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          * A first-level TypoScript configuration cache
  61          *
  62          * @var array
  63          */
  64         protected $pageTSConfigCache = array();
  65
  66         /**
  67          * Caches information about tables (esp. the existing column names)
  68          *
  69          * @var array
  70          */
  71         protected $tableInformationCache = array();
  72
  73         /**
  74          * Constructs this Storage Backend instance
  75          *
  76          * @param t3lib_db $databaseHandle The database handle
  77          */
  78         public function __construct($databaseHandle) {
  79                 $this->databaseHandle = $databaseHandle;
  80         }
  81
  82         /**
  83          * Injects the DataMapper to map nodes to objects
  84          *
  85          * @param Tx_Extbase_Persistence_Mapper_DataMapper $dataMapper
  86          * @return void
  87          */
  88         public function injectDataMapper(Tx_Extbase_Persistence_Mapper_DataMapper $dataMapper) {
  89                 $this->dataMapper = $dataMapper;
  90         }
  91
  92         /**
  93          * Adds a row to the storage
  94          *
  95          * @param string $tableName The database table name
  96          * @param array $row The row to be inserted
  97          * @param boolean $isRelation TRUE if we are currently inserting into a relation table, FALSE by default
  98          * @return int The uid of the inserted row
  99          */
 100         public function addRow($tableName, array $row, $isRelation = FALSE) {
 101                 $fields = array();
 102                 $values = array();
 103                 $parameters = array();
 104                 if (isset($row['uid'])) {
 105                         unset($row['uid']);
 106                 }
 107                 foreach ($row as $columnName => $value) {
 108                         $fields[] = $columnName;
 109                         $values[] = '?';
 110                         $parameters[] = $value;
 111                 }
 112
 113                 $sqlString = 'INSERT INTO ' . $tableName . ' (' . implode(', ', $fields) . ') VALUES (' . implode(', ', $values) . ')';
 114                 $this->replacePlaceholders($sqlString, $parameters);
 115                 // debug($sqlString,-2);
 116                 $this->databaseHandle->sql_query($sqlString);
 117                 $this->checkSqlErrors();
 118                 $uid = $this->databaseHandle->sql_insert_id();
 119                 if (!$isRelation) {
 120                         $this->clearPageCache($tableName, $uid);
 121                 }
 122                 return (int)$uid;
 123         }
 124
 125         /**
 126          * Updates a row in the storage
 127          *
 128          * @param string $tableName The database table name
 129          * @param array $row The row to be updated
 130          * @param boolean $isRelation TRUE if we are currently inserting into a relation table, FALSE by default
 131          * @return void
 132          */
 133         public function updateRow($tableName, array $row, $isRelation = FALSE) {
 134                 if (!isset($row['uid'])) throw new InvalidArgumentException('The given row must contain a value for "uid".');
 135                 $uid = (int)$row['uid'];
 136                 unset($row['uid']);
 137                 $fields = array();
 138                 $parameters = array();
 139                 foreach ($row as $columnName => $value) {
 140                         $fields[] = $columnName . '=?';
 141                         $parameters[] = $value;
 142                 }
 143                 $parameters[] = $uid;
 144
 145                 $sqlString = 'UPDATE ' . $tableName . ' SET ' . implode(', ', $fields) . ' WHERE uid=?';
 146                 $this->replacePlaceholders($sqlString, $parameters);
 147                 // debug($sqlString,-2);
 148                 $returnValue = $this->databaseHandle->sql_query($sqlString);
 149                 $this->checkSqlErrors();
 150                 if (!$isRelation) {
 151                         $this->clearPageCache($tableName, $uid);
 152                 }
 153                 return $returnValue;
 154         }
 155
 156         /**
 157          * Deletes a row in the storage
 158          *
 159          * @param string $tableName The database table name
 160          * @param array $identifier An array of identifier array('fieldname' => value). This array will be transformed to a WHERE clause
 161          * @param boolean $isRelation TRUE if we are currently manipulating a relation table, FALSE by default
 162          * @return void
 163          */
 164         public function removeRow($tableName, array $identifier, $isRelation = FALSE) {
 165                 $statement = 'DELETE FROM ' . $tableName . ' WHERE ' . $this->parseIdentifier($identifier);
 166                 $this->replacePlaceholders($statement, $identifier);
 167                 if (!$isRelation) {
 168                         $this->clearPageCache($tableName, $uid, $isRelation);
 169                 }
 170                 $returnValue = $this->databaseHandle->sql_query($statement);
 171                 $this->checkSqlErrors();
 172                 return $returnValue;
 173         }
 174
 175         /**
 176          * Fetches row data from the database
 177          *
 178          * @param string $identifier The Identifier of the row to fetch
 179          * @param Tx_Extbase_Persistence_Mapper_DataMap $dataMap The Data Map
 180          * @return array|FALSE
 181          */
 182         public function getRowByIdentifier($tableName, array $identifier) {
 183                 $statement = 'SELECT * FROM ' . $tableName . ' WHERE ' . $this->parseIdentifier($identifier);
 184                 $this->replacePlaceholders($statement, $identifier);
 185                 // debug($statement,-2);
 186                 $res = $this->databaseHandle->sql_query($statement);
 187                 $this->checkSqlErrors();
 188                 $row = $this->databaseHandle->sql_fetch_assoc($res);
 189                 if ($row !== FALSE) {
 190                         return $row;
 191                 } else {
 192                         return FALSE;
 193                 }
 194         }
 195
 196         protected function parseIdentifier(array $identifier) {
 197                 $fieldNames = array_keys($identifier);
 198                 $suffixedFieldNames = array();
 199                 foreach ($fieldNames as $fieldName) {
 200                         $suffixedFieldNames[] = $fieldName . '=?';
 201                 }
 202                 return implode(' AND ', $suffixedFieldNames);
 203         }
 204
 205         /**
 206          * Returns the object data matching the $query.
