextPart($parseString, '^(end)[[:space:]]+')) {
+                       return $this->parseError('No "end" keyword found as expected in parseCaseStatement()', $parseString);
+               }
+               return $result;
+       }
+
+       /**
+        * Parsing the tablenames in the "FROM [$parseString] WHERE" part of a query into an array.
+        * The success of this parsing determines if that part of the query is supported by TYPO3.
+        *
+        * @param string $parseString List of tables, eg. "pages, tt_content" or "pages A, pages B". NOTICE: passed by reference!
+        * @param string $stopRegex Regular expressing to STOP parsing, eg. '^(WHERE)([[:space:]]*)'
+        * @return array If successful parsing, returns an array, otherwise an error string.
+        * @see compileFromTables()
+        */
+       public function parseFromTables(&$parseString, $stopRegex = '') {
+               // Prepare variables:
+               $parseString = $this->trimSQL($parseString);
+               $this->lastStopKeyWord = '';
+               $this->parse_error = '';
+               // Contains the parsed content
+               $stack = array();
+               // Pointer to positions in $stack
+               $pnt = 0;
+               // Recursivity brake.
+               $loopExit = 0;
+               // $parseString is continously shortend by the process and we keep parsing it till it is zero:
+               while (strlen($parseString)) {
+                       // Looking for the table:
+                       if ($stack[$pnt]['table'] = $this->nextPart($parseString, '^([[:alnum:]_]+)(,|[[:space:]]+)')) {
+                               // Looking for stop-keywords before fetching potential table alias:
+                               if ($stopRegex && ($this->lastStopKeyWord = $this->nextPart($parseString, $stopRegex))) {
+                                       $this->lastStopKeyWord = strtoupper(str_replace(array(' ', TAB, CR, LF), '', $this->lastStopKeyWord));
+                                       return $stack;
+                               }
+                               if (!preg_match('/^(LEFT|RIGHT|JOIN|INNER)[[:space:]]+/i', $parseString)) {
+                                       $stack[$pnt]['as_keyword'] = $this->nextPart($parseString, '^(AS[[:space:]]+)');
+                                       $stack[$pnt]['as'] = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]*');
+                               }
+                       } else {
+                               return $this->parseError('No table name found as expected in parseFromTables()!', $parseString);
+                       }
+                       // Looking for JOIN
+                       $joinCnt = 0;
+                       while ($join = $this->nextPart($parseString, '^(LEFT[[:space:]]+JOIN|LEFT[[:space:]]+OUTER[[:space:]]+JOIN|RIGHT[[:space:]]+JOIN|RIGHT[[:space:]]+OUTER[[:space:]]+JOIN|INNER[[:space:]]+JOIN|JOIN)[[:space:]]+')) {
+                               $stack[$pnt]['JOIN'][$joinCnt]['type'] = $join;
+                               if ($stack[$pnt]['JOIN'][$joinCnt]['withTable'] = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]+', 1)) {
+                                       if (!preg_match('/^ON[[:space:]]+/i', $parseString)) {
+                                               $stack[$pnt]['JOIN'][$joinCnt]['as_keyword'] = $this->nextPart($parseString, '^(AS[[:space:]]+)');
+                                               $stack[$pnt]['JOIN'][$joinCnt]['as'] = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]+');
+                                       }
+                                       if (!$this->nextPart($parseString, '^(ON[[:space:]]+)')) {
+                                               return $this->parseError('No join condition found in parseFromTables()!', $parseString);
+                                       }
+                                       $stack[$pnt]['JOIN'][$joinCnt]['ON'] = array();
+                                       $condition = array('operator' => '');
+                                       $parseCondition = TRUE;
+                                       while ($parseCondition) {
+                                               if (($fieldName = $this->nextPart($parseString, '^([[:alnum:]._]+)[[:space:]]*(<=|>=|<|>|=|!=)')) !== '') {
+                                                       // Parse field name into field and table:
+                                                       $tableField = explode('.', $fieldName, 2);
+                                                       $condition['left'] = array();
+                                                       if (count($tableField) == 2) {
+                                                               $condition['left']['table'] = $tableField[0];
+                                                               $condition['left']['field'] = $tableField[1];
+                                                       } else {
+                                                               $condition['left']['table'] = '';
+                                                               $condition['left']['field'] = $tableField[0];
+                                                       }
+                                               } else {
+                                                       return $this->parseError('No join field found in parseFromTables()!', $parseString);
+                                               }
+                                               // Find "comparator":
+                                               $condition['comparator'] = $this->nextPart($parseString, '^(<=|>=|<|>|=|!=)');
+                                               if (($fieldName = $this->nextPart($parseString, '^([[:alnum:]._]+)')) !== '') {
+                                                       // Parse field name into field and table:
+                                                       $tableField = explode('.', $fieldName, 2);
+                                                       $condition['right'] = array();
+                                                       if (count($tableField) == 2) {
+                                                               $condition['right']['table'] = $tableField[0];
+                                                               $condition['right']['field'] = $tableField[1];
+                                                       } else {
+                                                               $condition['right']['table'] = '';
+                                                               $condition['right']['field'] = $tableField[0];
+                                                       }
+                                               } elseif ($value = $this->getValue($parseString)) {
+                                                       $condition['right']['value'] = $value;
+                                               } else {
+                                                       return $this->parseError('No join field found in parseFromTables()!', $parseString);
+                                               }
+                                               $stack[$pnt]['JOIN'][$joinCnt]['ON'][] = $condition;
+                                               if (($operator = $this->nextPart($parseString, '^(AND|OR)')) !== '') {
+                                                       $condition = array('operator' => $operator);
+                                               } else {
+                                                       $parseCondition = FALSE;
+                                               }
+                                       }
+                                       $joinCnt++;
+                               } else {
+                                       return $this->parseError('No join table found in parseFromTables()!', $parseString);
+                               }
+                       }
+                       // Looking for stop-keywords:
+                       if ($stopRegex && ($this->lastStopKeyWord = $this->nextPart($parseString, $stopRegex))) {
+                               $this->lastStopKeyWord = strtoupper(str_replace(array(' ', TAB, CR, LF), '', $this->lastStopKeyWord));
+                               return $stack;
+                       }
+                       // Looking for comma:
+                       if (strlen($parseString) && !$this->nextPart($parseString, '^(,)')) {
+                               return $this->parseError('No comma found as expected in parseFromTables()', $parseString);
+                       }
+                       // Increasing pointer:
+                       $pnt++;
+                       // Check recursivity brake:
+                       $loopExit++;
+                       if ($loopExit > 500) {
+                               return $this->parseError('More than 500 loops, exiting prematurely in parseFromTables()...', $parseString);
+                       }
+               }
+               // Return result array:
+               return $stack;
+       }
+
+       /**
+        * Parsing the WHERE clause fields in the "WHERE [$parseString] ..." part of a query into a multidimensional array.
+        * The success of this parsing determines if that part of the query is supported by TYPO3.
+        *
+        * @param string $parseString WHERE clause to parse. NOTICE: passed by reference!
+        * @param string $stopRegex Regular expressing to STOP parsing, eg. '^(GROUP BY|ORDER BY|LIMIT)([[:space:]]*)'
+        * @param array $parameterReferences Array holding references to either named (:name) or question mark (?) parameters found
+        * @return mixed If successful parsing, returns an array, otherwise an error string.
+        */
+       public function parseWhereClause(&$parseString, $stopRegex = '', array &$parameterReferences = array()) {
+               // Prepare variables:
+               $parseString = $this->trimSQL($parseString);
+               $this->lastStopKeyWord = '';
+               $this->parse_error = '';
+               // Contains the parsed content
+               $stack = array(0 => array());
+               // Pointer to positions in $stack
+               $pnt = array(0 => 0);
+               // Determines parenthesis level
+               $level = 0;
+               // Recursivity brake.
