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         const OPERATOR_IN = 'operatorIn';
  40         const OPERATOR_NOT_IN = 'operatorNotIn';
  41
  42         /**
  43          * The TYPO3 database object
  44          *
  45          * @var t3lib_db
  46          */
  47         protected $databaseHandle;
  48
  49         /**
  50          * @var Tx_Extbase_Persistence_DataMapper
  51          */
  52         protected $dataMapper;
  53
  54         /**
  55          * The TYPO3 page select object. Used for language and workspace overlay
  56          *
  57          * @var t3lib_pageSelect
  58          */
  59         protected $pageSelectObject;
  60
  61         /**
  62          * A first-level TypoScript configuration cache
  63          *
  64          * @var array
  65          */
  66         protected $pageTSConfigCache = array();
  67
  68         /**
  69          * Caches information about tables (esp. the existing column names)
  70          *
  71          * @var array
  72          */
  73         protected $tableInformationCache = array();
  74
  75         /**
  76          * Constructs this Storage Backend instance
  77          *
  78          * @param t3lib_db $databaseHandle The database handle
  79          */
  80         public function __construct($databaseHandle) {
  81                 $this->databaseHandle = $databaseHandle;
  82         }
  83
  84         /**
  85          * Injects the DataMapper to map nodes to objects
  86          *
  87          * @param Tx_Extbase_Persistence_Mapper_DataMapper $dataMapper
  88          * @return void
  89          */
  90         public function injectDataMapper(Tx_Extbase_Persistence_Mapper_DataMapper $dataMapper) {
  91                 $this->dataMapper = $dataMapper;
  92         }
  93
  94         /**
  95          * Adds a row to the storage
  96          *
  97          * @param string $tableName The database table name
  98          * @param array $row The row to be inserted
  99          * @param boolean $isRelation TRUE if we are currently inserting into a relation table, FALSE by default
 100          * @return int The uid of the inserted row
 101          */
 102         public function addRow($tableName, array $row, $isRelation = FALSE) {
 103                 $fields = array();
 104                 $values = array();
 105                 $parameters = array();
 106                 if (isset($row['uid'])) {
 107                         unset($row['uid']);
 108                 }
 109                 foreach ($row as $columnName => $value) {
 110                         $fields[] = $columnName;
 111                         $values[] = '?';
 112                         $parameters[] = $value;
 113                 }
 114
 115                 $sqlString = 'INSERT INTO ' . $tableName . ' (' . implode(', ', $fields) . ') VALUES (' . implode(', ', $values) . ')';
 116                 $this->replacePlaceholders($sqlString, $parameters);
 117                 // debug($sqlString,-2);
 118                 $this->databaseHandle->sql_query($sqlString);
 119                 $this->checkSqlErrors();
 120                 $uid = $this->databaseHandle->sql_insert_id();
 121                 if (!$isRelation) {
 122                         $this->clearPageCache($tableName, $uid);
 123                 }
 124                 return (int)$uid;
 125         }
 126
 127         /**
 128          * Updates a row in the storage
 129          *
 130          * @param string $tableName The database table name
 131          * @param array $row The row to be updated
 132          * @param boolean $isRelation TRUE if we are currently inserting into a relation table, FALSE by default
 133          * @return void
 134          */
 135         public function updateRow($tableName, array $row, $isRelation = FALSE) {
 136                 if (!isset($row['uid'])) throw new InvalidArgumentException('The given row must contain a value for "uid".');
 137                 $uid = (int)$row['uid'];
 138                 unset($row['uid']);
 139                 $fields = array();
 140                 $parameters = array();
 141                 foreach ($row as $columnName => $value) {
 142                         $fields[] = $columnName . '=?';
 143                         $parameters[] = $value;
 144                 }
 145                 $parameters[] = $uid;
 146
 147                 $sqlString = 'UPDATE ' . $tableName . ' SET ' . implode(', ', $fields) . ' WHERE uid=?';
 148                 $this->replacePlaceholders($sqlString, $parameters);
 149                 // debug($sqlString,-2);
 150                 $returnValue = $this->databaseHandle->sql_query($sqlString);
 151                 $this->checkSqlErrors();
 152                 if (!$isRelation) {
 153                         $this->clearPageCache($tableName, $uid);
 154                 }
 155                 return $returnValue;
 156         }
 157
 158         /**
 159          * Deletes a row in the storage
 160          *
 161          * @param string $tableName The database table name
 162          * @param array $identifier An array of identifier array('fieldname' => value). This array will be transformed to a WHERE clause
 163          * @param boolean $isRelation TRUE if we are currently manipulating a relation table, FALSE by default
 164          * @return void
 165          */
 166         public function removeRow($tableName, array $identifier, $isRelation = FALSE) {