 207          *
 208          * @param Tx_Extbase_Persistence_QueryInterface $query
 209          * @return array
 210          * @author Karsten Dambekalns <karsten@typo3.org>
 211          */
 212         public function getObjectDataByQuery(Tx_Extbase_Persistence_QueryInterface $query) {
 213                 $parameters = array();
 214
 215                 $statement = $query->getStatement();
 216                 if($statement instanceof Tx_Extbase_Persistence_QOM_Statement) {
 217                         $sql = $statement->getStatement();
 218                         $parameters = $statement->getBoundVariables();
 219                 } else {
 220                         $parameters = array();
 221                         $statementParts = $this->parseQuery($query, $parameters);
 222                         $sql = $this->buildQuery($statementParts, $parameters);
 223                 }
 224                 $this->replacePlaceholders($sql, $parameters);
 225                 // debug($sql,-2);
 226                 $result = $this->databaseHandle->sql_query($sql);
 227                 $this->checkSqlErrors();
 228                 $rows = $this->getRowsFromResult($query->getSource(), $result);
 229                 $rows = $this->doLanguageAndWorkspaceOverlay($query->getSource(), $rows);
 230
 231                 // $objectData = $this->processObjectRecords($statementHandle);
 232                 return $rows;
 233         }
 234
 235         /**
 236          * Returns the number of tuples matching the query.
 237          *
 238          * @param Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query
 239          * @return int The number of matching tuples
 240          */
 241         public function getObjectCountByQuery(Tx_Extbase_Persistence_QueryInterface $query) {
 242                 $constraint = $query->getConstraint();
 243                 if($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);
 244                 $parameters = array();
 245                 $statementParts = $this->parseQuery($query, $parameters);
 246                 $statementParts['fields'] = array('COUNT(*)');
 247                 $statement = $this->buildQuery($statementParts, $parameters);
 248                 $this->replacePlaceholders($statement, $parameters);
 249                 // debug($sql,-2);
 250                 $result = $this->databaseHandle->sql_query($statement);
 251                 $this->checkSqlErrors();
 252                 $rows = $this->getRowsFromResult($query->getSource(), $result);
 253                 return current(current($rows));
 254         }
 255
 256         /**
 257          * Parses the query and returns the SQL statement parts.
 258          *
 259          * @param Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query
 260          * @return array The SQL statement parts
 261          */
 262         public function parseQuery(Tx_Extbase_Persistence_Query $query, array &$parameters) {
 263                 $sql = array();
 264                 $sql['tables'] = array();
 265                 $sql['fields'] = array();
 266                 $sql['where'] = array();
 267                 $sql['additionalWhereClause'] = array();
 268                 $sql['orderings'] = array();
 269                 $sql['limit'] = array();
 270
 271                 $source = $query->getSource();
 272
 273                 $this->parseSource($query, $source, $sql, $parameters);
 274                 $this->parseConstraint($query->getConstraint(), $source, $sql, $parameters);
 275                 $this->parseOrderings($query->getOrderings(), $source, $sql);
 276                 $this->parseLimitAndOffset($query->getLimit(), $query->getOffset(), $sql);
 277
 278                 return $sql;
 279         }
 280
 281         /**
 282          * Returns the statement, ready to be executed.
