typo3/sysext/extbase/Classes/Persistence/Storage/Typo3DbBackend.php

   1 <?php
   2 /***************************************************************
   3 *  Copyright notice
   4 *
   5 *  (c) 2009 Jochen Rau <jochen.rau@typoplanet.de>
   6 *  All rights reserved
   7 *
   8 *  This class is a backport of the corresponding class of FLOW3.
   9 *  All credits go to the v5 team.
  10 *
  11 *  This script is part of the TYPO3 project. The TYPO3 project is
  12 *  free software; you can redistribute it and/or modify
  13 *  it under the terms of the GNU General Public License as published by
  14 *  the Free Software Foundation; either version 2 of the License, or
  15 *  (at your option) any later version.
  16 *
  17 *  The GNU General Public License can be found at
  18 *  http://www.gnu.org/copyleft/gpl.html.
  19 *
  20 *  This script is distributed in the hope that it will be useful,
  21 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 *  GNU General Public License for more details.
  24 *
  25 *  This copyright notice MUST APPEAR in all copies of the script!
  26 ***************************************************************/
  27
  28 /**
  29  * A Storage backend
  30  *
  31  * @package Extbase
  32  * @subpackage Persistence\Storage
  33  * @version $Id: $
  34  */
  35 class Tx_Extbase_Persistence_Storage_Typo3DbBackend implements Tx_Extbase_Persistence_Storage_BackendInterface, t3lib_Singleton {
  36
  37         const OPERATOR_EQUAL_TO_NULL = 'operatorEqualToNull';
  38         const OPERATOR_NOT_EQUAL_TO_NULL = 'operatorNotEqualToNull';
  39
  40         /**
  41          * The TYPO3 database object
  42          *
  43          * @var t3lib_db
  44          */
  45         protected $databaseHandle;
  46
  47         /**
  48          * @var Tx_Extbase_Persistence_DataMapper
  49          */
  50         protected $dataMapper;
  51
  52         /**
  53          * The TYPO3 page select object. Used for language and workspace overlay
  54          *
  55          * @var t3lib_pageSelect
  56          */
  57         protected $pageSelectObject;
  58
  59         /**
  60          * Constructs this Storage Backend instance
  61          *
  62          * @param t3lib_db $databaseHandle The database handle
  63          */
  64         public function __construct($databaseHandle) {
  65                 $this->databaseHandle = $databaseHandle;
  66         }
  67
  68         /**
  69          * Injects the DataMapper to map nodes to objects
  70          *
  71          * @param Tx_Extbase_Persistence_Mapper_DataMapper $dataMapper
  72          * @return void
  73          */
  74         public function injectDataMapper(Tx_Extbase_Persistence_Mapper_DataMapper $dataMapper) {
  75                 $this->dataMapper = $dataMapper;
  76         }
  77
  78         /**
  79          * Adds a row to the storage
  80          *
  81          * @param string $tableName The database table name
  82          * @param array $row The row to be inserted
  83          * @param boolean $isRelation TRUE if we are currently inserting into a relation table, FALSE by default
  84          * @return int The uid of the inserted row
  85          */
  86         public function addRow($tableName, array $row, $isRelation = FALSE) {
  87                 $fields = array();
  88                 $values = array();
  89                 $parameters = array();
  90                 if (isset($row['uid'])) {
  91                         unset($row['uid']);
  92                 }
  93                 foreach ($row as $columnName => $value) {
  94                         $fields[] = $columnName;
  95                         $values[] = '?';
  96                         $parameters[] = $value;
  97                 }
  98
  99                 $sqlString = 'INSERT INTO ' . $tableName . ' (' . implode(', ', $fields) . ') VALUES (' . implode(', ', $values) . ')';
 100                 $this->replacePlaceholders($sqlString, $parameters);
 101                 $this->databaseHandle->sql_query($sqlString);
 102                 $this->checkSqlErrors();
 103                 $uid = $this->databaseHandle->sql_insert_id();
 104                 if (!$isRelation) {
 105                         $this->clearPageCache($tableName, $uid);
 106                 }
 107                 return $uid;
 108         }
 109
 110         /**
 111          * Updates a row in the storage
 112          *
 113          * @param string $tableName The database table name
 114          * @param array $row The row to be updated
 115          * @param boolean $isRelation TRUE if we are currently inserting into a relation table, FALSE by default
 116          * @return void
 117          */
 118         public function updateRow($tableName, array $row, $isRelation = FALSE) {
 119                 if (!isset($row['uid'])) throw new InvalidArgumentException('The given row must contain a value for "uid".');