 167                 $statement = 'DELETE FROM ' . $tableName . ' WHERE ' . $this->parseIdentifier($identifier);
 168                 $this->replacePlaceholders($statement, $identifier);
 169                 if (!$isRelation) {
 170                         $this->clearPageCache($tableName, $uid, $isRelation);
 171                 }
 172                 $returnValue = $this->databaseHandle->sql_query($statement);
 173                 $this->checkSqlErrors();
 174                 return $returnValue;
 175         }
 176
 177         /**
 178          * Fetches row data from the database
 179          *
 180          * @param string $identifier The Identifier of the row to fetch
 181          * @param Tx_Extbase_Persistence_Mapper_DataMap $dataMap The Data Map
 182          * @return array|FALSE
 183          */
 184         public function getRowByIdentifier($tableName, array $identifier) {
 185                 $statement = 'SELECT * FROM ' . $tableName . ' WHERE ' . $this->parseIdentifier($identifier);
 186                 $this->replacePlaceholders($statement, $identifier);
 187                 // debug($statement,-2);
 188                 $res = $this->databaseHandle->sql_query($statement);
 189                 $this->checkSqlErrors();
 190                 $row = $this->databaseHandle->sql_fetch_assoc($res);
 191                 if ($row !== FALSE) {
 192                         return $row;
 193                 } else {
 194                         return FALSE;
 195                 }
 196         }
 197
 198         protected function parseIdentifier(array $identifier) {
 199                 $fieldNames = array_keys($identifier);
 200                 $suffixedFieldNames = array();
 201                 foreach ($fieldNames as $fieldName) {
 202                         $suffixedFieldNames[] = $fieldName . '=?';
 203                 }
 204                 return implode(' AND ', $suffixedFieldNames);
 205         }
 206
 207         /**
 208          * Returns an array with tuples matching the query.
 209          *
 210          * @param Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query
 211          * @return array The matching tuples
 212          */
 213         public function getRows(Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query) {
 214                 $constraint = $query->getConstraint();
 215                 if($constraint instanceof Tx_Extbase_Persistence_QOM_StatementInterface) {
 216                         if ($constraint->getLanguage() === Tx_Extbase_Persistence_QOM_QueryObjectModelInterface::TYPO3_SQL_MYSQL) {
 217                                 $statement = $constraint->getStatement();
 218                                 $parameters = $query->getBoundVariableValues();
 219                         } else {
 220                                 throw new Tx_Extbase_Persistence_Exception('Unsupported query language.', 1248701951);
 221                         }
 222                 } else {
 223                         $parameters = array();
 224                         $statement = $this->getStatement($query, $parameters);
 225                 }
 226                 $this->replacePlaceholders($statement, $parameters);
 227                 // debug($statement,-2);
 228                 $result = $this->databaseHandle->sql_query($statement);
 229                 $this->checkSqlErrors();
 230                 return $this->getRowsFromResult($query->getSource(), $result);
 231         }
 232
 233         /**
 234          * Returns the number of tuples matching the query.
 235          *
 236          * @param Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query
 237          * @return int The number of matching tuples
 238          */
 239         public function countRows(Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query) {
 240                 $constraint = $query->getConstraint();
 241                 if($constraint instanceof Tx_Extbase_Persistence_QOM_StatementInterface) throw new Tx_Extbase_Persistence_Storage_Exception_BadConstraint('Could not execute count on queries with a constraint of type Tx_Extbase_Persistence_QOM_StatementInterface', 1256661045);
 242                 $parameters = array();
 243                 $statementParts = $this->parseQuery($query, $parameters);
 244                 $statementParts['fields'] = array('COUNT(*)');
 245                 $statement = $this->buildStatement($statementParts, $parameters);
 246                 $this->replacePlaceholders($statement, $parameters);
 247                 $result = $this->databaseHandle->sql_query($statement);
 248                 $this->checkSqlErrors();
 249                 $tuples = $this->getRowsFromResult($query->getSource(), $result);
 250                 return current(current($tuples));
 251         }
 252
 253         /**
 254          * Returns the statement, ready to be executed.
 255          *
 256          * @param Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query
 257          * @return string The SQL statement
 258          */
 259         public function getStatement(Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query, array &$parameters) {
 260                 $statementParts = $this->parseQuery($query, $parameters);
 261                 $statement = $this->buildStatement($statementParts);
 262                 return $statement;
 263         }
 264
 265         /**
 266          * Parses the query and returns the SQL statement parts.