 283          *
 284          * @param array $sql The SQL statement parts
 285          * @return string The SQL statement
 286          */
 287         public function buildQuery(array $sql) {
 288                 $statement = 'SELECT ' . implode(',', $sql['fields']) . ' FROM ' . implode(' ', $sql['tables']);
 289                 if (!empty($sql['where'])) {
 290                         $statement .= ' WHERE ' . implode('', $sql['where']);
 291                         if (!empty($sql['additionalWhereClause'])) {
 292                                 $statement .= ' AND ' . implode(' AND ', $sql['additionalWhereClause']);
 293                         }
 294                 } elseif (!empty($sql['additionalWhereClause'])) {
 295                         $statement .= ' WHERE ' . implode(' AND ', $sql['additionalWhereClause']);
 296                 }
 297                 if (!empty($sql['orderings'])) {
 298                         $statement .= ' ORDER BY ' . implode(', ', $sql['orderings']);
 299                 }
 300                 if (!empty($sql['limit'])) {
 301                         $statement .= ' LIMIT ' . $sql['limit'];
 302                 }
 303                 return $statement;
 304         }
 305
 306         /**
 307          * Checks if a Value Object equal to the given Object exists in the data base
 308          *
 309          * @param Tx_Extbase_DomainObject_AbstractValueObject $object The Value Object
 310          * @return array The matching uid
 311          */
 312         public function getUidOfAlreadyPersistedValueObject(Tx_Extbase_DomainObject_AbstractValueObject $object) {
 313                 $fields = array();
 314                 $parameters = array();
 315                 $dataMap = $this->dataMapper->getDataMap(get_class($object));
 316                 $properties = $object->_getProperties();
 317                 foreach ($properties as $propertyName => $propertyValue) {
 318                         // FIXME We couple the Backend to the Entity implementation (uid, isClone); changes there breaks this method
 319                         if ($dataMap->isPersistableProperty($propertyName) && ($propertyName !== 'uid')  && ($propertyName !== 'pid') && ($propertyName !== 'isClone')) {
 320                                 if ($propertyValue === NULL) {
 321                                         $fields[] = $dataMap->getColumnMap($propertyName)->getColumnName() . ' IS NULL';
 322                                 } else {
 323                                         $fields[] = $dataMap->getColumnMap($propertyName)->getColumnName() . '=?';
 324                                         $parameters[] = $dataMap->convertPropertyValueToFieldValue($propertyValue);
 325                                 }
 326                         }
 327                 }
 328                 $sql = array();
 329                 $sql['additionalWhereClause'] = array();
 330
 331                 $tableName = $dataMap->getTableName();
 332                 $this->addEnableFieldsStatement($tableName, $sql);
 333
 334                 $statement = 'SELECT * FROM ' . $tableName;
 335                 $statement .= ' WHERE ' . implode(' AND ', $fields);
 336                 if (!empty($sql['additionalWhereClause'])) {
 337                         $statement .= ' AND ' . implode(' AND ', $sql['additionalWhereClause']);
 338                 }
 339                 $this->replacePlaceholders($statement, $parameters);
 340                 // debug($statement,-2);
 341                 $res = $this->databaseHandle->sql_query($statement);
 342                 $this->checkSqlErrors();
 343                 $row = $this->databaseHandle->sql_fetch_assoc($res);
 344                 if ($row !== FALSE) {
 345                         return (int)$row['uid'];
 346                 } else {
 347                         return FALSE;
 348                 }
 349         }
 350
 351         /**
 352          * Transforms a Query Source into SQL and parameter arrays
 353          *
 354          * @param Tx_Extbase_Persistence_QOM_QueryObjectModel $query
 355          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 356          * @param array &$sql
 357          * @param array &$parameters
 358          * @return void
 359          */
 360         protected function parseSource(Tx_Extbase_Persistence_Query $query, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql) {
 361                 if ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 362                         $tableName = $source->getSelectorName();
 363                         $sql['fields'][] = $tableName . '.*';
 364                         $sql['tables'][] = $tableName;
 365                         $querySettings = $query->getQuerySettings();
 366                         if ($querySettings instanceof Tx_Extbase_Persistence_QuerySettingsInterface) {
 367                                 if ($querySettings->getRespectEnableFields()) {
 368                                         $this->addEnableFieldsStatement($tableName, $sql);
 369                                 }
 370                                 if ($querySettings->getRespectSysLanguage()) {
 371                                         $this->addSysLanguageStatement($tableName, $sql);
 372                                 }
 373                                 if ($querySettings->getRespectStoragePage()) {
 374                                         $this->addPageIdStatement($tableName, $sql);
 375                                 }
 376                         }
 377                 } elseif ($source instanceof Tx_Extbase_Persistence_QOM_JoinInterface) {
 378                         $this->parseJoin($query, $source, $sql);
 379                 }
 380         }
 381
 382         /**
 383          * Transforms a Join into SQL and parameter arrays
 384          *
 385          * @param Tx_Extbase_Persistence_QOM_QueryObjectModel $query The Query Object Model
 386          * @param Tx_Extbase_Persistence_QOM_JoinInterface $join The join
 387          * @param array &$sql The query parts
 388          * @return void
 389          */
 390         protected function parseJoin(Tx_Extbase_Persistence_QueryInterface $query, Tx_Extbase_Persistence_QOM_JoinInterface $join, array &$sql) {
 391                 $leftSource = $join->getLeft();
 392                 $leftTableName = $leftSource->getSelectorName();
 393                 $rightSource = $join->getRight();
 394                 $rightTableName = $rightSource->getSelectorName();
 395
 396                 $sql['fields'][] = $leftTableName . '.*';
 397                 $sql['fields'][] = $rightTableName . '.*';
 398
 399                 // TODO Implement support for different join types and nested joins
 400                 $sql['tables'][] = $leftTableName . ' LEFT JOIN ' . $rightTableName;
 401
 402                 $joinCondition = $join->getJoinCondition();
 403                 // TODO Check the parsing of the join