+               $loopExit = 0;
+               // $parseString is continuously shortened by the process and we keep parsing it till it is zero:
+               while (strlen($parseString)) {
+                       // Look for next parenthesis level:
+                       $newLevel = $this->nextPart($parseString, '^([(])');
+                       // If new level is started, manage stack/pointers:
+                       if ($newLevel == '(') {
+                               // Increase level
+                               $level++;
+                               // Reset pointer for this level
+                               $pnt[$level] = 0;
+                               // Reset stack for this level
+                               $stack[$level] = array();
+                       } else {
+                               // If no new level is started, just parse the current level:
+                               // Find "modifier", eg. "NOT or !"
+                               $stack[$level][$pnt[$level]]['modifier'] = trim($this->nextPart($parseString, '^(!|NOT[[:space:]]+)'));
+                               // See if condition is EXISTS with a subquery
+                               if (preg_match('/^EXISTS[[:space:]]*[(]/i', $parseString)) {
+                                       $stack[$level][$pnt[$level]]['func']['type'] = $this->nextPart($parseString, '^(EXISTS)[[:space:]]*');
+                                       // Strip off "("
+                                       $parseString = trim(substr($parseString, 1));
+                                       $stack[$level][$pnt[$level]]['func']['subquery'] = $this->parseSELECT($parseString, $parameterReferences);
+                                       // Seek to new position in parseString after parsing of the subquery
+                                       $parseString = $stack[$level][$pnt[$level]]['func']['subquery']['parseString'];
+                                       unset($stack[$level][$pnt[$level]]['func']['subquery']['parseString']);
+                                       if (!$this->nextPart($parseString, '^([)])')) {
+                                               return 'No ) parenthesis at end of subquery';
+                                       }
+                               } else {
+                                       // See if LOCATE function is found
+                                       if (preg_match('/^LOCATE[[:space:]]*[(]/i', $parseString)) {
+                                               $stack[$level][$pnt[$level]]['func']['type'] = $this->nextPart($parseString, '^(LOCATE)[[:space:]]*');
+                                               // Strip off "("
+                                               $parseString = trim(substr($parseString, 1));
+                                               $stack[$level][$pnt[$level]]['func']['substr'] = $this->getValue($parseString);
+                                               if (!$this->nextPart($parseString, '^(,)')) {
+                                                       return $this->parseError('No comma found as expected in parseWhereClause()', $parseString);
+                                               }
+                                               if ($fieldName = $this->nextPart($parseString, '^([[:alnum:]\\*._]+)[[:space:]]*')) {
+                                                       // Parse field name into field and table:
+                                                       $tableField = explode('.', $fieldName, 2);
+                                                       if (count($tableField) == 2) {
+                                                               $stack[$level][$pnt[$level]]['func']['table'] = $tableField[0];
+                                                               $stack[$level][$pnt[$level]]['func']['field'] = $tableField[1];
+                                                       } else {
+                                                               $stack[$level][$pnt[$level]]['func']['table'] = '';
+                                                               $stack[$level][$pnt[$level]]['func']['field'] = $tableField[0];
+                                                       }
+                                               } else {
+                                                       return $this->parseError('No field name found as expected in parseWhereClause()', $parseString);
+                                               }
+                                               if ($this->nextPart($parseString, '^(,)')) {
+                                                       $stack[$level][$pnt[$level]]['func']['pos'] = $this->getValue($parseString);
+                                               }
+                                               if (!$this->nextPart($parseString, '^([)])')) {
+                                                       return $this->parseError('No ) parenthesis at end of function', $parseString);
+                                               }
+                                       } elseif (preg_match('/^IFNULL[[:space:]]*[(]/i', $parseString)) {
+                                               $stack[$level][$pnt[$level]]['func']['type'] = $this->nextPart($parseString, '^(IFNULL)[[:space:]]*');
+                                               $parseString = trim(substr($parseString, 1));
+                                               // Strip off "("
+                                               if ($fieldName = $this->nextPart($parseString, '^([[:alnum:]\\*._]+)[[:space:]]*')) {
+                                                       // Parse field name into field and table:
+                                                       $tableField = explode('.', $fieldName, 2);
+                                                       if (count($tableField) == 2) {
+                                                               $stack[$level][$pnt[$level]]['func']['table'] = $tableField[0];
+                                                               $stack[$level][$pnt[$level]]['func']['field'] = $tableField[1];
+                                                       } else {
+                                                               $stack[$level][$pnt[$level]]['func']['table'] = '';
+                                                               $stack[$level][$pnt[$level]]['func']['field'] = $tableField[0];
+                                                       }
+                                               } else {
+                                                       return $this->parseError('No field name found as expected in parseWhereClause()', $parseString);
+                                               }
+                                               if ($this->nextPart($parseString, '^(,)')) {
+                                                       $stack[$level][$pnt[$level]]['func']['default'] = $this->getValue($parseString);
+                                               }
+                                               if (!$this->nextPart($parseString, '^([)])')) {
+                                                       return $this->parseError('No ) parenthesis at end of function', $parseString);
+                                               }
+                                       } elseif (preg_match('/^CAST[[:space:]]*[(]/i', $parseString)) {
+                                               $stack[$level][$pnt[$level]]['func']['type'] = $this->nextPart($parseString, '^(CAST)[[:space:]]*');
+                                               $parseString = trim(substr($parseString, 1));
+                                               // Strip off "("
+                                               if ($fieldName = $this->nextPart($parseString, '^([[:alnum:]\\*._]+)[[:space:]]*')) {
+                                                       // Parse field name into field and table:
+                                                       $tableField = explode('.', $fieldName, 2);
+                                                       if (count($tableField) === 2) {
+                                                               $stack[$level][$pnt[$level]]['func']['table'] = $tableField[0];
+                                                               $stack[$level][$pnt[$level]]['func']['field'] = $tableField[1];
+                                                       } else {
+                                                               $stack[$level][$pnt[$level]]['func']['table'] = '';
+                                                               $stack[$level][$pnt[$level]]['func']['field'] = $tableField[0];
+                                                       }
+                                               } else {
+                                                       return $this->parseError('No field name found as expected in parseWhereClause()', $parseString);
+                                               }
+                                               if ($this->nextPart($parseString, '^([[:space:]]*AS[[:space:]]*)')) {
+                                                       $stack[$level][$pnt[$level]]['func']['datatype'] = $this->getValue($parseString);
+                                               }
+                                               if (!$this->nextPart($parseString, '^([)])')) {
+                                                       return $this->parseError('No ) parenthesis at end of function', $parseString);
+                                               }
+                                       } elseif (preg_match('/^FIND_IN_SET[[:space:]]*[(]/i', $parseString)) {
+                                               $stack[$level][$pnt[$level]]['func']['type'] = $this->nextPart($parseString, '^(FIND_IN_SET)[[:space:]]*');
+                                               // Strip off "("
+                                               $parseString = trim(substr($parseString, 1));
+                                               if ($str = $this->getValue($parseString)) {
+                                                       $stack[$level][$pnt[$level]]['func']['str'] = $str;
+                                                       if ($fieldName = $this->nextPart($parseString, '^,[[:space:]]*([[:alnum:]._]+)[[:space:]]*', TRUE)) {
+                                                               // Parse field name into field and table:
+                                                               $tableField = explode('.', $fieldName, 2);
+                                                               if (count($tableField) == 2) {
+                                                                       $stack[$level][$pnt[$level]]['func']['table'] = $tableField[0];
+                                                                       $stack[$level][$pnt[$level]]['func']['field'] = $tableField[1];
+                                                               } else {
+                                                                       $stack[$level][$pnt[$level]]['func']['table'] = '';
+                                                                       $stack[$level][$pnt[$level]]['func']['field'] = $tableField[0];
+                                                               }
+                                                       } else {
+                                                               return $this->parseError('No field name found as expected in parseWhereClause()', $parseString);
+                                                       }
+                                                       if (!$this->nextPart($parseString, '^([)])')) {
+                                                               return $this->parseError('No ) parenthesis at end of function', $parseString);
+                                                       }
+                                               } else {
+                                                       return $this->parseError('No item to look for found as expected in parseWhereClause()', $parseString);
+                                               }
+                                       } else {
+                                               // Support calculated value only for:
+                                               // - "&" (boolean AND)
+                                               // - "+" (addition)
+                                               // - "-" (substraction)
+                                               // - "*" (multiplication)
+                                               // - "/" (division)
+                                               // - "%" (modulo)
+                                               $calcOperators = '&|\\+|-|\\*|\\/|%';
+                                               // Fieldname:
+                                               if (($fieldName = $this->nextPart($parseString, '^([[:alnum:]._]+)([[:space:]]+|' . $calcOperators . '|<=|>=|<|>|=|!=|IS)')) !== '') {
+                                                       // Parse field name into field and table:
+                                                       $tableField = explode('.', $fieldName, 2);
+                                                       if (count($tableField) == 2) {
+                                                               $stack[$level][$pnt[$level]]['table'] = $tableField[0];