 267          *
 268          * @param Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query
 269          * @return array The SQL statement parts
 270          */
 271         public function parseQuery(Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query, array &$parameters) {
 272                 $sql = array();
 273                 $sql['tables'] = array();
 274                 $sql['fields'] = array();
 275                 $sql['where'] = array();
 276                 $sql['additionalWhereClause'] = array();
 277                 $sql['orderings'] = array();
 278                 $sql['limit'] = array();
 279
 280                 $source = $query->getSource();
 281
 282                 $this->parseSource($query, $source, $sql, $parameters);
 283                 $this->parseConstraint($query->getConstraint(), $source, $sql, $parameters, $query->getBoundVariableValues());
 284                 $this->parseOrderings($query->getOrderings(), $source, $sql);
 285                 $this->parseLimitAndOffset($query->getLimit(), $query->getOffset(), $sql);
 286
 287                 return $sql;
 288         }
 289
 290         /**
 291          * Returns the statement, ready to be executed.
 292          *
 293          * @param array $sql The SQL statement parts
 294          * @return string The SQL statement
 295          */
 296         public function buildStatement(array $sql) {
 297                 $statement = 'SELECT ' . implode(',', $sql['fields']) . ' FROM ' . implode(' ', $sql['tables']);
 298                 if (!empty($sql['where'])) {
 299                         $statement .= ' WHERE ' . implode('', $sql['where']);
 300                         if (!empty($sql['additionalWhereClause'])) {
 301                                 $statement .= ' AND ' . implode(' AND ', $sql['additionalWhereClause']);
 302                         }
 303                 } elseif (!empty($sql['additionalWhereClause'])) {
 304                         $statement .= ' WHERE ' . implode(' AND ', $sql['additionalWhereClause']);
 305                 }
 306                 if (!empty($sql['orderings'])) {
 307                         $statement .= ' ORDER BY ' . implode(', ', $sql['orderings']);
 308                 }
 309                 if (!empty($sql['limit'])) {
 310                         $statement .= ' LIMIT ' . $sql['limit'];
 311                 }
 312                 return $statement;
 313         }
 314
 315         /**
 316          * Checks if a Value Object equal to the given Object exists in the data base
 317          *
 318          * @param Tx_Extbase_DomainObject_AbstractValueObject $object The Value Object
 319          * @return array The matching uid
 320          */
 321         public function getUidOfAlreadyPersistedValueObject(Tx_Extbase_DomainObject_AbstractValueObject $object) {
 322                 $fields = array();
 323                 $parameters = array();
 324                 $dataMap = $this->dataMapper->getDataMap(get_class($object));
 325                 $properties = $object->_getProperties();
 326                 foreach ($properties as $propertyName => $propertyValue) {
 327                         // FIXME We couple the Backend to the Entity implementation (uid, isClone); changes there breaks this method
 328                         if ($dataMap->isPersistableProperty($propertyName) && ($propertyName !== 'uid')  && ($propertyName !== 'pid') && ($propertyName !== 'isClone')) {
 329                                 if ($propertyValue === NULL) {
 330                                         $fields[] = $dataMap->getColumnMap($propertyName)->getColumnName() . ' IS NULL';
 331                                 } else {
 332                                         $fields[] = $dataMap->getColumnMap($propertyName)->getColumnName() . '=?';
 333                                         $parameters[] = $dataMap->convertPropertyValueToFieldValue($propertyValue);
 334                                 }
 335                         }
 336                 }
 337                 $sql = array();
 338                 $sql['additionalWhereClause'] = array();
 339
 340                 $tableName = $dataMap->getTableName();
 341                 $this->addEnableFieldsStatement($tableName, $sql);
 342
 343                 $statement = 'SELECT * FROM ' . $tableName;
 344                 $statement .= ' WHERE ' . implode(' AND ', $fields);
 345                 if (!empty($sql['additionalWhereClause'])) {
 346                         $statement .= ' AND ' . implode(' AND ', $sql['additionalWhereClause']);
 347                 }
 348                 $this->replacePlaceholders($statement, $parameters);
 349                 // debug($statement,-2);
 350                 $res = $this->databaseHandle->sql_query($statement);
 351                 $this->checkSqlErrors();
 352                 $row = $this->databaseHandle->sql_fetch_assoc($res);
 353                 if ($row !== FALSE) {
 354                         return (int)$row['uid'];
 355                 } else {
 356                         return FALSE;
 357                 }
 358         }
 359
 360         /**
 361          * Transforms a Query Source into SQL and parameter arrays
 362          *
 363          * @param Tx_Extbase_Persistence_QOM_QueryObjectModel $query
 364          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 365          * @param array &$sql
 366          * @param array &$parameters
 367          * @return void
 368          */
 369         protected function parseSource(Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql, array &$parameters) {
 370                 if ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 371                         $tableName = $source->getSelectorName();
 372                         $sql['fields'][] = $tableName . '.*';
 373                         $sql['tables'][] = $tableName;
 374                         $querySettings = $query->getQuerySettings();
 375                         if ($querySettings instanceof Tx_Extbase_Persistence_Typo3QuerySettingsInterface) {
 376                                 if ($querySettings->getRespectEnableFields()) {