 120                 $uid = (int)$row['uid'];
 121                 unset($row['uid']);
 122                 $fields = array();
 123                 $parameters = array();
 124                 foreach ($row as $columnName => $value) {
 125                         $fields[] = $columnName . '=?';
 126                         $parameters[] = $value;
 127                 }
 128                 $parameters[] = $uid;
 129
 130                 $sqlString = 'UPDATE ' . $tableName . ' SET ' . implode(', ', $fields) . ' WHERE uid=?';
 131                 $this->replacePlaceholders($sqlString, $parameters);
 132
 133                 $returnValue = $this->databaseHandle->sql_query($sqlString);
 134                 $this->checkSqlErrors();
 135                 if (!$isRelation) {
 136                         $this->clearPageCache($tableName, $uid);
 137                 }
 138                 return $returnValue;
 139         }
 140
 141         /**
 142          * Deletes a row in the storage
 143          *
 144          * @param string $tableName The database table name
 145          * @param array $uid The uid of the row to be deleted
 146          * @param boolean $isRelation TRUE if we are currently inserting into a relation table, FALSE by default
 147          * @return void
 148          */
 149         public function removeRow($tableName, $uid, $isRelation = FALSE) {
 150                 $sqlString = 'DELETE FROM ' . $tableName . ' WHERE uid=?';
 151                 $this->replacePlaceholders($sqlString, array((int)$uid));
 152                 if (!$isRelation) {
 153                         $this->clearPageCache($tableName, $uid, $isRelation);
 154                 }
 155                 $returnValue = $this->databaseHandle->sql_query($sqlString);
 156                 $this->checkSqlErrors();
 157                 return $returnValue;
 158         }
 159
 160         /**
 161          * Returns an array with tuples matching the query.
 162          *
 163          * @param Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query
 164          * @return array The matching tuples
 165          */
 166         public function getRows(Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query) {
 167                 $statement = $this->parseQuery($query);
 168 //              debug($statement, -2); // FIXME remove debug code
 169                 $result = $this->databaseHandle->sql_query($statement);
 170                 $this->checkSqlErrors();
 171                 if ($result) {
 172                         $tuples = $this->getRowsFromResult($query->getSource(), $result);
 173                 }
 174
 175                 return $tuples;
 176         }
 177
 178         /**
 179          * Returns an array with tuples matching the query.
 180          *
 181          * @param Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query
 182          * @return array The matching tuples
 183          */
 184         public function parseQuery(Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query) {
 185                 $statement = '';
 186                 $parameters = array();
 187                 $constraint = $query->getConstraint();
 188                 if($constraint instanceof Tx_Extbase_Persistence_QOM_StatementInterface) {
 189                         if ($constraint->getLanguage() === Tx_Extbase_Persistence_QOM_QueryObjectModelInterface::TYPO3_SQL_MYSQL) {
 190                                 $statement = $constraint->getStatement();
 191                                 $parameters= $query->getBoundVariableValues();
 192                         } else {
 193                                 throw new Tx_Extbase_Persistence_Exception('Unsupported query language.', 1248701951);
 194                         }
 195                 } else {
 196                         $sql = array();
 197                         $sql['tables'] = array();
 198                         $sql['fields'] = array();
 199                         $sql['where'] = array();
 200                         $sql['additionalWhereClause'] = array();
 201                         $sql['orderings'] = array();
 202                         $sql['limit'] = array();
 203                         $tuples = array();
 204
 205                         $source = $query->getSource();
 206                         $this->parseSource($query, $source, $sql, $parameters);
 207
 208                         $statement = 'SELECT ' . implode(',', $sql['fields']) . ' FROM ' . implode(' ', $sql['tables']);
 209
 210                         $this->parseConstraint($query->getConstraint(), $source, $sql, $parameters, $query->getBoundVariableValues());
 211
 212                         if (!empty($sql['where'])) {
 213                                 $statement .= ' WHERE ' . implode('', $sql['where']);
 214                                 if (!empty($sql['additionalWhereClause'])) {