+                                                               $stack[$level][$pnt[$level]]['field'] = $tableField[1];
+                                                       } else {
+                                                               $stack[$level][$pnt[$level]]['table'] = '';
+                                                               $stack[$level][$pnt[$level]]['field'] = $tableField[0];
+                                                       }
+                                               } else {
+                                                       return $this->parseError('No field name found as expected in parseWhereClause()', $parseString);
+                                               }
+                                               // See if the value is calculated:
+                                               $stack[$level][$pnt[$level]]['calc'] = $this->nextPart($parseString, '^(' . $calcOperators . ')');
+                                               if (strlen($stack[$level][$pnt[$level]]['calc'])) {
+                                                       // Finding value for calculation:
+                                                       $calc_value = $this->getValue($parseString);
+                                                       $stack[$level][$pnt[$level]]['calc_value'] = $calc_value;
+                                                       if (count($calc_value) == 1 && is_string($calc_value[0])) {
+                                                               // Value is a field, store it to allow DBAL to post-process it (quoting, remapping)
+                                                               $tableField = explode('.', $calc_value[0], 2);
+                                                               if (count($tableField) == 2) {
+                                                                       $stack[$level][$pnt[$level]]['calc_table'] = $tableField[0];
+                                                                       $stack[$level][$pnt[$level]]['calc_field'] = $tableField[1];
+                                                               } else {
+                                                                       $stack[$level][$pnt[$level]]['calc_table'] = '';
+                                                                       $stack[$level][$pnt[$level]]['calc_field'] = $tableField[0];
+                                                               }
+                                                       }
+                                               }
+                                       }
+                                       // Find "comparator":
+                                       $comparatorPatterns = array(
+                                               '<=',
+                                               '>=',
+                                               '<>',
+                                               '<',
+                                               '>',
+                                               '=',
+                                               '!=',
+                                               'NOT[[:space:]]+IN',
+                                               'IN',
+                                               'NOT[[:space:]]+LIKE[[:space:]]+BINARY',
+                                               'LIKE[[:space:]]+BINARY',
+                                               'NOT[[:space:]]+LIKE',
+                                               'LIKE',
+                                               'IS[[:space:]]+NOT',
+                                               'IS',
+                                               'BETWEEN',
+                                               'NOT[[:space]]+BETWEEN'
+                                       );
+                                       $stack[$level][$pnt[$level]]['comparator'] = $this->nextPart($parseString, '^(' . implode('|', $comparatorPatterns) . ')');
+                                       if (strlen($stack[$level][$pnt[$level]]['comparator'])) {
+                                               if (preg_match('/^CONCAT[[:space:]]*\\(/', $parseString)) {
+                                                       $this->nextPart($parseString, '^(CONCAT[[:space:]]?[(])');
+                                                       $values = array(
+                                                               'operator' => 'CONCAT',
+                                                               'args' => array()
+                                                       );
+                                                       $cnt = 0;
+                                                       while ($fieldName = $this->nextPart($parseString, '^([[:alnum:]._]+)')) {
+                                                               // Parse field name into field and table:
+                                                               $tableField = explode('.', $fieldName, 2);
+                                                               if (count($tableField) == 2) {
+                                                                       $values['args'][$cnt]['table'] = $tableField[0];
+                                                                       $values['args'][$cnt]['field'] = $tableField[1];
+                                                               } else {
+                                                                       $values['args'][$cnt]['table'] = '';
+                                                                       $values['args'][$cnt]['field'] = $tableField[0];
+                                                               }
+                                                               // Looking for comma:
+                                                               $this->nextPart($parseString, '^(,)');
+                                                               $cnt++;
+                                                       }
+                                                       // Look for ending parenthesis:
+                                                       $this->nextPart($parseString, '([)])');
+                                                       $stack[$level][$pnt[$level]]['value'] = $values;
+                                               } else {
+                                                       if (\TYPO3\CMS\Core\Utility\GeneralUtility::inList('IN,NOT IN', $stack[$level][$pnt[$level]]['comparator']) && preg_match('/^[(][[:space:]]*SELECT[[:space:]]+/', $parseString)) {
+                                                               $this->nextPart($parseString, '^([(])');
+                                                               $stack[$level][$pnt[$level]]['subquery'] = $this->parseSELECT($parseString, $parameterReferences);
+                                                               // Seek to new position in parseString after parsing of the subquery
+                                                               $parseString = $stack[$level][$pnt[$level]]['subquery']['parseString'];
+                                                               unset($stack[$level][$pnt[$level]]['subquery']['parseString']);
+                                                               if (!$this->nextPart($parseString, '^([)])')) {
+                                                                       return 'No ) parenthesis at end of subquery';
+                                                               }
+                                                       } else {
+                                                               if (\TYPO3\CMS\Core\Utility\GeneralUtility::inList('BETWEEN,NOT BETWEEN', $stack[$level][$pnt[$level]]['comparator'])) {
+                                                                       $stack[$level][$pnt[$level]]['values'] = array();
+                                                                       $stack[$level][$pnt[$level]]['values'][0] = $this->getValue($parseString);
+                                                                       if (!$this->nextPart($parseString, '^(AND)')) {
+                                                                               return $this->parseError('No AND operator found as expected in parseWhereClause()', $parseString);
+                                                                       }
+                                                                       $stack[$level][$pnt[$level]]['values'][1] = $this->getValue($parseString);
+                                                               } else {
+                                                                       // Finding value for comparator:
+                                                                       $stack[$level][$pnt[$level]]['value'] = &$this->getValueOrParameter($parseString, $stack[$level][$pnt[$level]]['comparator'], '', $parameterReferences);
+                                                                       if ($this->parse_error) {
+                                                                               return $this->parse_error;
+                                                                       }
+                                                               }
+                                                       }
+                                               }
+                                       }
+                               }
+                               // Finished, increase pointer:
+                               $pnt[$level]++;
+                               // Checking if we are back to level 0 and we should still decrease level,
+                               // meaning we were probably parsing as subquery and should return here:
+                               if ($level === 0 && preg_match('/^[)]/', $parseString)) {
+                                       // Return the stacks lowest level:
+                                       return $stack[0];
+                               }
+                               // Checking if we are back to level 0 and we should still decrease level,
+                               // meaning we were probably parsing a subquery and should return here:
+                               if ($level === 0 && preg_match('/^[)]/', $parseString)) {
+                                       // Return the stacks lowest level:
+                                       return $stack[0];
+                               }
+                               // Checking if the current level is ended, in that case do stack management:
+                               while ($this->nextPart($parseString, '^([)])')) {
+                                       $level--;
+                                       // Decrease level:
+                                       // Copy stack
+                                       $stack[$level][$pnt[$level]]['sub'] = $stack[$level + 1];
+                                       // Increase pointer of the new level
+                                       $pnt[$level]++;
+                                       // Make recursivity check:
+                                       $loopExit++;
+                                       if ($loopExit > 500) {
+                                               return $this->parseError('More than 500 loops (in search for exit parenthesis), exiting prematurely in parseWhereClause()...', $parseString);
+                                       }
+                               }
+                               // Detecting the operator for the next level:
+                               $op = $this->nextPart($parseString, '^(AND[[:space:]]+NOT|&&[[:space:]]+NOT|OR[[:space:]]+NOT|OR[[:space:]]+NOT|\\|\\|[[:space:]]+NOT|AND|&&|OR|\\|\\|)(\\(|[[:space:]]+)');
+                               if ($op) {
+                                       // Normalize boolean operator
+                                       $op = str_replace(array('&&', '||'), array('AND', 'OR'), $op);
+                                       $stack[$level][$pnt[$level]]['operator'] = $op;
+                               } elseif (strlen($parseString)) {
+                                       // Looking for stop-keywords:
+                                       if ($stopRegex && ($this->lastStopKeyWord = $this->nextPart($parseString, $stopRegex))) {
+                                               $this->lastStopKeyWord = strtoupper(str_replace(array(' ', TAB, CR, LF), '', $this->lastStopKeyWord));
+                                               return $stack[0];
+                                       } else {
+                                               return $this->parseError('No operator, but parsing not finished in parseWhereClause().', $parseString);
+                                       }
+                               }
+                       }
+                       // Make recursivity check:
+                       $loopExit++;
+                       if ($loopExit > 500) {
+                               return $this->parseError('More than 500 loops, exiting prematurely in parseWhereClause()...', $parseString);
+                       }
+               }
+               // Return the stacks lowest level:
+               return $stack[0];
+       }
+
+       /**
+        * Parsing the WHERE clause fields in the "WHERE [$parseString] ..." part of a query into a multidimensional array.
