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
  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          * The TYPO3 page select object. Used for language and workspace overlay
  49          *
  50          * @var t3lib_pageSelect
  51          */
  52         protected $pageSelectObject;
  53
  54         /**
  55          * TRUE if the framework should add the "enable fields" (e.g. checking for hidden or deleted records)
  56          *
  57          * @var boolean
  58          */
  59         protected $useEnableFields = TRUE;
  60
  61         /**
  62          * TRUE if automatic cache clearing in TCEMAIN should be done on insert/update/delete, FALSE otherwise.
  63          *
  64          * @var boolean
  65          */
  66         protected $automaticCacheClearing = FALSE;
  67
  68         /**
  69          * Constructs this Storage Backend instance
  70          *
  71          * @param t3lib_db $databaseHandle The database handle
  72          */
  73         public function __construct($databaseHandle) {
  74                 $this->databaseHandle = $databaseHandle;
  75         }
  76
  77         /**
  78          * Set the automatic cache clearing flag.
  79          * If TRUE, then inserted/updated/deleted records trigger a TCEMAIN cache clearing.
  80          *
  81          * @param $automaticCacheClearing boolean if TRUE, enables automatic cache clearing
  82          * @return void
  83          * @internal
  84          */
  85         public function setAutomaticCacheClearing($automaticCacheClearing) {
  86                 $this->automaticCacheClearing = (boolean)$automaticCacheClearing;
  87         }
  88
  89         /**
  90          * Adds a row to the storage
  91          *
  92          * @param string $tableName The database table name
  93          * @param array $row The row to be inserted
  94          * @return int The uid of the inserted row
  95          */
  96         public function addRow($tableName, array $row) {
  97                 $fields = array();
  98                 $values = array();
  99                 $parameters = array();
 100                 unset($row['uid']); // TODO Check if the offset exists
 101                 foreach ($row as $columnName => $value) {
 102                         $fields[] = $columnName;
 103                         $values[] = '?';
 104                         $parameters[] = $value;
 105                 }
 106
 107                 $sqlString = 'INSERT INTO ' . $tableName . ' (' . implode(', ', $fields) . ') VALUES (' . implode(', ', $values) . ')';
 108                 $this->replacePlaceholders($sqlString, $parameters);
 109
 110                 $this->databaseHandle->sql_query($sqlString);
 111                 $uid = $this->databaseHandle->sql_insert_id();
 112                 $this->clearPageCache($tableName, $uid);
 113                 return $uid;
 114         }
 115
 116         /**
 117          * Updates a row in the storage
 118          *
 119          * @param string $tableName The database table name
 120          * @param array $row The row to be updated
 121          * @return void
 122          */
 123         public function updateRow($tableName, array $row) {
 124                 if (!isset($row['uid'])) throw new InvalidArgumentException('The given row must contain a value for "uid".');
 125                 $uid = (int)$row['uid'];
 126                 unset($row['uid']);
 127                 $fields = array();
 128                 $parameters = array();
 129                 foreach ($row as $columnName => $value) {
 130                         $fields[] = $columnName . '=?';
 131                         $parameters[] = $value;
 132                 }
 133                 $parameters[] = $uid;
 134
 135                 $sqlString = 'UPDATE ' . $tableName . ' SET ' . implode(', ', $fields) . ' WHERE uid=?';
 136                 $this->replacePlaceholders($sqlString, $parameters);
 137
 138                 $returnValue = $this->databaseHandle->sql_query($sqlString);
 139                 $this->clearPageCache($tableName, $uid);
 140                 return $returnValue;
 141         }
 142
 143         /**
 144          * Deletes a row in the storage
 145          *
 146          * @param string $tableName The database table name
 147          * @param array $uid The uid of the row to be deleted
 148          * @return void
 149          */
 150         public function removeRow($tableName, $uid) {
 151                 $sqlString = 'DELETE FROM ' . $tableName . ' WHERE uid=?';
 152                 $this->replacePlaceholders($sqlString, array((int)$uid));
 153                 $this->clearPageCache($tableName, $uid);
 154                 $returnValue = $this->databaseHandle->sql_query($sqlString);
 155                 return $returnValue;
 156         }
 157
 158         /**
 159          * Returns an array with tuples matching the query.