 215                                         $statement .= ' AND ' . implode(' AND ', $sql['additionalWhereClause']);
 216                                 }
 217                         } elseif (!empty($sql['additionalWhereClause'])) {
 218                                 $statement .= ' WHERE ' . implode(' AND ', $sql['additionalWhereClause']);
 219                         }
 220
 221                         $this->parseOrderings($query->getOrderings(), $source, $sql, $parameters, $query->getBoundVariableValues());
 222                         if (!empty($sql['orderings'])) {
 223                                 $statement .= ' ORDER BY ' . implode(', ', $sql['orderings']);
 224                         }
 225
 226                         $this->parseLimitAndOffset($query->getLimit(), $query->getOffset(), $sql);
 227                         if (!empty($sql['limit'])) {
 228                                 $statement .= ' LIMIT ' . $sql['limit'];
 229                         }
 230                 }
 231
 232                 $this->replacePlaceholders($statement, $parameters);
 233
 234                 return $statement;
 235         }
 236
 237         /**
 238          * Checks if a Value Object equal to the given Object exists in the data base
 239          *
 240          * @param array $properties The properties of the Value Object
 241          * @param Tx_Extbase_Persistence_Mapper_DataMap $dataMap The Data Map
 242          * @return array The matching tuples
 243          */
 244         public function hasValueObject(array $properties, Tx_Extbase_Persistence_Mapper_DataMap $dataMap) {
 245                 $fields = array();
 246                 $parameters = array();
 247                 foreach ($properties as $propertyName => $propertyValue) {
 248                         if ($dataMap->isPersistableProperty($propertyName) && ($propertyName !== 'uid')) {
 249                                 $fields[] = $dataMap->getColumnMap($propertyName)->getColumnName() . '=?';
 250                                 $parameters[] = $dataMap->convertPropertyValueToFieldValue($propertyValue);
 251                         }
 252                 }
 253                 $fields[] = 'deleted!=1';
 254                 $fields[] = 'hidden!=1';
 255
 256                 $sqlString = 'SELECT * FROM ' . $dataMap->getTableName() .  ' WHERE ' . implode(' AND ', $fields);
 257                 $this->replacePlaceholders($sqlString, $parameters);
 258                 $res = $this->databaseHandle->sql_query($sqlString);
 259                 $this->checkSqlErrors();
 260                 $row = $this->databaseHandle->sql_fetch_assoc($res);
 261                 if ($row !== FALSE) {
 262                         return $row['uid'];
 263                 } else {
 264                         return FALSE;
 265                 }
 266         }
 267
 268         /**
 269          * Transforms a Query Source into SQL and parameter arrays
 270          *
 271          * @param Tx_Extbase_Persistence_QOM_QueryObjectModel $query
 272          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 273          * @param array &$sql
 274          * @param array &$parameters
 275          * @return void
 276          */
 277         protected function parseSource(Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql, array &$parameters) {
 278                 if ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 279                         $tableName = $source->getSelectorName();
 280                         $sql['fields'][] = $tableName . '.*';
 281                         $sql['tables'][] = $tableName;
 282                         $querySettings = $query->getQuerySettings();
 283                         if ($querySettings instanceof Tx_Extbase_Persistence_Typo3QuerySettingsInterface) {
 284                                 if ($querySettings->getRespectEnableFields()) {
 285                                         $this->addEnableFieldsStatement($tableName, $sql);
 286                                 }
 287                                 if ($querySettings->getRespectStoragePage()) {
 288                                         $this->addPageIdStatement($tableName, $sql);
 289                                 }
 290                         }
 291                 } elseif ($source instanceof Tx_Extbase_Persistence_QOM_JoinInterface) {
 292                         $this->parseJoin($query, $source, $sql, $parameters);
 293                 }
 294         }
 295
 296         /**
 297          * Transforms a Join into SQL and parameter arrays
 298          *
 299          * @param Tx_Extbase_Persistence_QOM_QueryObjectModel $query
 300          * @param Tx_Extbase_Persistence_QOM_JoinInterface $join
 301          * @param array &$sql
 302          * @param array &$parameters
 303          * @return void
 304          */