+        * The success of this parsing determines if that part of the query is supported by TYPO3.
+        *
+        * @param string $parseString WHERE clause to parse. NOTICE: passed by reference!
+        * @param string $stopRegex Regular expressing to STOP parsing, eg. '^(GROUP BY|ORDER BY|LIMIT)([[:space:]]*)'
+        * @return mixed If successful parsing, returns an array, otherwise an error string.
+        */
+       public function parseFieldDef(&$parseString, $stopRegex = '') {
+               // Prepare variables:
+               $parseString = $this->trimSQL($parseString);
+               $this->lastStopKeyWord = '';
+               $this->parse_error = '';
+               $result = array();
+               // Field type:
+               if ($result['fieldType'] = $this->nextPart($parseString, '^(int|smallint|tinyint|mediumint|bigint|double|numeric|decimal|float|varchar|char|text|tinytext|mediumtext|longtext|blob|tinyblob|mediumblob|longblob)([[:space:],]+|\\()')) {
+                       // Looking for value:
+                       if ($parseString[0] === '(') {
+                               $parseString = substr($parseString, 1);
+                               if ($result['value'] = $this->nextPart($parseString, '^([^)]*)')) {
+                                       $parseString = ltrim(substr($parseString, 1));
+                               } else {
+                                       return $this->parseError('No end-parenthesis for value found in parseFieldDef()!', $parseString);
+                               }
+                       }
+                       // Looking for keywords
+                       while ($keyword = $this->nextPart($parseString, '^(DEFAULT|NOT[[:space:]]+NULL|AUTO_INCREMENT|UNSIGNED)([[:space:]]+|,|\\))')) {
+                               $keywordCmp = strtoupper(str_replace(array(' ', TAB, CR, LF), '', $keyword));
+                               $result['featureIndex'][$keywordCmp]['keyword'] = $keyword;
+                               switch ($keywordCmp) {
+                                       case 'DEFAULT':
+                                               $result['featureIndex'][$keywordCmp]['value'] = $this->getValue($parseString);
+                                               break;
+                               }
+                       }
+               } else {
+                       return $this->parseError('Field type unknown in parseFieldDef()!', $parseString);
+               }
+               return $result;
+       }
+
+       /************************************
+        *
+        * Parsing: Helper functions
+        *
+        ************************************/
+       /**
+        * Strips off a part of the parseString and returns the matching part.
+        * Helper function for the parsing methods.
+        *
+        * @param string $parseString Parse string; if $regex finds anything the value of the first () level will be stripped of the string in the beginning. Further $parseString is left-trimmed (on success). Notice; parsestring is passed by reference.
+        * @param string $regex Regex to find a matching part in the beginning of the string. Rules: You MUST start the regex with "^" (finding stuff in the beginning of string) and the result of the first parenthesis is what will be returned to you (and stripped of the string). Eg. '^(AND|OR|&&)[[:space:]]+' will return AND, OR or && if found and having one of more whitespaces after it, plus shorten $parseString with that match and any space after (by ltrim())
+        * @param boolean $trimAll If set the full match of the regex is stripped of the beginning of the string!
+        * @return string The value of the first parenthesis level of the REGEX.
+        */
+       protected function nextPart(&$parseString, $regex, $trimAll = FALSE) {
+               $reg = array();
+               // Adding space char because [[:space:]]+ is often a requirement in regex's
+               if (preg_match('/' . $regex . '/i', $parseString . ' ', $reg)) {
+                       $parseString = ltrim(substr($parseString, strlen($reg[$trimAll ? 0 : 1])));
+                       return $reg[1];
+               }
+               // No match found
+               return '';
+       }
+
+       /**
+        * Finds value or either named (:name) or question mark (?) parameter markers at the beginning
+        * of $parseString, returns result and strips it of parseString.
+        * This method returns a pointer to the parameter or value that was found. In case of a parameter
+        * the pointer is a reference to the corresponding item in array $parameterReferences.
+        *
+        * @param string $parseString The parseString
+        * @param string $comparator The comparator used before.
+        * @param string $mode The mode, e.g., "INDEX
+        * @param mixed The value (string/integer) or parameter (:name/?). Otherwise an array with error message in first key (0)
+        */
+       protected function &getValueOrParameter(&$parseString, $comparator = '', $mode = '', array &$parameterReferences = array()) {
+               $parameter = $this->nextPart($parseString, '^(\\:[[:alnum:]_]+|\\?)');
+               if ($parameter === '?') {
+                       if (!isset($parameterReferences['?'])) {
+                               $parameterReferences['?'] = array();
+                       }
+                       $value = array('?');
+                       $parameterReferences['?'][] = &$value;
+               } elseif ($parameter !== '') {
+                       // named parameter
+                       if (isset($parameterReferences[$parameter])) {
+                               // Use the same reference as last time we encountered this parameter
+                               $value = &$parameterReferences[$parameter];
+                       } else {
+                               $value = array($parameter);
+                               $parameterReferences[$parameter] = &$value;
+                       }
+               } else {
+                       $value = $this->getValue($parseString, $comparator, $mode);
+               }
+               return $value;
+       }
+
+       /**
+        * Finds value in beginning of $parseString, returns result and strips it of parseString
+        *
+        * @param string $parseString The parseString, eg. "(0,1,2,3) ..." or "('asdf','qwer') ..." or "1234 ..." or "'My string value here' ...