 377                                         $this->addEnableFieldsStatement($tableName, $sql);
 378                                 }
 379                                 if ($querySettings->getRespectStoragePage()) {
 380                                         $this->addPageIdStatement($tableName, $sql);
 381                                 }
 382                         }
 383                 } elseif ($source instanceof Tx_Extbase_Persistence_QOM_JoinInterface) {
 384                         $this->parseJoin($query, $source, $sql);
 385                 }
 386         }
 387
 388         /**
 389          * Transforms a Join into SQL and parameter arrays
 390          *
 391          * @param Tx_Extbase_Persistence_QOM_QueryObjectModel $query The Query Object Model
 392          * @param Tx_Extbase_Persistence_QOM_JoinInterface $join The join
 393          * @param array &$sql The query parts
 394          * @return void
 395          */
 396         protected function parseJoin(Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query, Tx_Extbase_Persistence_QOM_JoinInterface $join, array &$sql) {
 397                 $leftSource = $join->getLeft();
 398                 $leftTableName = $leftSource->getSelectorName();
 399                 $rightSource = $join->getRight();
 400                 $rightTableName = $rightSource->getSelectorName();
 401
 402                 $sql['fields'][] = $leftTableName . '.*';
 403                 $sql['fields'][] = $rightTableName . '.*';
 404
 405                 // TODO Implement support for different join types and nested joins
 406                 $sql['tables'][] = $leftTableName . ' LEFT JOIN ' . $rightTableName;
 407
 408                 $joinCondition = $join->getJoinCondition();
 409                 // TODO Check the parsing of the join
 410                 if ($joinCondition instanceof Tx_Extbase_Persistence_QOM_EquiJoinCondition) {
 411                         // TODO Discuss, if we should use $leftSource instead of $selector1Name
 412                         $column1Name = $this->dataMapper->convertPropertyNameToColumnName($joinCondition->getProperty1Name(), $leftSource->getNodeTypeName());
 413                         $column2Name = $this->dataMapper->convertPropertyNameToColumnName($joinCondition->getProperty2Name(), $rightSource->getNodeTypeName());
 414                         $sql['tables'][] = 'ON ' . $joinCondition->getSelector1Name() . '.' . $column1Name . ' = ' . $joinCondition->getSelector2Name() . '.' . $column2Name;
 415                 }
 416                 // TODO Implement childtableWhere
 417
 418                 $querySettings = $query->getQuerySettings();
 419                 if ($querySettings instanceof Tx_Extbase_Persistence_Typo3QuerySettingsInterface) {
 420                         if ($querySettings->getRespectEnableFields()) {
 421                                 $this->addEnableFieldsStatement($leftTableName, $sql);
 422                                 $this->addEnableFieldsStatement($rightTableName, $sql);
 423                         }
 424                         if ($querySettings->getRespectStoragePage()) {
 425                                 $this->addPageIdStatement($leftTableName, $sql);
 426                                 $this->addPageIdStatement($rightTableName, $sql);
 427                         }
 428                 }
 429         }
 430
 431         /**
 432          * Transforms a constraint into SQL and parameter arrays
 433          *
 434          * @param Tx_Extbase_Persistence_QOM_ConstraintInterface $constraint The constraint
 435          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 436          * @param array &$sql The query parts
 437          * @param array &$parameters The parameters that will replace the markers
 438          * @param array $boundVariableValues The bound variables in the query (key) and their values (value)
 439          * @return void
 440          */
 441         protected function parseConstraint(Tx_Extbase_Persistence_QOM_ConstraintInterface $constraint = NULL, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql, array &$parameters, array $boundVariableValues) {
 442                 if ($constraint === NULL) return;
 443                 if ($constraint instanceof Tx_Extbase_Persistence_QOM_AndInterface) {
 444                         $sql['where'][] = '(';
 445                         $this->parseConstraint($constraint->getConstraint1(), $source, $sql, $parameters, $boundVariableValues);
 446                         $sql['where'][] = ' AND ';
 447                         $this->parseConstraint($constraint->getConstraint2(), $source, $sql, $parameters, $boundVariableValues);
 448                         $sql['where'][] = ')';
 449                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_OrInterface) {
 450                         $sql['where'][] = '(';
 451                         $this->parseConstraint($constraint->getConstraint1(), $source, $sql, $parameters, $boundVariableValues);
 452                         $sql['where'][] = ' OR ';
 453                         $this->parseConstraint($constraint->getConstraint2(), $source, $sql, $parameters, $boundVariableValues);
 454                         $sql['where'][] = ')';
 455                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_NotInterface) {
 456                         $sql['where'][] = 'NOT (';
 457                         $this->parseConstraint($constraint->getConstraint(), $source, $sql, $parameters, $boundVariableValues);
 458                         $sql['where'][] = ')';
 459                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_ComparisonInterface) {
 460                         $this->parseComparison($constraint, $source, $sql, $parameters, $boundVariableValues);
 461                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_RelatedInterface) {
 462                         $this->parseRelated($constraint, $sql, $parameters, $boundVariableValues);
 463                 }
 464         }
 465
 466         /**
 467          * Parse a Comparison into SQL and parameter arrays.