 305         protected function parseJoin(Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query, Tx_Extbase_Persistence_QOM_JoinInterface $join, array &$sql, array &$parameters) {
 306                 $leftSource = $join->getLeft();
 307                 $leftTableName = $leftSource->getSelectorName();
 308                 $rightSource = $join->getRight();
 309                 $rightTableName = $rightSource->getSelectorName();
 310
 311                 $sql['fields'][] = $leftTableName . '.*';
 312                 $sql['fields'][] = $rightTableName . '.*';
 313
 314                 // TODO Implement support for different join types and nested joins
 315                 $sql['tables'][] = $leftTableName . ' LEFT JOIN ' . $rightTableName;
 316
 317                 $joinCondition = $join->getJoinCondition();
 318                 // TODO Check the parsing of the join
 319                 if ($joinCondition instanceof Tx_Extbase_Persistence_QOM_EquiJoinCondition) {
 320                         $column1Name = $this->dataMapper->convertPropertyNameToColumnName($joinCondition->getProperty1Name(), $leftSource->getNodeTypeName());
 321                         $column2Name = $this->dataMapper->convertPropertyNameToColumnName($joinCondition->getProperty2Name(), $rightSource->getNodeTypeName());
 322                         $sql['tables'][] = 'ON ' . $joinCondition->getSelector1Name() . '.' . $column1Name . ' = ' . $joinCondition->getSelector2Name() . '.' . $column2Name;
 323                 }
 324                 // TODO Implement childtableWhere
 325
 326                 $querySettings = $query->getQuerySettings();
 327                 if ($querySettings instanceof Tx_Extbase_Persistence_Typo3QuerySettingsInterface) {
 328                         if ($querySettings->getRespectEnableFields()) {
 329                                 $this->addEnableFieldsStatement($leftTableName, $sql);
 330                                 $this->addEnableFieldsStatement($rightTableName, $sql);
 331                         }
 332                         if ($querySettings->getRespectStoragePage()) {
 333                                 $this->addPageIdStatement($leftTableName, $sql);
 334                                 $this->addPageIdStatement($rightTableName, $sql);
 335                         }
 336                 }
 337         }
 338
 339         /**
 340          * Transforms a constraint into SQL and parameter arrays
 341          *
 342          * @param Tx_Extbase_Persistence_QOM_ConstraintInterface $constraint
 343          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 344          * @param array &$sql
 345          * @param array &$parameters
 346          * @param array $boundVariableValues
 347          * @return void
 348          */
 349         protected function parseConstraint(Tx_Extbase_Persistence_QOM_ConstraintInterface $constraint = NULL, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql, array &$parameters, array $boundVariableValues) {
 350                 if ($constraint instanceof Tx_Extbase_Persistence_QOM_AndInterface) {
 351                         $sql['where'][] = '(';
 352                         $this->parseConstraint($constraint->getConstraint1(), $source, $sql, $parameters, $boundVariableValues);
 353                         $sql['where'][] = ' AND ';
 354                         $this->parseConstraint($constraint->getConstraint2(), $source, $sql, $parameters, $boundVariableValues);
 355                         $sql['where'][] = ')';
 356                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_OrInterface) {
 357                         $sql['where'][] = '(';
 358                         $this->parseConstraint($constraint->getConstraint1(), $source, $sql, $parameters, $boundVariableValues);
 359                         $sql['where'][] = ' OR ';
 360                         $this->parseConstraint($constraint->getConstraint2(), $source, $sql, $parameters, $boundVariableValues);
 361                         $sql['where'][] = ')';
 362                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_NotInterface) {
 363                         $sql['where'][] = 'NOT (';
 364                         $this->parseConstraint($constraint->getConstraint(), $source, $sql, $parameters, $boundVariableValues);
 365                         $sql['where'][] = ')';
 366                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_ComparisonInterface) {
 367                         $this->parseComparison($constraint, $source, $sql, $parameters, $boundVariableValues);
 368                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_RelatedInterface) {
 369                         $this->parseRelated($constraint, $sql, $parameters, $boundVariableValues);
 370                 }
 371         }
 372
 373         /**
 374          * Parse a Comparison into SQL and parameter arrays.