+        * @param string $comparator The comparator used before. If "NOT IN" or "IN" then the value is expected to be a list of values. Otherwise just an integer (un-quoted) or string (quoted)
+        * @param string $mode The mode, eg. "INDEX
+        * @return mixed The value (string/integer). Otherwise an array with error message in first key (0)
+        */
+       protected function getValue(&$parseString, $comparator = '', $mode = '') {
+               $value = '';
+               if (\TYPO3\CMS\Core\Utility\GeneralUtility::inList('NOTIN,IN,_LIST', strtoupper(str_replace(array(' ', LF, CR, TAB), '', $comparator)))) {
+                       // List of values:
+                       if ($this->nextPart($parseString, '^([(])')) {
+                               $listValues = array();
+                               $comma = ',';
+                               while ($comma == ',') {
+                                       $listValues[] = $this->getValue($parseString);
+                                       if ($mode === 'INDEX') {
+                                               // Remove any length restriction on INDEX definition
+                                               $this->nextPart($parseString, '^([(]\\d+[)])');
+                                       }
+                                       $comma = $this->nextPart($parseString, '^([,])');
+                               }
+                               $out = $this->nextPart($parseString, '^([)])');
+                               if ($out) {
+                                       if ($comparator == '_LIST') {
+                                               $kVals = array();
+                                               foreach ($listValues as $vArr) {
+                                                       $kVals[] = $vArr[0];
+                                               }
+                                               return $kVals;
+                                       } else {
+                                               return $listValues;
+                                       }
+                               } else {
+                                       return array($this->parseError('No ) parenthesis in list', $parseString));
+                               }
+                       } else {
+                               return array($this->parseError('No ( parenthesis starting the list', $parseString));
+                       }
+               } else {
+                       // Just plain string value, in quotes or not:
+                       // Quote?
+                       $firstChar = $parseString[0];
+                       switch ($firstChar) {
+                               case '"':
+                                       $value = array($this->getValueInQuotes($parseString, '"'), '"');
+                                       break;
+                               case '\'':
+                                       $value = array($this->getValueInQuotes($parseString, '\''), '\'');
+                                       break;
+                               default:
+                                       $reg = array();
+                                       if (preg_match('/^([[:alnum:]._-]+)/i', $parseString, $reg)) {
+                                               $parseString = ltrim(substr($parseString, strlen($reg[0])));
+                                               $value = array($reg[1]);
+                                       }
+                       }
+               }
+               return $value;
+       }
+
+       /**
+        * Get value in quotes from $parseString.
+        * NOTICE: If a query being parsed was prepared for another database than MySQL this function should probably be changed
+        *
+        * @param string $parseString String from which to find value in quotes. Notice that $parseString is passed by reference and is shortend by the output of this function.
+        * @param string $quote The quote used; input either " or '
+        * @return string The value, passed through stripslashes() !
+        */
+       protected function getValueInQuotes(&$parseString, $quote) {
+               $parts = explode($quote, substr($parseString, 1));
+               $buffer = '';
+               foreach ($parts as $k => $v) {
+                       $buffer .= $v;
+                       $reg = array();
+                       preg_match('/\\\\$/', $v, $reg);
+                       if ($reg and strlen($reg[0]) % 2) {
+                               $buffer .= $quote;
+                       } else {
+                               $parseString = ltrim(substr($parseString, strlen($buffer) + 2));
+                               return $this->parseStripslashes($buffer);
+                       }
+               }
+       }
+
+       /**
+        * Strip slashes function used for parsing
+        * NOTICE: If a query being parsed was prepared for another database than MySQL this function should probably be changed
+        *
+        * @param string $str Input string
+        * @return string Output string
+        */
+       protected function parseStripslashes($str) {
+               $search = array('\\\\', '\\\'', '\\"', '\0', '\n', '\r', '\Z');
+               $replace = array('\\', '\'', '"', "\x00", "\x0a", "\x0d", "\x1a");
+
+               return str_replace($search, $replace, $str);
+       }
+
+       /**
+        * Add slashes function used for compiling queries
+        * NOTICE: If a query being parsed was prepared for another database than MySQL this function should probably be changed
+        *
+        * @param string $str Input string
+        * @return string Output string
+        */
+       protected function compileAddslashes($str) {
+               $search = array('\\', '\'', '"', "\x00", "\x0a", "\x0d", "\x1a");
+               $replace = array('\\\\', '\\\'', '\\"', '\0', '\n', '\r', '\Z');
+
+               return str_replace($search, $replace, $str);
+       }
+
+       /**
+        * Setting the internal error message value, $this->parse_error and returns that value.
+        *
+        * @param string $msg Input error message
+        * @param string $restQuery Remaining query to parse.
+        * @return string Error message.
+        */
+       protected function parseError($msg, $restQuery) {
+               $this->parse_error = 'SQL engine parse ERROR: ' . $msg . ': near "' . substr($restQuery, 0, 50) . '"';
+               return $this->parse_error;
+       }
+
+       /**
+        * Trimming SQL as preparation for parsing.
+        * ";" in the end is stripped off.
+        * White space is trimmed away around the value
+        * A single space-char is added in the end
+        *
+        * @param string $str Input string
+        * @return string Output string
+        */
+       protected function trimSQL($str) {
+               return rtrim(rtrim(trim($str), ';')) . ' ';
+       }
+
+       /*************************
+        *
+        * Compiling queries
+        *
+        *************************/
+       /**
+        * Compiles an SQL query from components
+        *
+        * @param array $components Array of SQL query components
+        * @return string SQL query
+        * @see parseSQL()
+        */
+       public function compileSQL($components) {
+               switch ($components['type']) {
+                       case 'SELECT':
+                               $query = $this->compileSELECT($components);
+                               break;
+                       case 'UPDATE':
+                               $query = $this->compileUPDATE($components);
+                               break;
+                       case 'INSERT':
+                               $query = $this->compileINSERT($components);
+                               break;
+                       case 'DELETE':
+                               $query = $this->compileDELETE($components);
+                               break;
+                       case 'EXPLAIN':
+                               $query = 'EXPLAIN ' . $this->compileSELECT($components);
+                               break;
+                       case 'DROPTABLE':
+                               $query = 'DROP TABLE' . ($components['ifExists'] ? ' IF EXISTS' : '') . ' ' . $components['TABLE'];
+                               break;
+                       case 'CREATETABLE':
+                               $query = $this->compileCREATETABLE($components);
+                               break;
+                       case 'ALTERTABLE':
+                               $query = $this->compileALTERTABLE($components);
+                               break;
+                       case 'TRUNCATETABLE':
+                               $query = $this->compileTRUNCATETABLE($components);
+                               break;
+               }
+               return $query;
+       }
+
+       /**
+        * Compiles a SELECT statement from components array
+        *
+        * @param array $components Array of SQL query components
+        * @return string SQL SELECT query
+        * @see parseSELECT()
+        */
+       protected function compileSELECT($components) {
+               // Initialize:
+               $where = $this->compileWhereClause($components['WHERE']);
+               $groupBy = $this->compileFieldList($components['GROUPBY']);
+               $orderBy = $this->compileFieldList($components['ORDERBY']);
+               $limit = $components['LIMIT'];
+               // Make query:
+               $query = 'SELECT ' . ($components['STRAIGHT_JOIN'] ?: '') . ' ' .
+                               $this->compileFieldList($components['SELECT']) .
+                               ' FROM ' . $this->compileFromTables($components['FROM']) . (strlen($where) ?
+                               ' WHERE ' . $where : '') . (strlen($groupBy) ?
+                               ' GROUP BY ' . $groupBy : '') . (strlen($orderBy) ?
+                               ' ORDER BY ' . $orderBy : '') . (strlen($limit) ?