 404                 if ($joinCondition instanceof Tx_Extbase_Persistence_QOM_EquiJoinCondition) {
 405                         // TODO Discuss, if we should use $leftSource instead of $selector1Name
 406                         $column1Name = $this->dataMapper->convertPropertyNameToColumnName($joinCondition->getProperty1Name(), $leftSource->getNodeTypeName());
 407                         $column2Name = $this->dataMapper->convertPropertyNameToColumnName($joinCondition->getProperty2Name(), $rightSource->getNodeTypeName());
 408                         $sql['tables'][] = 'ON ' . $joinCondition->getSelector1Name() . '.' . $column1Name . ' = ' . $joinCondition->getSelector2Name() . '.' . $column2Name;
 409                 }
 410                 // TODO Implement childtableWhere
 411
 412                 $querySettings = $query->getQuerySettings();
 413                 if ($querySettings instanceof Tx_Extbase_Persistence_Typo3QuerySettingsInterface) {
 414                         if ($querySettings->getRespectEnableFields()) {
 415                                 $this->addEnableFieldsStatement($leftTableName, $sql);
 416                                 $this->addEnableFieldsStatement($rightTableName, $sql);
 417                         }
 418                         if ($querySettings->getRespectSysLanguage()) {
 419                                 $this->addSysLanguageStatement($leftTableName, $sql);
 420                                 $this->addSysLanguageStatement($rightTableName, $sql);
 421                         }
 422                         if ($querySettings->getRespectStoragePage()) {
 423                                 $this->addPageIdStatement($leftTableName, $sql);
 424                                 $this->addPageIdStatement($rightTableName, $sql);
 425                         }
 426                 }
 427         }
 428
 429         /**
 430          * Transforms a constraint into SQL and parameter arrays
 431          *
 432          * @param Tx_Extbase_Persistence_QOM_ConstraintInterface $constraint The constraint
 433          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 434          * @param array &$sql The query parts
 435          * @param array &$parameters The parameters that will replace the markers
 436          * @param array $boundVariableValues The bound variables in the query (key) and their values (value)
 437          * @return void
 438          */
 439         protected function parseConstraint(Tx_Extbase_Persistence_QOM_ConstraintInterface $constraint = NULL, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql, array &$parameters) {
 440                 if ($constraint instanceof Tx_Extbase_Persistence_QOM_AndInterface) {
 441                         $sql['where'][] = '(';
 442                         $this->parseConstraint($constraint->getConstraint1(), $source, $sql, $parameters);
 443                         $sql['where'][] = ' AND ';
 444                         $this->parseConstraint($constraint->getConstraint2(), $source, $sql, $parameters);
 445                         $sql['where'][] = ')';
 446                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_OrInterface) {
 447                         $sql['where'][] = '(';
 448                         $this->parseConstraint($constraint->getConstraint1(), $source, $sql, $parameters);
 449                         $sql['where'][] = ' OR ';
 450                         $this->parseConstraint($constraint->getConstraint2(), $source, $sql, $parameters);
 451                         $sql['where'][] = ')';
 452                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_NotInterface) {
 453                         $sql['where'][] = 'NOT (';
 454                         $this->parseConstraint($constraint->getConstraint(), $source, $sql, $parameters);
 455                         $sql['where'][] = ')';
 456                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_ComparisonInterface) {
 457                         $this->parseComparison($constraint, $source, $sql, $parameters);
 458                 }
 459         }
 460
 461         /**
 462          * Parse a Comparison into SQL and parameter arrays.
 463          *
 464          * @param Tx_Extbase_Persistence_QOM_ComparisonInterface $comparison The comparison to parse
 465          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 466          * @param array &$sql SQL query parts to add to
 467          * @param array &$parameters Parameters to bind to the SQL
 468          * @param array $boundVariableValues The bound variables in the query and their values
 469          * @return void
 470          */
 471         protected function parseComparison(Tx_Extbase_Persistence_QOM_ComparisonInterface $comparison, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql, array &$parameters) {
 472                 $operand1 = $comparison->getOperand1();
 473                 $operator = $comparison->getOperator();
 474                 $operand2 = $comparison->getOperand2();
 475                 if (($operator === Tx_Extbase_Persistence_QueryInterface::OPERATOR_EQUAL_TO) && (is_array($operand2) || ($operand2 instanceof ArrayAccess) || ($operand2 instanceof Traversable))) {
 476                         // FIXME this else branch enables equals() to behave like in(). This behavior is deprecated and will be removed in future. Use in() instead.
 477                         $operator = Tx_Extbase_Persistence_QueryInterface::OPERATOR_IN;
 478                 }
 479
 480                 if ($operator === Tx_Extbase_Persistence_QueryInterface::OPERATOR_IN) {
 481                         $items = array();
 482                         $hasValue = FALSE;
 483                         foreach ($operand2 as $value) {
 484                                 $value = $this->getPlainValue($value);
 485                                 if ($value !== NULL) {
 486                                         $items[] = $value;
 487                                         $hasValue = TRUE;
 488                                 }
 489                         }
 490                         if ($hasValue === FALSE) {
 491                                 $sql['where'][] = '1<>1';
 492                         } else {
 493                                 $this->parseDynamicOperand($operand1, $operator, $source, $sql, $parameters, NULL, $operand2);
 494                                 $items = array();
 495                                 foreach ($operand2 as $value) {
 496                                         $items[] = $this->getPlainValue($value);
 497                                 }
 498                                 $parameters[] = $items;
 499                         }
 500                 } elseif ($operator === Tx_Extbase_Persistence_QueryInterface::OPERATOR_CONTAINS) {
 501                         if ($operand2 === NULL) {
 502                                 $sql['where'][] = '1<>1';