 375          *
 376          * @param Tx_Extbase_Persistence_QOM_ComparisonInterface $comparison The comparison to parse
 377          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 378          * @param array &$sql SQL query parts to add to
 379          * @param array &$parameters Parameters to bind to the SQL
 380          * @param array $boundVariableValues The bound variables in the query and their values
 381          * @return void
 382          */
 383         protected function parseComparison(Tx_Extbase_Persistence_QOM_ComparisonInterface $comparison, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql, array &$parameters, array $boundVariableValues) {
 384                 if (!($comparison->getOperand2() instanceof Tx_Extbase_Persistence_QOM_BindVariableValueInterface)) throw new Tx_Extbase_Persistence_Exception('Type of operand is not supported', 1247581135);
 385
 386                 $value = $boundVariableValues[$comparison->getOperand2()->getBindVariableName()];
 387                 $operator = $comparison->getOperator();
 388                 if ($value === NULL) {
 389                         if ($operator === Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_EQUAL_TO) {
 390                                 $operator = self::OPERATOR_EQUAL_TO_NULL;
 391                         } elseif ($operator === Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_NOT_EQUAL_TO) {
 392                                 $operator = self::OPERATOR_NOT_EQUAL_TO_NULL;
 393                         } else {
 394                                 // TODO Throw exception
 395                         }
 396                 }
 397                 $parameters[] = $value;
 398
 399                 $this->parseDynamicOperand($comparison->getOperand1(), $operator, $source, $sql, $parameters);
 400         }
 401
 402         /**
 403          * Parse a DynamicOperand into SQL and parameter arrays.
 404          *
 405          * @param Tx_Extbase_Persistence_QOM_DynamicOperandInterface $operand
 406          * @param string $operator One of the JCR_OPERATOR_* constants
 407          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 408          * @param array &$sql SQL query parts to add to
 409          * @param array &$parameters
 410          * @param string $valueFunction an aoptional SQL function to apply to the operand value
 411          * @return void
 412          */
 413         protected function parseDynamicOperand(Tx_Extbase_Persistence_QOM_DynamicOperandInterface $operand, $operator, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql, array &$parameters, $valueFunction = NULL) {
 414                 if ($operand instanceof Tx_Extbase_Persistence_QOM_LowerCaseInterface) {
 415                         $this->parseDynamicOperand($operand->getOperand(), $operator, $source, $sql, $parameters, 'LOWER');
 416                 } elseif ($operand instanceof Tx_Extbase_Persistence_QOM_UpperCaseInterface) {
 417                         $this->parseDynamicOperand($operand->getOperand(), $operator, $source, $sql, $parameters, 'UPPER');
 418                 } elseif ($operand instanceof Tx_Extbase_Persistence_QOM_PropertyValueInterface) {
 419                         $tableName = $operand->getSelectorName();
 420                         // FIXME Discuss the translation from propertyName to columnName
 421                         if ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 422                                 $className = $source->getNodeTypeName();
 423                         } else {
 424                                 $className = '';
 425                         }
 426                         $columnName = $this->dataMapper->convertPropertyNameToColumnName($operand->getPropertyName(), $className);
 427                         $operator = $this->resolveOperator($operator);
 428
 429                         if ($valueFunction === NULL) {
 430                                 $constraintSQL .= (!empty($tableName) ? $tableName . '.' : '') . $columnName .  ' ' . $operator . ' ?';
 431                         } else {
 432                                 $constraintSQL .= $valueFunction . '(' . (!empty($tableName) ? $tableName . '.' : '') . $columnName .  ' ' . $operator . ' ?';
 433                         }
 434
 435                         $sql['where'][] = $constraintSQL;
 436                 }
 437         }
 438
 439         /**
 440          * Returns the SQL operator for the given JCR operator type.