+                               ' LIMIT ' . $limit : '');
+               return $query;
+       }
+
+       /**
+        * Compiles an UPDATE statement from components array
+        *
+        * @param array $components Array of SQL query components
+        * @return string SQL UPDATE query
+        * @see parseUPDATE()
+        */
+       protected function compileUPDATE($components) {
+               // Where clause:
+               $where = $this->compileWhereClause($components['WHERE']);
+               // Fields
+               $fields = array();
+               foreach ($components['FIELDS'] as $fN => $fV) {
+                       $fields[] = $fN . '=' . $fV[1] . $this->compileAddslashes($fV[0]) . $fV[1];
+               }
+               // Make query:
+               $query = 'UPDATE ' . $components['TABLE'] . ' SET ' . implode(',', $fields) .
+                       (strlen($where) ? ' WHERE ' . $where : '');
+
+               return $query;
+       }
+
+       /**
+        * Compiles an INSERT statement from components array
+        *
+        * @param array $components Array of SQL query components
+        * @return string SQL INSERT query
+        * @see parseINSERT()
+        */
+       protected function compileINSERT($components) {
+               $values = array();
+               if (isset($components['VALUES_ONLY']) && is_array($components['VALUES_ONLY'])) {
+                       $valuesComponents = $components['EXTENDED'] === '1' ? $components['VALUES_ONLY'] : array($components['VALUES_ONLY']);
+                       $tableFields = array();
+               } else {
+                       $valuesComponents = $components['EXTENDED'] === '1' ? $components['FIELDS'] : array($components['FIELDS']);
+                       $tableFields = array_keys($valuesComponents[0]);
+               }
+               foreach ($valuesComponents as $valuesComponent) {
+                       $fields = array();
+                       foreach ($valuesComponent as $fV) {
+                               $fields[] = $fV[1] . $this->compileAddslashes($fV[0]) . $fV[1];
+                       }
+                       $values[] = '(' . implode(',', $fields) . ')';
+               }
+               // Make query:
+               $query = 'INSERT INTO ' . $components['TABLE'];
+               if (count($tableFields)) {
+                       $query .= ' (' . implode(',', $tableFields) . ')';
+               }
+               $query .= ' VALUES ' . implode(',', $values);
+
+               return $query;
+       }
+
+       /**
+        * Compiles an DELETE statement from components array
+        *
+        * @param array $components Array of SQL query components
+        * @return string SQL DELETE query
+        * @see parseDELETE()
+        */
+       protected function compileDELETE($components) {
+               // Where clause:
+               $where = $this->compileWhereClause($components['WHERE']);
+               // Make query:
+               $query = 'DELETE FROM ' . $components['TABLE'] . (strlen($where) ? ' WHERE ' . $where : '');
+
+               return $query;
+       }
+
+       /**
+        * Compiles a CREATE TABLE statement from components array
+        *
+        * @param array $components Array of SQL query components
+        * @return string SQL CREATE TABLE query
+        * @see parseCREATETABLE()
+        */
+       protected function compileCREATETABLE($components) {
+               // Create fields and keys:
+               $fieldsKeys = array();
+               foreach ($components['FIELDS'] as $fN => $fCfg) {
+                       $fieldsKeys[] = $fN . ' ' . $this->compileFieldCfg($fCfg['definition']);
+               }
+               foreach ($components['KEYS'] as $kN => $kCfg) {
+                       if ($kN === 'PRIMARYKEY') {
+                               $fieldsKeys[] = 'PRIMARY KEY (' . implode(',', $kCfg) . ')';
+                       } elseif ($kN === 'UNIQUE') {
+                               $key = key($kCfg);
+                               $fields = current($kCfg);
+                               $fieldsKeys[] = 'UNIQUE KEY ' . $key . ' (' . implode(',', $fields) . ')';
+                       } else {
+                               $fieldsKeys[] = 'KEY ' . $kN . ' (' . implode(',', $kCfg) . ')';
+                       }
+               }
+               // Make query:
+               $query = 'CREATE TABLE ' . $components['TABLE'] . ' (' .
+                       implode(',', $fieldsKeys) . ')' .
+                       ($components['engine'] ? ' ENGINE=' . $components['engine'] : '');
+
+               return $query;
+       }
+
+       /**
+        * Compiles an ALTER TABLE statement from components array
+        *
+        * @param array $components Array of SQL query components
+        * @return string SQL ALTER TABLE query
+        * @see parseALTERTABLE()
+        */
+       protected function compileALTERTABLE($components) {
+               // Make query:
+               $query = 'ALTER TABLE ' . $components['TABLE'] . ' ' . $components['action'] . ' ' . ($components['FIELD'] ?: $components['KEY']);
+               // Based on action, add the final part:
+               switch (strtoupper(str_replace(array(' ', TAB, CR, LF), '', $components['action']))) {
+                       case 'ADD':
+                               $query .= ' ' . $this->compileFieldCfg($components['definition']);
+                               break;
+                       case 'CHANGE':
+                               $query .= ' ' . $components['newField'] . ' ' . $this->compileFieldCfg($components['definition']);
+                               break;
+                       case 'DROP':
+
+                       case 'DROPKEY':
+                               break;
+                       case 'ADDKEY':
+
+                       case 'ADDPRIMARYKEY':
+
+                       case 'ADDUNIQUE':
+                               $query .= ' (' . implode(',', $components['fields']) . ')';
+                               break;
+                       case 'DEFAULTCHARACTERSET':
+                               $query .= $components['charset'];
+                               break;
+                       case 'ENGINE':
+                               $query .= '= ' . $components['engine'];
+                               break;
+               }
+               // Return query
+               return $query;
+       }
+
+       /**
+        * Compiles a TRUNCATE TABLE statement from components array
+        *
+        * @param array $components Array of SQL query components
+        * @return string SQL TRUNCATE TABLE query
+        * @see parseTRUNCATETABLE()
+        */
+       protected function compileTRUNCATETABLE(array $components) {
+               // Make query:
+               $query = 'TRUNCATE TABLE ' . $components['TABLE'];
+               // Return query
+               return $query;
+       }
+
+       /**************************************
+        *
+        * Compiling queries, helper functions for parts of queries
+        *
+        **************************************/
+       /**
+        * Compiles a "SELECT [output] FROM..:" field list based on input array (made with ->parseFieldList())
+        * Can also compile field lists for ORDER BY and GROUP BY.