 503                         } else {
 504                                 $dataMap = $this->dataMapper->getDataMap($source->getNodeTypeName());
 505                                 $columnMap = $dataMap->getColumnMap($operand1->getPropertyName());
 506                                 $typeOfRelation = $columnMap->getTypeOfRelation();
 507                                 if ($typeOfRelation === Tx_Extbase_Persistence_Mapper_ColumnMap::RELATION_HAS_AND_BELONGS_TO_MANY) {
 508                                         $relationTableName = $columnMap->getRelationTableName();
 509                                         $sql['where'][] = 'uid IN (SELECT uid_local FROM ' . $relationTableName . ' WHERE uid_foreign=' . $this->getPlainValue($operand2) . ')';
 510                                 } elseif ($typeOfRelation === Tx_Extbase_Persistence_Mapper_ColumnMap::RELATION_HAS_MANY) {
 511                                         $parentKeyFieldName = $columnMap->getParentKeyFieldName();
 512                                         if (isset($parentKeyFieldName)) {
 513                                                 $columnName = $this->dataMapper->convertPropertyNameToColumnName($operand1->getPropertyName(), $source->getNodeTypeName());
 514                                                 $childTableName = $columnMap->getChildTableName();
 515                                                 $sql['where'][] = 'uid=(SELECT ' . $childTableName . '.' . $parentKeyFieldName . ' FROM ' . $childTableName . ' WHERE ' . $childTableName . '.uid=' . $this->getPlainValue($operand2) . ')';
 516                                         } else {
 517                                                 $tableName = $operand1->getSelectorName();
 518                                                 $statement = '(' . $tableName . '.' . $operand1->getPropertyName() . ' LIKE \'%,' . $this->getPlainValue($operand2) . ',%\'';
 519                                                 $statement .= ' OR ' . $tableName . '.' . $operand1->getPropertyName() . ' LIKE \'%,' . $this->getPlainValue($operand2) . '\'';
 520                                                 $statement .= ' OR ' . $tableName . '.' . $operand1->getPropertyName() . ' LIKE \'' . $this->getPlainValue($operand2) . ',%\')';
 521                                                 $sql['where'][] = $statement;
 522                                         }
 523                                 } else {
 524                                         throw new Tx_Extbase_Persistence_Exception_RepositoryException('Unsupported relation for contains().', 1267832524);
 525                                 }
 526                         }
 527                 } else {
 528                         if ($operand2 === NULL) {
 529                                 if ($operator === Tx_Extbase_Persistence_QueryInterface::OPERATOR_EQUAL_TO) {
 530                                         $operator = self::OPERATOR_EQUAL_TO_NULL;
 531                                 } elseif ($operator === Tx_Extbase_Persistence_QueryInterface::OPERATOR_NOT_EQUAL_TO) {
 532                                         $operator = self::OPERATOR_NOT_EQUAL_TO_NULL;
 533                                 }
 534                         }
 535                         $this->parseDynamicOperand($operand1, $operator, $source, $sql, $parameters);
 536                         $parameters[] = $this->getPlainValue($operand2);
 537                 }
 538         }
 539
 540         /**
 541          * Returns a plain value, i.e. objects are flattened out if possible.
 542          *
 543          * @param mixed $input
 544          * @return mixed
 545          */
 546         protected function getPlainValue($input) {
 547                 if ($input instanceof DateTime) {
 548                         return $input->format('U');
 549                 } elseif ($input instanceof Tx_Extbase_DomainObject_DomainObjectInterface) {
 550                         return $input->getUid();
 551                 } elseif (is_bool($input)) {
 552                         return $input === TRUE ? 1 : 0;
 553                 } else {
 554                         return $input;
 555                 }
 556         }
 557
 558         /**
 559          * Parse a DynamicOperand into SQL and parameter arrays.
 560          *
 561          * @param Tx_Extbase_Persistence_QOM_DynamicOperandInterface $operand
 562          * @param string $operator One of the JCR_OPERATOR_* constants
 563          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 564          * @param array &$sql The query parts
 565          * @param array &$parameters The parameters that will replace the markers
 566          * @param string $valueFunction an optional SQL function to apply to the operand value
 567          * @return void
 568          */
 569         protected function parseDynamicOperand(Tx_Extbase_Persistence_QOM_DynamicOperandInterface $operand, $operator, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql, array &$parameters, $valueFunction = NULL, $operand2 = NULL) {
 570                 if ($operand instanceof Tx_Extbase_Persistence_QOM_LowerCaseInterface) {
 571                         $this->parseDynamicOperand($operand->getOperand(), $operator, $source, $sql, $parameters, 'LOWER');
 572                 } elseif ($operand instanceof Tx_Extbase_Persistence_QOM_UpperCaseInterface) {
 573                         $this->parseDynamicOperand($operand->getOperand(), $operator, $source, $sql, $parameters, 'UPPER');
 574                 } elseif ($operand instanceof Tx_Extbase_Persistence_QOM_PropertyValueInterface) {
 575                         $tableName = $operand->getSelectorName();
 576                         // FIXME Discuss the translation from propertyName to columnName
 577                         if ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 578                                 $className = $source->getNodeTypeName();
 579                         } else {
 580                                 $className = '';
 581                         }
 582                         $columnName = $this->dataMapper->convertPropertyNameToColumnName($operand->getPropertyName(), $className);
 583                         $operator = $this->resolveOperator($operator);
 584                         if ($valueFunction === NULL) {
 585                                 $constraintSQL .= (!empty($tableName) ? $tableName . '.' : '') . $columnName .  ' ' . $operator . ' ?';
 586                         } else {
 587                                 $constraintSQL .= $valueFunction . '(' . (!empty($tableName) ? $tableName . '.' : '') . $columnName .  ' ' . $operator . ' ?';
 588                         }
 589
 590                         $sql['where'][] = $constraintSQL;
 591                 }
 592         }
 593
 594         /**
 595          * Returns the SQL operator for the given JCR operator type.