 441          *
 442          * @param string $operator One of the JCR_OPERATOR_* constants
 443          * @return string an SQL operator
 444          */
 445         protected function resolveOperator($operator) {
 446                 switch ($operator) {
 447                         case self::OPERATOR_EQUAL_TO_NULL:
 448                                 $operator = 'IS';
 449                                 break;
 450                         case self::OPERATOR_NOT_EQUAL_TO_NULL:
 451                                 $operator = 'IS NOT';
 452                                 break;
 453                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_EQUAL_TO:
 454                                 $operator = '=';
 455                                 break;
 456                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_NOT_EQUAL_TO:
 457                                 $operator = '!=';
 458                                 break;
 459                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_LESS_THAN:
 460                                 $operator = '<';
 461                                 break;
 462                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_LESS_THAN_OR_EQUAL_TO:
 463                                 $operator = '<=';
 464                                 break;
 465                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_GREATER_THAN:
 466                                 $operator = '>';
 467                                 break;
 468                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_GREATER_THAN_OR_EQUAL_TO:
 469                                 $operator = '>=';
 470                                 break;
 471                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_LIKE:
 472                                 $operator = 'LIKE';
 473                                 break;
 474                         default:
 475                                 throw new Tx_Extbase_Persistence_Exception('Unsupported operator encountered.', 1242816073);
 476                 }
 477
 478                 return $operator;
 479         }
 480
 481         /**
 482          * Replace query placeholders in a query part by the given
 483          * parameters.
 484          *
 485          * @param string $queryPart The query part with placeholders
 486          * @param array $parameters The parameters
 487          * @return string The query part with replaced placeholders
 488          */
 489         protected function replacePlaceholders(&$sqlString, array $parameters) {
 490                 if (substr_count($sqlString, '?') !== count($parameters)) throw new Tx_Extbase_Persistence_Exception('The number of question marks to replace must be equal to the number of parameters.', 1242816074);
 491                 $offset = 0;
 492                 foreach ($parameters as $parameter) {
 493                         $markPosition = strpos($sqlString, '?', $offset);
 494                         if ($markPosition !== FALSE) {
 495                                 if ($parameter === NULL) {
 496                                         $parameter = 'NULL';
 497                                 } else {
 498                                         $parameter = $this->databaseHandle->fullQuoteStr($parameter, 'foo'); // FIXME This may not work with DBAL; check this
 499                                 }
 500                                 $sqlString = substr($sqlString, 0, $markPosition) . $parameter . substr($sqlString, $markPosition + 1);
 501                         }
 502                         $offset = $markPosition + strlen($parameter);
 503                 }
 504         }
 505
 506         /**
 507          * Builds the enable fields statement
 508          *
 509          * @param string $tableName The database table name
 510          * @param array &$sql The query parts
 511          * @return void
 512          */
 513         protected function addEnableFieldsStatement($tableName, array &$sql) {
 514                 if (is_array($GLOBALS['TCA'][$tableName]['ctrl'])) {
 515                         if (TYPO3_MODE === 'FE') {
 516                                 $statement = $GLOBALS['TSFE']->sys_page->enableFields($tableName);
 517                         } else { // TYPO3_MODE === 'BE'
 518                                 $statement = t3lib_BEfunc::deleteClause($tableName);
 519                                 $statement .= t3lib_BEfunc::BEenableFields($tableName);
 520                         }
 521                         if(!empty($statement)) {
 522                                 $statement = substr($statement, 5);
 523                                 $sql['additionalWhereClause'][] = $statement;
 524                         }
 525                 }
 526         }
 527
 528         /**
 529          * Builds the page ID checking statement
 530          *
 531          * @param string $tableName The database table name
 532          * @param array &$sql The query parts