 468          *
 469          * @param Tx_Extbase_Persistence_QOM_ComparisonInterface $comparison The comparison to parse
 470          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 471          * @param array &$sql SQL query parts to add to
 472          * @param array &$parameters Parameters to bind to the SQL
 473          * @param array $boundVariableValues The bound variables in the query and their values
 474          * @return void
 475          */
 476         protected function parseComparison(Tx_Extbase_Persistence_QOM_ComparisonInterface $comparison, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql, array &$parameters, array $boundVariableValues) {
 477                 if (!($comparison->getOperand2() instanceof Tx_Extbase_Persistence_QOM_BindVariableValueInterface)) throw new Tx_Extbase_Persistence_Exception('Type of operand is not supported', 1247581135);
 478
 479                 $value = $boundVariableValues[$comparison->getOperand2()->getBindVariableName()];
 480                 $operator = $comparison->getOperator();
 481                 if ($value === NULL) {
 482                         if ($operator === Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_EQUAL_TO) {
 483                                 $operator = self::OPERATOR_EQUAL_TO_NULL;
 484                         } elseif ($operator === Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_NOT_EQUAL_TO) {
 485                                 $operator = self::OPERATOR_NOT_EQUAL_TO_NULL;
 486                         }
 487                 } elseif (is_array($value)) {
 488                         if ($operator === Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_EQUAL_TO) {
 489                                 $operator = self::OPERATOR_IN;
 490                         } elseif ($operator === Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_NOT_EQUAL_TO) {
 491                                 $operator = self::OPERATOR_NOT_IN;
 492                         }
 493                 }
 494                 $parameters[] = $value;
 495
 496                 $this->parseDynamicOperand($comparison->getOperand1(), $operator, $source, $sql, $parameters);
 497         }
 498
 499         /**
 500          * Parse a DynamicOperand into SQL and parameter arrays.
 501          *
 502          * @param Tx_Extbase_Persistence_QOM_DynamicOperandInterface $operand
 503          * @param string $operator One of the JCR_OPERATOR_* constants
 504          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 505          * @param array &$sql The query parts
 506          * @param array &$parameters The parameters that will replace the markers
 507          * @param string $valueFunction an optional SQL function to apply to the operand value
 508          * @return void
 509          */
 510         protected function parseDynamicOperand(Tx_Extbase_Persistence_QOM_DynamicOperandInterface $operand, $operator, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql, array &$parameters, $valueFunction = NULL) {
 511                 if ($operand instanceof Tx_Extbase_Persistence_QOM_LowerCaseInterface) {
 512                         $this->parseDynamicOperand($operand->getOperand(), $operator, $source, $sql, $parameters, 'LOWER');
 513                 } elseif ($operand instanceof Tx_Extbase_Persistence_QOM_UpperCaseInterface) {
 514                         $this->parseDynamicOperand($operand->getOperand(), $operator, $source, $sql, $parameters, 'UPPER');
 515                 } elseif ($operand instanceof Tx_Extbase_Persistence_QOM_PropertyValueInterface) {
 516                         $tableName = $operand->getSelectorName();
 517                         // FIXME Discuss the translation from propertyName to columnName
 518                         if ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 519                                 $className = $source->getNodeTypeName();
 520                         } else {
 521                                 $className = '';
 522                         }
 523                         $columnName = $this->dataMapper->convertPropertyNameToColumnName($operand->getPropertyName(), $className);
 524                         $operator = $this->resolveOperator($operator);
 525
 526                         if ($valueFunction === NULL) {
 527                                 $constraintSQL .= (!empty($tableName) ? $tableName . '.' : '') . $columnName .  ' ' . $operator . ' ?';
 528                         } else {
 529                                 $constraintSQL .= $valueFunction . '(' . (!empty($tableName) ? $tableName . '.' : '') . $columnName .  ' ' . $operator . ' ?';
 530                         }
 531
 532                         $sql['where'][] = $constraintSQL;
 533                 }
 534         }
 535
 536         /**
 537          * Returns the SQL operator for the given JCR operator type.