 596          *
 597          * @param string $operator One of the JCR_OPERATOR_* constants
 598          * @return string an SQL operator
 599          */
 600         protected function resolveOperator($operator) {
 601                 switch ($operator) {
 602                         case self::OPERATOR_EQUAL_TO_NULL:
 603                                 $operator = 'IS';
 604                                 break;
 605                         case self::OPERATOR_NOT_EQUAL_TO_NULL:
 606                                 $operator = 'IS NOT';
 607                                 break;
 608                         case Tx_Extbase_Persistence_QueryInterface::OPERATOR_IN:
 609                                 $operator = 'IN';
 610                                 break;
 611                         case Tx_Extbase_Persistence_QueryInterface::OPERATOR_EQUAL_TO:
 612                                 $operator = '=';
 613                                 break;
 614                         case Tx_Extbase_Persistence_QueryInterface::OPERATOR_NOT_EQUAL_TO:
 615                                 $operator = '!=';
 616                                 break;
 617                         case Tx_Extbase_Persistence_QueryInterface::OPERATOR_LESS_THAN:
 618                                 $operator = '<';
 619                                 break;
 620                         case Tx_Extbase_Persistence_QueryInterface::OPERATOR_LESS_THAN_OR_EQUAL_TO:
 621                                 $operator = '<=';
 622                                 break;
 623                         case Tx_Extbase_Persistence_QueryInterface::OPERATOR_GREATER_THAN:
 624                                 $operator = '>';
 625                                 break;
 626                         case Tx_Extbase_Persistence_QueryInterface::OPERATOR_GREATER_THAN_OR_EQUAL_TO:
 627                                 $operator = '>=';
 628                                 break;
 629                         case Tx_Extbase_Persistence_QueryInterface::OPERATOR_LIKE:
 630                                 $operator = 'LIKE';
 631                                 break;
 632                         default:
 633                                 throw new Tx_Extbase_Persistence_Exception('Unsupported operator encountered.', 1242816073);
 634                 }
 635
 636                 return $operator;
 637         }
 638
 639         /**
 640          * Replace query placeholders in a query part by the given
 641          * parameters.
 642          *
 643          * @param string $sqlString The query part with placeholders
 644          * @param array $parameters The parameters
 645          * @return string The query part with replaced placeholders
 646          */
 647         protected function replacePlaceholders(&$sqlString, array $parameters) {
 648                 // TODO profile this method again
 649                 if (substr_count($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);
 650                 $offset = 0;
 651                 foreach ($parameters as $parameter) {
 652                         $markPosition = strpos($sqlString, '?', $offset);
 653                         if ($markPosition !== FALSE) {
 654                                 if ($parameter === NULL) {
 655                                         $parameter = 'NULL';
 656                                 } elseif (is_array($parameter) || ($parameter instanceof ArrayAccess) || ($parameter instanceof Traversable)) {
 657                                         $items = array();
 658                                         foreach ($parameter as $item) {
 659                                                 $items[] = $this->databaseHandle->fullQuoteStr($item, 'foo');
 660                                         }
 661                                         $parameter = '(' . implode(',', $items) . ')';
 662                                 } else {
 663                                         $parameter = $this->databaseHandle->fullQuoteStr($parameter, 'foo'); // FIXME This may not work with DBAL; check this
 664                                 }
 665                                 $sqlString = substr($sqlString, 0, $markPosition) . $parameter . substr($sqlString, $markPosition + 1);
 666                         }
 667                         $offset = $markPosition + strlen($parameter);
 668                 }
 669         }
 670
 671         /**
 672          * Builds the enable fields statement
 673          *
 674          * @param string $tableName The database table name
 675          * @param array &$sql The query parts
 676          * @return void
 677          */
 678         protected function addEnableFieldsStatement($tableName, array &$sql) {
 679                 if (is_array($GLOBALS['TCA'][$tableName]['ctrl'])) {
 680                         if (TYPO3_MODE === 'FE') {
 681                                 $statement = $GLOBALS['TSFE']->sys_page->enableFields($tableName);
 682                         } else { // TYPO3_MODE === 'BE'
 683                                 $statement = t3lib_BEfunc::deleteClause($tableName);
 684                                 $statement .= t3lib_BEfunc::BEenableFields($tableName);
 685                         }
 686                         if(!empty($statement)) {
 687                                 $statement = substr($statement, 5);
 688                                 $sql['additionalWhereClause'][] = $statement;
 689                         }
 690                 }
 691         }
 692
 693         /**
 694          * Builds the language field statement
 695          *
 696          * @param string $tableName The database table name
 697          * @param array &$sql The query parts
 698          * @return void
 699          */
 700         protected function addSysLanguageStatement($tableName, array &$sql) {
 701                 if (is_array($GLOBALS['TCA'][$tableName]['ctrl'])) {
 702                         if(isset($GLOBALS['TCA'][$tableName]['ctrl']['languageField']) && $GLOBALS['TCA'][$tableName]['ctrl']['languageField'] !== NULL) {
 703                                 $sql['additionalWhereClause'][] = $tableName . '.' . $GLOBALS['TCA'][$tableName]['ctrl']['languageField'] . ' IN (0,-1)';
 704                         }
 705                 }
 706         }
 707
 708         /**
 709          * Builds the page ID checking statement
 710          *
 711          * @param string $tableName The database table name
 712          * @param array &$sql The query parts
 713          * @return void
 714          */
 715         protected function addPageIdStatement($tableName, array &$sql) {
 716                 if (empty($this->tableInformationCache[$tableName]['columnNames'])) {
 717                         $this->tableInformationCache[$tableName]['columnNames'] = $this->databaseHandle->admin_get_fields($tableName);
 718                 }
 719                 if (is_array($GLOBALS['TCA'][$tableName]['ctrl']) && array_key_exists('pid', $this->tableInformationCache[$tableName]['columnNames'])) {
 720                         $extbaseFrameworkConfiguration = Tx_Extbase_Dispatcher::getExtbaseFrameworkConfiguration();
 721                         $sql['additionalWhereClause'][] = $tableName . '.pid IN (' . implode(', ', t3lib_div::intExplode(',', $extbaseFrameworkConfiguration['persistence']['storagePid'])) . ')';
 722                 }
 723         }
 724
 725         /**
 726          * Transforms orderings into SQL.