+        *
+        * @param array $selectFields Array of select fields, (made with ->parseFieldList())
+        * @param boolean $compileComments Whether comments should be compiled
+        * @return string Select field string
+        * @see parseFieldList()
+        */
+       public function compileFieldList($selectFields, $compileComments = TRUE) {
+               // Prepare buffer variable:
+               $fields = '';
+               // Traverse the selectFields if any:
+               if (is_array($selectFields)) {
+                       $outputParts = array();
+                       foreach ($selectFields as $k => $v) {
+                               // Detecting type:
+                               switch ($v['type']) {
+                                       case 'function':
+                                               $outputParts[$k] = $v['function'] . '(' . $v['func_content'] . ')';
+                                               break;
+                                       case 'flow-control':
+                                               if ($v['flow-control']['type'] === 'CASE') {
+                                                       $outputParts[$k] = $this->compileCaseStatement($v['flow-control']);
+                                               }
+                                               break;
+                                       case 'field':
+                                               $outputParts[$k] = ($v['distinct'] ? $v['distinct'] : '') . ($v['table'] ? $v['table'] . '.' : '') . $v['field'];
+                                               break;
+                               }
+                               // Alias:
+                               if ($v['as']) {
+                                       $outputParts[$k] .= ' ' . $v['as_keyword'] . ' ' . $v['as'];
+                               }
+                               // Specifically for ORDER BY and GROUP BY field lists:
+                               if ($v['sortDir']) {
+                                       $outputParts[$k] .= ' ' . $v['sortDir'];
+                               }
+                       }
+                       if ($compileComments && $selectFields[0]['comments']) {
+                               $fields = $selectFields[0]['comments'] . ' ';
+                       }
+                       $fields .= implode(', ', $outputParts);
+               }
+               return $fields;
+       }
+
+       /**
+        * Compiles a CASE ... WHEN flow-control construct based on input array (made with ->parseCaseStatement())
+        *
+        * @param array $components Array of case components, (made with ->parseCaseStatement())
+        * @return string Case when string
+        * @see parseCaseStatement()
+        */
+       protected function compileCaseStatement(array $components) {
+               $statement = 'CASE';
+               if (isset($components['case_field'])) {
+                       $statement .= ' ' . $components['case_field'];
+               } elseif (isset($components['case_value'])) {
+                       $statement .= ' ' . $components['case_value'][1] . $components['case_value'][0] . $components['case_value'][1];
+               }
+               foreach ($components['when'] as $when) {
+                       $statement .= ' WHEN ';
+                       $statement .= $this->compileWhereClause($when['when_value']);
+                       $statement .= ' THEN ';
+                       $statement .= $when['then_value'][1] . $when['then_value'][0] . $when['then_value'][1];
+               }
+               if (isset($components['else'])) {
+                       $statement .= ' ELSE ';
+                       $statement .= $components['else'][1] . $components['else'][0] . $components['else'][1];
+               }
+               $statement .= ' END';
+               return $statement;
+       }
+
+       /**
+        * Compiles a "FROM [output] WHERE..:" table list based on input array (made with ->parseFromTables())
+        *
+        * @param array $tablesArray Array of table names, (made with ->parseFromTables())
+        * @return string Table name string
+        * @see parseFromTables()
+        */
+       public function compileFromTables($tablesArray) {
+               // Prepare buffer variable:
+               $outputParts = array();
+               // Traverse the table names:
+               if (is_array($tablesArray)) {
+                       foreach ($tablesArray as $k => $v) {
+                               // Set table name:
+                               $outputParts[$k] = $v['table'];
+                               // Add alias AS if there:
+                               if ($v['as']) {
+                                       $outputParts[$k] .= ' ' . $v['as_keyword'] . ' ' . $v['as'];
+                               }
+                               if (is_array($v['JOIN'])) {
+                                       foreach ($v['JOIN'] as $join) {
+                                               $outputParts[$k] .= ' ' . $join['type'] . ' ' . $join['withTable'];
+                                               // Add alias AS if there:
+                                               if (isset($join['as']) && $join['as']) {
+                                                       $outputParts[$k] .= ' ' . $join['as_keyword'] . ' ' . $join['as'];
+                                               }
+                                               $outputParts[$k] .= ' ON ';
+                                               foreach ($join['ON'] as $condition) {
+                                                       if ($condition['operator'] !== '') {
+                                                               $outputParts[$k] .= ' ' . $condition['operator'] . ' ';
+                                                       }
+                                                       $outputParts[$k] .= $condition['left']['table'] ? $condition['left']['table'] . '.' : '';
+                                                       $outputParts[$k] .= $condition['left']['field'];
+                                                       $outputParts[$k] .= $condition['comparator'];
+                                                       if (!empty($condition['right']['value'])) {
+                                                               $value = $condition['right']['value'];
+                                                               $outputParts[$k] .= $value[1] . $this->compileAddslashes($value[0]) . $value[1];
+                                                       } else {
+                                                               $outputParts[$k] .= $condition['right']['table'] ? $condition['right']['table'] . '.' : '';
+                                                               $outputParts[$k] .= $condition['right']['field'];
+                                                       }
+                                               }
+                                       }
+                               }
+                       }
+               }
+               // Return imploded buffer:
+               return implode(', ', $outputParts);
+       }
+
+       /**
+        * Implodes an array of WHERE clause configuration into a WHERE clause.
+        *
+        * @param array $clauseArray WHERE clause configuration
+        * @return string WHERE clause as string.
+        * @see         explodeWhereClause()
+        */
+       public function compileWhereClause($clauseArray) {
+               // Prepare buffer variable:
+               $output = '';
+               // Traverse clause array:
+               if (is_array($clauseArray)) {
+                       foreach ($clauseArray as $k => $v) {
+                               // Set operator:
+                               $output .= $v['operator'] ? ' ' . $v['operator'] : '';
+                               // Look for sublevel:
+                               if (is_array($v['sub'])) {
+                                       $output .= ' (' . trim($this->compileWhereClause($v['sub'])) . ')';
+                               } elseif (isset($v['func']) && $v['func']['type'] === 'EXISTS') {
+                                       $output .= ' ' . trim($v['modifier']) . ' EXISTS (' . $this->compileSELECT($v['func']['subquery']) . ')';
+                               } else {
+                                       if (isset($v['func']) && $v['func']['type'] === 'LOCATE') {
+                                               $output .= ' ' . trim($v['modifier']) . ' LOCATE(';
+                                               $output .= $v['func']['substr'][1] . $v['func']['substr'][0] . $v['func']['substr'][1];
+                                               $output .= ', ' . ($v['func']['table'] ? $v['func']['table'] . '.' : '') . $v['func']['field'];
+                                               $output .= isset($v['func']['pos']) ? ', ' . $v['func']['pos'][0] : '';
+                                               $output .= ')';
+                                       } elseif (isset($v['func']) && $v['func']['type'] === 'IFNULL') {
+                                               $output .= ' ' . trim($v['modifier']) . ' IFNULL(';
+                                               $output .= ($v['func']['table'] ? $v['func']['table'] . '.' : '') . $v['func']['field'];
+                                               $output .= ', ' . $v['func']['default'][1] . $this->compileAddslashes($v['func']['default'][0]) . $v['func']['default'][1];
+                                               $output .= ')';
+                                       } elseif (isset($v['func']) && $v['func']['type'] === 'CAST') {
+                                               $output .= ' ' . trim($v['modifier']) . ' CAST(';
+                                               $output .= ($v['func']['table'] ? $v['func']['table'] . '.' : '') . $v['func']['field'];
+                                               $output .= ' AS ' . $v['func']['datatype'][0];
+                                               $output .= ')';
+                                       } elseif (isset($v['func']) && $v['func']['type'] === 'FIND_IN_SET') {
+                                               $output .= ' ' . trim($v['modifier']) . ' FIND_IN_SET(';
+                                               $output .= $v['func']['str'][1] . $v['func']['str'][0] . $v['func']['str'][1];
+                                               $output .= ', ' . ($v['func']['table'] ? $v['func']['table'] . '.' : '') . $v['func']['field'];
+                                               $output .= ')';
+                                       } else {
+                                               // Set field/table with modifying prefix if any:
+                                               $output .= ' ' . trim(($v['modifier'] . ' ' . ($v['table'] ? $v['table'] . '.' : '') . $v['field']));