 533          * @return void
 534          */
 535         protected function addPageIdStatement($tableName, array &$sql) {
 536                 if (is_array($GLOBALS['TCA'][$tableName]['ctrl'])) {
 537                         $extbaseFrameworkConfiguration = Tx_Extbase_Dispatcher::getExtbaseFrameworkConfiguration();
 538                         $sql['additionalWhereClause'][] = $tableName . '.pid IN (' . implode(', ', t3lib_div::intExplode(',', $extbaseFrameworkConfiguration['persistence']['storagePid'])) . ')';
 539                 }
 540         }
 541
 542         /**
 543          * Transforms orderings into SQL
 544          *
 545          * @param array $orderings
 546          * @param array &$sql
 547          * @param array &$parameters
 548          * @param array $boundVariableValues
 549          * @return void
 550          */
 551         protected function parseOrderings(array $orderings, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql, array &$parameters, array $boundVariableValues) {
 552                 foreach ($orderings as $ordering) {
 553                         $operand = $ordering->getOperand();
 554                         $order = $ordering->getOrder();
 555                         if ($operand instanceof Tx_Extbase_Persistence_QOM_PropertyValue) {
 556                                 switch ($order) {
 557                                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_ORDER_ASCENDING:
 558                                                 $order = 'ASC';
 559                                                 break;
 560                                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_ORDER_DESCENDING:
 561                                                 $order = 'DESC';
 562                                                 break;
 563                                         default:
 564                                                 throw new Tx_Extbase_Persistence_Exception('Unsupported order encountered.', 1242816074);
 565                                 }
 566                                 if ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 567                                         $nodeTypeName = $source->getNodeTypeName();
 568                                 } else {
 569                                         $nodeTypeName = '';
 570                                 }
 571                                 $columnName = $this->dataMapper->convertPropertyNameToColumnName($ordering->getOperand()->getPropertyName(), $nodeTypeName);
 572                                 $sql['orderings'][] = $columnName . ' ' . $order;
 573                         }
 574                 }
 575         }
 576
 577         /**
 578          * Transforms limit and offset into SQL
 579          *
 580          * @param int $limit
 581          * @param int $offset
 582          * @param array &$sql
 583          * @return void
 584          */
 585         protected function parseLimitAndOffset($limit, $offset, array &$sql) {
 586                 if ($limit !== NULL && $offset !== NULL) {
 587                         $sql['limit'] = $offset . ', ' . $limit;
 588                 } elseif ($limit !== NULL) {
 589                         $sql['limit'] = $limit;
 590                 }
 591         }
 592
 593         /**
 594          * Transforms a Resource from a database query to an array of rows. Performs the language and
 595          * workspace overlay before.
 596          *
 597          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source (selector od join)
 598          *
 599          * @return array The result as an array of rows (tuples)
 600          */
 601         protected function getRowsFromResult(Tx_Extbase_Persistence_QOM_SourceInterface $source, $res) {
 602                 $rows = array();
 603                 while ($row = $this->databaseHandle->sql_fetch_assoc($res)) {
 604                         if      ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 605                                 // FIXME The overlay is only performed if we query a single table; no joins
 606                                 $row = $this->doLanguageAndWorkspaceOverlay($source->getSelectorName(), $row);
 607                         }
 608                         if (is_array($row)) {
 609                                 // TODO Check if this is necessary, maybe the last line is enough
 610                                 $arrayKeys = range(0,count($row));
 611                                 array_fill_keys($arrayKeys, $row);
 612                                 $rows[] = $row;
 613                         }
 614                 }
 615                 return $rows;
 616         }
 617
 618         /**
 619          * Performs workspace and language overlay on the given row array. The language and workspace id is automatically
 620          * detected (depending on FE or BE context). You can also explicitly set the language/workspace id.