 727          *
 728          * @param array $orderings Ann array of orderings (Tx_Extbase_Persistence_QOM_Ordering)
 729          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source
 730          * @param array &$sql The query parts
 731          * @return void
 732          */
 733         protected function parseOrderings(array $orderings, Tx_Extbase_Persistence_QOM_SourceInterface $source, array &$sql) {
 734                 foreach ($orderings as $ordering) {
 735                         $operand = $ordering->getOperand();
 736                         $order = $ordering->getOrder();
 737                         if ($operand instanceof Tx_Extbase_Persistence_QOM_PropertyValue) {
 738                                 switch ($order) {
 739                                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_ORDER_ASCENDING:
 740                                                 $order = 'ASC';
 741                                                 break;
 742                                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_ORDER_DESCENDING:
 743                                                 $order = 'DESC';
 744                                                 break;
 745                                         default:
 746                                                 throw new Tx_Extbase_Persistence_Exception_UnsupportedOrder('Unsupported order encountered.', 1242816074);
 747                                 }
 748                                 $tableName = $operand->getSelectorName();
 749                                 $className = '';
 750                                 if ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 751                                         $className = $source->getNodeTypeName();
 752                                 }
 753                                 $columnName = $this->dataMapper->convertPropertyNameToColumnName($operand->getPropertyName(), $className);
 754                                 if (strlen($tableName) > 0) {
 755                                         $sql['orderings'][] = $tableName . '.' . $columnName . ' ' . $order;
 756                                 } else {
 757                                         $sql['orderings'][] = $columnName . ' ' . $order;
 758                                 }
 759                         }
 760                 }
 761         }
 762
 763         /**
 764          * Transforms limit and offset into SQL
 765          *
 766          * @param int $limit
 767          * @param int $offset
 768          * @param array &$sql
 769          * @return void
 770          */
 771         protected function parseLimitAndOffset($limit, $offset, array &$sql) {
 772                 if ($limit !== NULL && $offset !== NULL) {
 773                         $sql['limit'] = $offset . ', ' . $limit;
 774                 } elseif ($limit !== NULL) {
 775                         $sql['limit'] = $limit;
 776                 }
 777         }
 778
 779         /**
 780          * Transforms a Resource from a database query to an array of rows.
 781          *
 782          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source (selector od join)
 783          * @param resource $result The result
 784          * @return array The result as an array of rows (tuples)
 785          */
 786         protected function getRowsFromResult(Tx_Extbase_Persistence_QOM_SourceInterface $source, $result) {
 787                 $rows = array();
 788                 while ($row = $this->databaseHandle->sql_fetch_assoc($result)) {
 789                         if (is_array($row)) {
 790                                 // TODO Check if this is necessary, maybe the last line is enough
 791                                 $arrayKeys = range(0, count($row));
 792                                 array_fill_keys($arrayKeys, $row);
 793                                 $rows[] = $row;
 794                         }
 795                 }
 796                 return $rows;
 797         }
 798
 799         /**
 800          * Performs workspace and language overlay on the given row array. The language and workspace id is automatically
 801          * detected (depending on FE or BE context). You can also explicitly set the language/workspace id.