 538          *
 539          * @param string $operator One of the JCR_OPERATOR_* constants
 540          * @return string an SQL operator
 541          */
 542         protected function resolveOperator($operator) {
 543                 switch ($operator) {
 544                         case self::OPERATOR_EQUAL_TO_NULL:
 545                                 $operator = 'IS';
 546                                 break;
 547                         case self::OPERATOR_NOT_EQUAL_TO_NULL:
 548                                 $operator = 'IS NOT';
 549                                 break;
 550                         case self::OPERATOR_IN:
 551                                 $operator = 'IN';
 552                                 break;
 553                         case self::OPERATOR_NOT_IN:
 554                                 $operator = 'NOT IN';
 555                                 break;
 556                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_EQUAL_TO:
 557                                 $operator = '=';
 558                                 break;
 559                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_NOT_EQUAL_TO:
 560                                 $operator = '!=';
 561                                 break;
 562                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_LESS_THAN:
 563                                 $operator = '<';
 564                                 break;
 565                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_LESS_THAN_OR_EQUAL_TO:
 566                                 $operator = '<=';
 567                                 break;
 568                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_GREATER_THAN:
 569                                 $operator = '>';
 570                                 break;
 571                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_GREATER_THAN_OR_EQUAL_TO:
 572                                 $operator = '>=';
 573                                 break;
 574                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_LIKE:
 575                                 $operator = 'LIKE';
 576                                 break;
 577                         default:
 578                                 throw new Tx_Extbase_Persistence_Exception('Unsupported operator encountered.', 1242816073);
 579                 }
 580
 581                 return $operator;
 582         }
 583
 584         /**
 585          * Replace query placeholders in a query part by the given
 586          * parameters.
 587          *
 588          * @param string $sqlString The query part with placeholders
 589          * @param array $parameters The parameters
 590          * @return string The query part with replaced placeholders
 591          */
 592         protected function replacePlaceholders(&$sqlString, array $parameters) {
 593                 // TODO profile this method again
 594                 if (substr_count($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);
 595                 $offset = 0;
 596                 foreach ($parameters as $parameter) {
 597                         $markPosition = strpos($sqlString, '?', $offset);
 598                         if ($markPosition !== FALSE) {
 599                                 if ($parameter === NULL) {
 600                                         $parameter = 'NULL';
 601                                 } elseif (is_array($parameter)) {
 602                                         $items = array();
 603                                         foreach ($parameter as $item) {
 604                                                 $items[] = $this->databaseHandle->fullQuoteStr($item, 'foo');
 605                                         }
 606                                         $parameter = '(' . implode(',', $items) . ')';
 607                                 } else {
 608                                         $parameter = $this->databaseHandle->fullQuoteStr($parameter, 'foo'); // FIXME This may not work with DBAL; check this
 609                                 }
 610                                 $sqlString = substr($sqlString, 0, $markPosition) . $parameter . substr($sqlString, $markPosition + 1);
 611                         }
 612                         $offset = $markPosition + strlen($parameter);
 613                 }
 614         }
 615
 616         /**
 617          * Builds the enable fields statement
 618          *
 619          * @param string $tableName The database table name
 620          * @param array &$sql The query parts
 621          * @return void
 622          */
 623         protected function addEnableFieldsStatement($tableName, array &$sql) {
 624                 if (is_array($GLOBALS['TCA'][$tableName]['ctrl'])) {
 625                         if (TYPO3_MODE === 'FE') {
 626                                 $statement = $GLOBALS['TSFE']->sys_page->enableFields($tableName);
 627                         } else { // TYPO3_MODE === 'BE'
 628                                 $statement = t3lib_BEfunc::deleteClause($tableName);
 629                                 $statement .= t3lib_BEfunc::BEenableFields($tableName);
 630                         }
 631                         if(!empty($statement)) {
 632                                 $statement = substr($statement, 5);
 633                                 $sql['additionalWhereClause'][] = $statement;
 634                         }
 635                 }
 636         }
 637
 638         /**
 639          * Builds the page ID checking statement
 640          *
 641          * @param string $tableName The database table name
 642          * @param array &$sql The query parts
 643          * @return void
 644          */
 645         protected function addPageIdStatement($tableName, array &$sql) {
 646                 if (empty($this->tableInformationCache[$tableName]['columnNames'])) {
 647                         $this->tableInformationCache[$tableName]['columnNames'] = $this->databaseHandle->admin_get_fields($tableName);
 648                 }
 649                 if (is_array($GLOBALS['TCA'][$tableName]['ctrl']) && array_key_exists('pid', $this->tableInformationCache[$tableName]['columnNames'])) {
 650                         $extbaseFrameworkConfiguration = Tx_Extbase_Dispatcher::getExtbaseFrameworkConfiguration();
 651                         $sql['additionalWhereClause'][] = $tableName . '.pid IN (' . implode(', ', t3lib_div::intExplode(',', $extbaseFrameworkConfiguration['persistence']['storagePid'])) . ')';
 652                 }
 653         }
 654
 655         /**
 656          * Transforms orderings into SQL.