 621          *
 622          * @param Tx_Extbase_Persistence_Mapper_DataMap $dataMap
 623          * @param array $row The row array (as reference)
 624          * @param string $languageUid The language id
 625          * @param string $workspaceUidUid The workspace id
 626          * @return void
 627          */
 628         protected function doLanguageAndWorkspaceOverlay($tableName, array $row, $languageUid = NULL, $workspaceUid = NULL) {
 629                 if (!($this->pageSelectObject instanceof t3lib_pageSelect)) {
 630                         if (TYPO3_MODE == 'FE') {
 631                                 if (is_object($GLOBALS['TSFE'])) {
 632                                         $this->pageSelectObject = $GLOBALS['TSFE']->sys_page;
 633                                         if ($languageUid === NULL) {
 634                                                 $languageUid = $GLOBALS['TSFE']->sys_language_content;
 635                                         }
 636                                 } else {
 637                                         require_once(PATH_t3lib . 'class.t3lib_page.php');
 638                                         $this->pageSelectObject = t3lib_div::makeInstance('t3lib_pageSelect');
 639                                         if ($languageUid === NULL) {
 640                                                 $languageUid = intval(t3lib_div::_GP('L'));
 641                                         }
 642                                 }
 643                                 if ($workspaceUid !== NULL) {
 644                                         $this->pageSelectObject->versioningWorkspaceId = $workspaceUid;
 645                                 }
 646                         } else {
 647                                 require_once(PATH_t3lib . 'class.t3lib_page.php');
 648                                 $this->pageSelectObject = t3lib_div::makeInstance( 't3lib_pageSelect' );
 649                                 if ($workspaceUid === NULL) {
 650                                         $workspaceUid = $GLOBALS['BE_USER']->workspace;
 651                                 }
 652                                 $this->pageSelectObject->versioningWorkspaceId = $workspaceUid;
 653                         }
 654                 }
 655
 656                 $this->pageSelectObject->versionOL($tableName, $row, TRUE);
 657                 $row = $this->pageSelectObject->getRecordOverlay($tableName, $row, $languageUid, ''); //'hideNonTranslated'
 658                 // TODO Skip if empty languageoverlay (languagevisibility)
 659                 return $row;
 660         }
 661
 662         /**
 663          * Checks if there are SQL errors in the last query, and if yes, throw an exception.
 664          *
 665          * @return void
 666          * @throws Tx_Extbase_Persistence_Storage_Exception_SqlError
 667          */
 668         protected function checkSqlErrors() {
 669                 $error = $this->databaseHandle->sql_error();
 670                 if ($error !== '') {
 671                         throw new Tx_Extbase_Persistence_Storage_Exception_SqlError($error, 1247602160);
 672                 }
 673         }
 674
 675         /**
 676          * Clear the TYPO3 page cache for the given record.
 677          * Much of this functionality is taken from t3lib_tcemain::clear_cache() which unfortunately only works with logged-in BE user.
 678          *
 679          * @param $tableName Table name of the record
 680          * @param $uid UID of the record
 681          * @return void
 682          */
 683         protected function clearPageCache($tableName, $uid) {
 684                 $extbaseSettings = Tx_Extbase_Dispatcher::getExtbaseFrameworkConfiguration();
 685                 if (isset($extbaseSettings['persistence']['enableAutomaticCacheClearing']) && $extbaseSettings['persistence']['enableAutomaticCacheClearing'] === '1') {
 686                 } else {
 687                         // if disabled, return
 688                         return;
 689                 }
 690
 691                 $result = $this->databaseHandle->exec_SELECTquery('pid', $tableName, 'uid='.intval($uid));
 692
 693                 $pageIdsToClear = array();
 694                 if ($row = $this->databaseHandle->sql_fetch_assoc($result))     {
 695                         $storagePage = $row['pid'];
 696                         $pageIdsToClear[] = $storagePage;
 697                 }
 698                 if (!$storagePage) {
 699                         return;
 700                 }
 701
 702                 $pageTSConfig = t3lib_BEfunc::getPagesTSconfig($storagePage);
 703                 if (isset($pageTSConfig['TCEMAIN.']['clearCacheCmd']))  {
 704                         $clearCacheCommands = t3lib_div::trimExplode(',',strtolower($pageTSConfig['TCEMAIN.']['clearCacheCmd']),1);
 705                         $clearCacheCommands = array_unique($clearCacheCommands);
 706                         foreach ($clearCacheCommands as $clearCacheCommand)     {
 707                                 if (t3lib_div::testInt($clearCacheCommand))     {
 708                                         $pageIdsToClear[] = $clearCacheCommand;
 709                                 }
 710                         }
 711                 }
 712
 713                 Tx_Extbase_Utility_Cache::clearPageCache($pageIdsToClear);
 714         }
 715 }
 716
 717 ?>