+                                               // Set calculation, if any:
+                                               if ($v['calc']) {
+                                                       $output .= $v['calc'] . $v['calc_value'][1] . $this->compileAddslashes($v['calc_value'][0]) . $v['calc_value'][1];
+                                               }
+                                       }
+                                       // Set comparator:
+                                       if ($v['comparator']) {
+                                               $output .= ' ' . $v['comparator'];
+                                               // Detecting value type; list or plain:
+                                               if (\TYPO3\CMS\Core\Utility\GeneralUtility::inList('NOTIN,IN', strtoupper(str_replace(array(' ', TAB, CR, LF), '', $v['comparator'])))) {
+                                                       if (isset($v['subquery'])) {
+                                                               $output .= ' (' . $this->compileSELECT($v['subquery']) . ')';
+                                                       } else {
+                                                               $valueBuffer = array();
+                                                               foreach ($v['value'] as $realValue) {
+                                                                       $valueBuffer[] = $realValue[1] . $this->compileAddslashes($realValue[0]) . $realValue[1];
+                                                               }
+                                                               $output .= ' (' . trim(implode(',', $valueBuffer)) . ')';
+                                                       }
+                                               } else {
+                                                       if (\TYPO3\CMS\Core\Utility\GeneralUtility::inList('BETWEEN,NOT BETWEEN', $v['comparator'])) {
+                                                               $lbound = $v['values'][0];
+                                                               $ubound = $v['values'][1];
+                                                               $output .= ' ' . $lbound[1] . $this->compileAddslashes($lbound[0]) . $lbound[1];
+                                                               $output .= ' AND ';
+                                                               $output .= $ubound[1] . $this->compileAddslashes($ubound[0]) . $ubound[1];
+                                                       } else {
+                                                               if (isset($v['value']['operator'])) {
+                                                                       $values = array();
+                                                                       foreach ($v['value']['args'] as $fieldDef) {
+                                                                               $values[] = ($fieldDef['table'] ? $fieldDef['table'] . '.' : '') . $fieldDef['field'];
+                                                                       }
+                                                                       $output .= ' ' . $v['value']['operator'] . '(' . implode(',', $values) . ')';
+                                                               } else {
+                                                                       $output .= ' ' . $v['value'][1] . $this->compileAddslashes($v['value'][0]) . $v['value'][1];
+                                                               }
+                                                       }
+                                               }
+                                       }
+                               }
+                       }
+               }
+               // Return output buffer:
+               return $output;
+       }
+
+       /**
+        * Compile field definition
+        *
+        * @param array $fieldCfg Field definition parts
+        * @return string Field definition string
+        */
+       public function compileFieldCfg($fieldCfg) {
+               // Set type:
+               $cfg = $fieldCfg['fieldType'];
+               // Add value, if any:
+               if (strlen($fieldCfg['value'])) {
+                       $cfg .= '(' . $fieldCfg['value'] . ')';
+               }
+               // Add additional features:
+               if (is_array($fieldCfg['featureIndex'])) {
+                       foreach ($fieldCfg['featureIndex'] as $featureDef) {
+                               $cfg .= ' ' . $featureDef['keyword'];
+                               // Add value if found:
+                               if (is_array($featureDef['value'])) {
+                                       $cfg .= ' ' . $featureDef['value'][1] . $this->compileAddslashes($featureDef['value'][0]) . $featureDef['value'][1];
+                               }
+                       }
+               }
+               // Return field definition string:
+               return $cfg;
+       }
+
+       /*************************
+        *
+        * Debugging
+        *
+        *************************/
+       /**
+        * Check parsability of input SQL part string; Will parse and re-compile after which it is compared
+        *
+        * @param string $part Part definition of string; "SELECT" = fieldlist (also ORDER BY and GROUP BY), "FROM" = table list, "WHERE" = Where clause.
+        * @param string $str SQL string to verify parsability of
+        * @return mixed Returns array with string 1 and 2 if error, otherwise FALSE
+        */
+       public function debug_parseSQLpart($part, $str) {
+               $retVal = FALSE;
+               switch ($part) {
+                       case 'SELECT':
+                               $retVal = $this->debug_parseSQLpartCompare($str, $this->compileFieldList($this->parseFieldList($str)));
+                               break;
+                       case 'FROM':
+                               $retVal = $this->debug_parseSQLpartCompare($str, $this->compileFromTables($this->parseFromTables($str)));
+                               break;
+                       case 'WHERE':
+                               $retVal = $this->debug_parseSQLpartCompare($str, $this->compileWhereClause($this->parseWhereClause($str)));
+                               break;
+               }
+               return $retVal;
+       }
+
+       /**
+        * Compare two query strings by stripping away whitespace.
+        *
+        * @param string $str SQL String 1
+        * @param string $newStr SQL string 2
+        * @param boolean $caseInsensitive If TRUE, the strings are compared insensitive to case
+        * @return mixed Returns array with string 1 and 2 if error, otherwise FALSE
+        */
+       public function debug_parseSQLpartCompare($str, $newStr, $caseInsensitive = FALSE) {
+               if ($caseInsensitive) {
+                       $str1 = strtoupper($str);
+                       $str2 = strtoupper($newStr);
+               } else {
+                       $str1 = $str;
+                       $str2 = $newStr;
+               }
+
+                       // Fixing escaped chars:
+               $search = array('\0', '\n', '\r', '\Z');
+               $replace = array("\x00", "\x0a", "\x0d", "\x1a");
+               $str1 = str_replace($search, $replace, $str1);
+               $str2 = str_replace($search, $replace, $str2);
+
+               $search = array(' ', TAB, CR, LF);
+               if (str_replace($search, '', $this->trimSQL($str1)) !== str_replace($search, '', $this->trimSQL($str2))) {
+                       return array(
+                               str_replace($search, ' ', $str),
+                               str_replace($search, ' ', $newStr),
+                       );
+               }
+       }
+}
index e7b60dd..a15f88e 100644 (file)
@@ -1,27 +1,31 @@
 <?php
 namespace SJBR\StaticInfoTables\Utility;
 /***************************************************************
-*  Copyright notice
-*
-*  (c) 2013 StanislasRolland <typo3@sjbr.ca>
-*  All rights reserved
-*
-*  This script is part of the Typo3 project. The Typo3 project is
-*  free software; you can redistribute it and/or modify
-*  it under the terms of the GNU General Public License as published by
-*  the Free Software Foundation; either version 2 of the License, or
-*  (at your option) any later version.
-*
-*  The GNU General Public License can be found at
-*  http://www.gnu.org/copyleft/gpl.html.
-*
-*  This script is distributed in the hope that it will be useful,
-*  but WITHOUT ANY WARRANTY; without even the implied warranty of
-*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-*  GNU General Public License for more details.
-*
-*  This copyright notice MUST APPEAR in all copies of the script!
-***************************************************************/
+ *  Copyright notice
+ *
+ *  (c) 2013-2015 StanislasRolland <typo3@sjbr.ca>
+ *  All rights reserved
+ *
+ *  This script is part of the Typo3 project. The Typo3 project is
+ *  free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  The GNU General Public License can be found at
+ *  http://www.gnu.org/copyleft/gpl.html.
+ *
+ *  This script is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  This copyright notice MUST APPEAR in all copies of the script!
+ ***************************************************************/
+
+use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
 /**
  * Utility used by the update script of the base extension and of the language packs
  */
@@ -54,9 +58,14 @@ class DatabaseUpdateUtility {
         * @return void
         */
        public function doUpdate($extensionKey) {
-               $extPath = \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::extPath($extensionKey);
-               $fileContent = explode(LF, \TYPO3\CMS\Core\Utility\GeneralUtility::getUrl($extPath . 'ext_tables_static+adt.sql'));
-               $sqlParser = $this->objectManager->get('TYPO3\\CMS\\Core\\Database\\SqlParser');
+               $extPath = ExtensionManagementUtility::extPath($extensionKey);
+               $fileContent = explode(LF, GeneralUtility::getUrl($extPath . 'ext_tables_static+adt.sql'));
+               // SQL parser was moved from core to dbal in TYPO3 CMS 7.5
+               if (is_object($GLOBALS['TYPO3_DB']->SQLparser)) {
+                       $sqlParser = $GLOBALS['TYPO3_DB']->SQLparser;
+               } else {
+                       $sqlParser = $this->objectManager->get(\SJBR\StaticInfoTables\Database\SqlParser::class);
+               }
                foreach ($fileContent as $line) {
                        $line = trim($line);
                        if ($line && preg_match('#^UPDATE#i', $line)) {
@@ -72,5 +81,4 @@ class DatabaseUpdateUtility {
                        }
                }
        }
-}
-?>
\ No newline at end of file
+}
\ No newline at end of file