 657          *
 658          * @param array $orderings Ann array of orderings (Tx_Extbase_Persistence_QOM_Ordering)
 659          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 660          * @param array &$sql The query parts
 661          * @return void
 662          */
 663         protected function parseOrderings(array $orderings, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql) {
 664                 foreach ($orderings as $ordering) {
 665                         $operand = $ordering->getOperand();
 666                         $order = $ordering->getOrder();
 667                         if ($operand instanceof Tx_Extbase_Persistence_QOM_PropertyValue) {
 668                                 switch ($order) {
 669                                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_ORDER_ASCENDING:
 670                                                 $order = 'ASC';
 671                                                 break;
 672                                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_ORDER_DESCENDING:
 673                                                 $order = 'DESC';
 674                                                 break;
 675                                         default:
 676                                                 throw new Tx_Extbase_Persistence_Exception_UnsupportedOrder('Unsupported order encountered.', 1242816074);
 677                                 }
 678                                 $tableName = $operand->getSelectorName();
 679                                 $className = '';
 680                                 if ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 681                                         $className = $source->getNodeTypeName();
 682                                 }
 683                                 $columnName = $this->dataMapper->convertPropertyNameToColumnName($operand->getPropertyName(), $className);
 684                                 if (strlen($tableName) > 0) {
 685                                         $sql['orderings'][] = $tableName . '.' . $columnName . ' ' . $order;
 686                                 } else {
 687                                         $sql['orderings'][] = $columnName . ' ' . $order;
 688                                 }
 689                         }
 690                 }
 691         }
 692
 693         /**
 694          * Transforms limit and offset into SQL
 695          *
 696          * @param int $limit
 697          * @param int $offset
 698          * @param array &$sql
 699          * @return void
 700          */
 701         protected function parseLimitAndOffset($limit, $offset, array &$sql) {
 702                 if ($limit !== NULL && $offset !== NULL) {
 703                         $sql['limit'] = $offset . ', ' . $limit;
 704                 } elseif ($limit !== NULL) {
 705                         $sql['limit'] = $limit;
 706                 }
 707         }
 708
 709         /**
 710          * Transforms a Resource from a database query to an array of rows. Performs the language and
 711          * workspace overlay before.
 712          *
 713          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source (selector od join)
 714          * @param resource $result The result
 715          * @return array The result as an array of rows (tuples)
 716          */
 717         protected function getRowsFromResult(Tx_Extbase_Persistence_QOM_SourceInterface $source, $result) {
 718                 $rows = array();
 719                 while ($row = $this->databaseHandle->sql_fetch_assoc($result)) {
 720                         if      ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 721                                 $row = $this->doLanguageAndWorkspaceOverlay($source->getSelectorName(), $row);
 722                         } else if ($source instanceof Tx_Extbase_Persistence_QOM_JoinInterface) {
 723                                 $row = $this->doLanguageAndWorkspaceOverlay($source->getLeft()->getSelectorName(), $row);
 724                         }
 725                         if (is_array($row)) {
 726                                 // TODO Check if this is necessary, maybe the last line is enough
 727                                 $arrayKeys = range(0,count($row));
 728                                 array_fill_keys($arrayKeys, $row);
 729                                 $rows[] = $row;
 730                         }
 731                 }
 732                 return $rows;
 733         }
 734
 735         /**
 736          * Performs workspace and language overlay on the given row array. The language and workspace id is automatically
 737          * detected (depending on FE or BE context). You can also explicitly set the language/workspace id.