 802          *
 803          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source (selector od join)
 804          * @param array $row The row array (as reference)
 805          * @param string $languageUid The language id
 806          * @param string $workspaceUidUid The workspace id
 807          * @return void
 808          */
 809         protected function doLanguageAndWorkspaceOverlay(Tx_Extbase_Persistence_QOM_SourceInterface $source, array $rows, $languageUid = NULL, $workspaceUid = NULL) {
 810                 $overlayedRows = array();
 811                 foreach ($rows as $row) {
 812                         if (!($this->pageSelectObject instanceof t3lib_pageSelect)) {
 813                                 if (TYPO3_MODE == 'FE') {
 814                                         if (is_object($GLOBALS['TSFE'])) {
 815                                                 $this->pageSelectObject = $GLOBALS['TSFE']->sys_page;
 816                                         } else {
 817                                                 require_once(PATH_t3lib . 'class.t3lib_page.php');
 818                                                 $this->pageSelectObject = t3lib_div::makeInstance('t3lib_pageSelect');
 819                                         }
 820                                 } else {
 821                                         require_once(PATH_t3lib . 'class.t3lib_page.php');
 822                                         $this->pageSelectObject = t3lib_div::makeInstance( 't3lib_pageSelect' );
 823                                 }
 824                         }
 825                         if (is_object($GLOBALS['TSFE'])) {
 826                                 if ($languageUid === NULL) {
 827                                         $languageUid = $GLOBALS['TSFE']->sys_language_uid;
 828                                 }
 829                                 if ($workspaceUid !== NULL) {
 830                                         $this->pageSelectObject->versioningWorkspaceId = $workspaceUid;
 831                                 }
 832                         } else {
 833                                 if ($languageUid === NULL) {
 834                                         $languageUid = intval(t3lib_div::_GP('L'));
 835                                 }
 836                                 if ($workspaceUid === NULL) {
 837                                         $workspaceUid = $GLOBALS['BE_USER']->workspace;
 838                                 }
 839                                 $this->pageSelectObject->versioningWorkspaceId = $workspaceUid;
 840                         }
 841                         if ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 842                                 $tableName = $source->getSelectorName();
 843                         } elseif ($source instanceof Tx_Extbase_Persistence_QOM_JoinInterface) {
 844                                 $tableName = $source->getLeft()->getSelectorName();
 845                         }
 846                         $this->pageSelectObject->versionOL($tableName, $row, TRUE);
 847                         if(isset($GLOBALS['TCA'][$tableName]['ctrl']['languageField']) && $GLOBALS['TCA'][$tableName]['ctrl']['languageField'] !== '') {
 848                                 if (in_array($row[$GLOBALS['TCA'][$tableName]['ctrl']['languageField']], array(-1,0))) {
 849                                         $row = $this->pageSelectObject->getRecordOverlay($tableName, $row, $languageUid);
 850                                 }
 851                         }
 852                         $overlayedRows[] = $row;
 853                 }
 854                 return $overlayedRows;
 855         }
 856
 857         /**
 858          * Checks if there are SQL errors in the last query, and if yes, throw an exception.
 859          *
 860          * @return void
 861          * @throws Tx_Extbase_Persistence_Storage_Exception_SqlError
 862          */
 863         protected function checkSqlErrors() {
 864                 $error = $this->databaseHandle->sql_error();
 865                 if ($error !== '') {
 866                         throw new Tx_Extbase_Persistence_Storage_Exception_SqlError($error, 1247602160);
 867                 }
 868         }
 869
 870         /**
 871          * Clear the TYPO3 page cache for the given record.
 872          * If the record lies on a page, then we clear the cache of this page.
 873          * If the record has no PID column, we clear the cache of the current page as best-effort.
 874          *
 875          * Much of this functionality is taken from t3lib_tcemain::clear_cache() which unfortunately only works with logged-in BE user.
 876          *
 877          * @param $tableName Table name of the record
 878          * @param $uid UID of the record
 879          * @return void
 880          */
 881         protected function clearPageCache($tableName, $uid) {
 882                 $extbaseSettings = Tx_Extbase_Dispatcher::getExtbaseFrameworkConfiguration();
 883                 if (isset($extbaseSettings['persistence']['enableAutomaticCacheClearing']) && $extbaseSettings['persistence']['enableAutomaticCacheClearing'] === '1') {
 884                 } else {
 885                         // if disabled, return
 886                         return;
 887                 }
 888
 889                 $pageIdsToClear = array();
 890                 $storagePage = NULL;
 891
 892                 $columns = $this->databaseHandle->admin_get_fields($tableName);
 893                 if (array_key_exists('pid', $columns)) {
 894                         $result = $this->databaseHandle->exec_SELECTquery('pid', $tableName, 'uid='.intval($uid));
 895                         if ($row = $this->databaseHandle->sql_fetch_assoc($result))     {
 896                                 $storagePage = $row['pid'];
 897                                 $pageIdsToClear[] = $storagePage;
 898                         }
 899                 } elseif (isset($GLOBALS['TSFE'])) {
 900                         // No PID column - we can do a best-effort to clear the cache of the current page if in FE
 901                         $storagePage = $GLOBALS['TSFE']->id;
 902                         $pageIdsToClear[] = $storagePage;
 903                 }
 904
 905                 if ($storagePage === NULL) {
 906                         return;
 907                 }
 908                 if (!isset($this->pageTSConfigCache[$storagePage])) {
 909                         $this->pageTSConfigCache[$storagePage] = t3lib_BEfunc::getPagesTSconfig($storagePage);
 910                 }
 911                 if (isset($this->pageTSConfigCache[$storagePage]['TCEMAIN.']['clearCacheCmd'])) {
 912                         $clearCacheCommands = t3lib_div::trimExplode(',',strtolower($this->pageTSConfigCache[$storagePage]['TCEMAIN.']['clearCacheCmd']),1);
 913                         $clearCacheCommands = array_unique($clearCacheCommands);
 914                         foreach ($clearCacheCommands as $clearCacheCommand)     {
 915                                 if (t3lib_div::testInt($clearCacheCommand))     {
 916                                         $pageIdsToClear[] = $clearCacheCommand;
 917                                 }
 918                         }
 919                 }
 920
 921                 // TODO check if we can hand this over to the Dispatcher to clear the page only once, this will save around 10% time while inserting and updating
 922                 Tx_Extbase_Utility_Cache::clearPageCache($pageIdsToClear);
 923         }
 924 }
 925
 926 ?>