 738          *
 739          * @param Tx_Extbase_Persistence_Mapper_DataMap $dataMap
 740          * @param array $row The row array (as reference)
 741          * @param string $languageUid The language id
 742          * @param string $workspaceUidUid The workspace id
 743          * @return void
 744          */
 745         protected function doLanguageAndWorkspaceOverlay($tableName, array $row, $languageUid = NULL, $workspaceUid = NULL) {
 746                 if (!($this->pageSelectObject instanceof t3lib_pageSelect)) {
 747                         if (TYPO3_MODE == 'FE') {
 748                                 if (is_object($GLOBALS['TSFE'])) {
 749                                         $this->pageSelectObject = $GLOBALS['TSFE']->sys_page;
 750                                 } else {
 751                                         require_once(PATH_t3lib . 'class.t3lib_page.php');
 752                                         $this->pageSelectObject = t3lib_div::makeInstance('t3lib_pageSelect');
 753                                 }
 754                         } else {
 755                                 require_once(PATH_t3lib . 'class.t3lib_page.php');
 756                                 $this->pageSelectObject = t3lib_div::makeInstance( 't3lib_pageSelect' );
 757                         }
 758                 }
 759                 if (is_object($GLOBALS['TSFE'])) {
 760                         if ($languageUid === NULL) {
 761                                 $languageUid = $GLOBALS['TSFE']->sys_language_uid;
 762                         }
 763                         if ($workspaceUid !== NULL) {
 764                                 $this->pageSelectObject->versioningWorkspaceId = $workspaceUid;
 765                         }
 766                 } else {
 767                         if ($languageUid === NULL) {
 768                                 $languageUid = intval(t3lib_div::_GP('L'));
 769                         }
 770                         if ($workspaceUid === NULL) {
 771                                 $workspaceUid = $GLOBALS['BE_USER']->workspace;
 772                         }
 773                         $this->pageSelectObject->versioningWorkspaceId = $workspaceUid;
 774                 }
 775                 $this->pageSelectObject->versionOL($tableName, $row, TRUE);
 776                 $row = $this->pageSelectObject->getRecordOverlay($tableName, $row, $languageUid, ''); //'hideNonTranslated'
 777                 // TODO Skip if empty languageoverlay (languagevisibility)
 778                 return $row;
 779         }
 780
 781         /**
 782          * Checks if there are SQL errors in the last query, and if yes, throw an exception.
 783          *
 784          * @return void
 785          * @throws Tx_Extbase_Persistence_Storage_Exception_SqlError
 786          */
 787         protected function checkSqlErrors() {
 788                 $error = $this->databaseHandle->sql_error();
 789                 if ($error !== '') {
 790                         throw new Tx_Extbase_Persistence_Storage_Exception_SqlError($error, 1247602160);
 791                 }
 792         }
 793
 794         /**
 795          * Clear the TYPO3 page cache for the given record.
 796          * If the record lies on a page, then we clear the cache of this page.
 797          * If the record has no PID column, we clear the cache of the current page as best-effort.
 798          *
 799          * Much of this functionality is taken from t3lib_tcemain::clear_cache() which unfortunately only works with logged-in BE user.
 800          *
 801          * @param $tableName Table name of the record
 802          * @param $uid UID of the record
 803          * @return void
 804          */
 805         protected function clearPageCache($tableName, $uid) {
 806                 $extbaseSettings = Tx_Extbase_Dispatcher::getExtbaseFrameworkConfiguration();
 807                 if (isset($extbaseSettings['persistence']['enableAutomaticCacheClearing']) && $extbaseSettings['persistence']['enableAutomaticCacheClearing'] === '1') {
 808                 } else {
 809                         // if disabled, return
 810                         return;
 811                 }
 812
 813                 $pageIdsToClear = array();
 814                 $storagePage = NULL;
 815
 816                 $columns = $this->databaseHandle->admin_get_fields($tableName);
 817                 if (array_key_exists('pid', $columns)) {
 818                         $result = $this->databaseHandle->exec_SELECTquery('pid', $tableName, 'uid='.intval($uid));
 819                         if ($row = $this->databaseHandle->sql_fetch_assoc($result))     {
 820                                 $storagePage = $row['pid'];
 821                                 $pageIdsToClear[] = $storagePage;
 822                         }
 823                 } elseif (isset($GLOBALS['TSFE'])) {
 824                         // No PID column - we can do a best-effort to clear the cache of the current page if in FE
 825                         $storagePage = $GLOBALS['TSFE']->id;
 826                         $pageIdsToClear[] = $storagePage;
 827                 }
 828
 829                 if ($storagePage === NULL) {
 830                         return;
 831                 }
 832                 if (!isset($this->pageTSConfigCache[$storagePage])) {
 833                         $this->pageTSConfigCache[$storagePage] = t3lib_BEfunc::getPagesTSconfig($storagePage);
 834                 }
 835                 if (isset($this->pageTSConfigCache[$storagePage]['TCEMAIN.']['clearCacheCmd'])) {
 836                         $clearCacheCommands = t3lib_div::trimExplode(',',strtolower($this->pageTSConfigCache[$storagePage]['TCEMAIN.']['clearCacheCmd']),1);
 837                         $clearCacheCommands = array_unique($clearCacheCommands);
 838                         foreach ($clearCacheCommands as $clearCacheCommand)     {
 839                                 if (t3lib_div::testInt($clearCacheCommand))     {
 840                                         $pageIdsToClear[] = $clearCacheCommand;
 841                                 }
 842                         }
 843                 }
 844
 845                 // TODO check if we can hand this over to the Dispatcher to clear the page only once, this will save around 10% time while inserting and updating
 846                 Tx_Extbase_Utility_Cache::clearPageCache($pageIdsToClear);
 847         }
 848 }
 849
 850 ?>