 160          *
 161          * @param Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query
 162          * @return array The matching tuples
 163          */
 164         public function getRows(Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query) {
 165                 $sql = array();
 166                 $sql['tables'] = array();
 167                 $sql['fields'] = array();
 168                 $sql['where'] = array();
 169                 $sql['enableFields'] = array();
 170                 $sql['orderings'] = array();
 171                 $parameters = array();
 172                 $tuples = array();
 173
 174                 $this->parseSource($query, $sql, $parameters);
 175                 $sqlString = 'SELECT ' . implode(',', $sql['fields']) . ' FROM ' . implode(' ', $sql['tables']);
 176
 177                 $this->parseConstraint($query->getConstraint(), $sql, $parameters, $query->getBoundVariableValues());
 178                 if (!empty($sql['where'])) {
 179                         $sqlString .= ' WHERE ' . implode('', $sql['where']);
 180                         if (!empty($sql['enableFields'])) {
 181                                 $sqlString .= ' AND ' . implode(' AND ', $sql['enableFields']);
 182                         }
 183                 } elseif (!empty($sql['enableFields'])) {
 184                         $sqlString .= ' WHERE ' . implode(' AND ', $sql['enableFields']);
 185                 }
 186
 187                 $this->parseOrderings($query->getOrderings(), $sql, $parameters, $query->getBoundVariableValues());
 188                 if (!empty($sql['orderings'])) {
 189                         $sqlString .= ' ORDER BY ' . implode(', ', $sql['orderings']);
 190                 }
 191
 192                 $this->replacePlaceholders($sqlString, $parameters);
 193
 194                 $result = $this->databaseHandle->sql_query($sqlString);
 195                 if ($result) {
 196                         // TODO Check for selector name
 197                         $tuples = $this->getRowsFromResult($query->getSelectorName(), $result);
 198                 }
 199
 200                 return $tuples;
 201         }
 202
 203         /**
 204          * Checks if a Value Object equal to the given Object exists in the data base
 205          *
 206          * @param array $properties The properties of the Value Object
 207          * @param Tx_Extbase_Persistence_Mapper_DataMap $dataMap The Data Map
 208          * @return array The matching tuples
 209          */
 210         public function hasValueObject(array $properties, Tx_Extbase_Persistence_Mapper_DataMap $dataMap) {
 211                 $fields = array();
 212                 $parameters = array();
 213                 foreach ($properties as $propertyName => $propertyValue) {
 214                         if ($dataMap->isPersistableProperty($propertyName) && ($propertyName !== 'uid')) {
 215                                 $fields[] = $dataMap->getColumnMap($propertyName)->getColumnName() . '=?';
 216                                 $parameters[] = $dataMap->convertPropertyValueToFieldValue($propertyValue);
 217                         }
 218                 }
 219
 220                 $sqlString = 'SELECT * FROM ' . $dataMap->getTableName() .  ' WHERE ' . implode('', $fields);
 221                 $this->replacePlaceholders($sqlString, $parameters);
 222                 $res = $this->databaseHandle->sql_query($sqlString);
 223                 $row = $this->databaseHandle->sql_fetch_assoc($res);
 224                 if ($row !== FALSE) {
 225                         return $row['uid'];
 226                 } else {
 227                         return FALSE;
 228                 }
 229         }
 230
 231         /**
 232          * Transforms a Query Source into SQL and parameter arrays
 233          *
 234          * @param Tx_Extbase_Persistence_QOM_QueryObjectModel $query
 235          * @param array &$sql
 236          * @param array &$parameters
 237          * @return void
 238          */
 239         protected function parseSource(Tx_Extbase_Persistence_QOM_QueryObjectModel $query, array &$sql, array &$parameters) {
 240                 $source = $query->getSource();
 241                 if ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 242                         $selectorName = $source->getSelectorName();
 243                         $sql['fields'][] = $selectorName . '.*';
 244                         $sql['tables'][] = $selectorName;
 245                         // TODO Should we make the usage of enableFields configurable? And how? Because the Query object and even the QOM should be abstracted from the storage backend.
 246                         if ($this->useEnableFields === TRUE) {
 247                                 $this->addEnableFieldsStatement($selectorName, $sql);
 248                         }
 249                 } elseif ($source instanceof Tx_Extbase_Persistence_QOM_JoinInterface) {
 250                         $this->parseJoin($source, $sql, $parameters);
 251                 }
 252         }
 253
 254         /**
 255          * Transforms a Join into SQL and parameter arrays
 256          *
 257          * @param Tx_Extbase_Persistence_QOM_JoinInterface $join
 258          * @param array &$sql
 259          * @param array &$parameters
 260          * @return void
 261          */
 262         protected function parseJoin(Tx_Extbase_Persistence_QOM_JoinInterface $join, array &$sql, array &$parameters) {
 263                 $leftSelectorName = $join->getLeft()->getSelectorName();
 264                 $rightSelectorName = $join->getRight()->getSelectorName();
 265
 266                 $sql['fields'][] = $leftSelectorName . '.*';
 267                 $sql['fields'][] = $rightSelectorName . '.*';
 268
 269                 // TODO Implement support for different join types and nested joins
 270                 $sql['tables'][] = $leftSelectorName . ' LEFT JOIN ' . $rightSelectorName;
 271
 272                 $joinCondition = $join->getJoinCondition();
 273                 // TODO Check the parsing of the join
 274                 if ($joinCondition instanceof Tx_Extbase_Persistence_QOM_EquiJoinCondition) {
 275                         $sql['tables'][] = 'ON ' . $joinCondition->getSelector1Name() . '.' . $joinCondition->getProperty1Name() . ' = ' . $joinCondition->getSelector2Name() . '.' . $joinCondition->getProperty2Name();
 276                 }
 277                 // TODO Implement childtableWhere
 278
 279                 $this->addEnableFieldsStatement($leftSelectorName, $sql);
 280                 $this->addEnableFieldsStatement($rightSelectorName, $sql);
 281         }
 282
 283         /**
 284          * Transforms a constraint into SQL and parameter arrays
 285          *
 286          * @param Tx_Extbase_Persistence_QOM_ConstraintInterface $constraint
 287          * @param array &$sql
 288          * @param array &$parameters
 289          * @param array $boundVariableValues
 290          * @return void
 291          */
 292         protected function parseConstraint(Tx_Extbase_Persistence_QOM_ConstraintInterface $constraint = NULL, array &$sql, array &$parameters, array $boundVariableValues) {
 293                 if ($constraint instanceof Tx_Extbase_Persistence_QOM_AndInterface) {
 294                         $sql['where'][] = '(';
 295                         $this->parseConstraint($constraint->getConstraint1(), $sql, $parameters, $boundVariableValues);
 296                         $sql['where'][] = ' AND ';
 297                         $this->parseConstraint($constraint->getConstraint2(), $sql, $parameters, $boundVariableValues);
 298                         $sql['where'][] = ')';
 299                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_OrInterface) {
 300                         $sql['where'][] = '(';
 301                         $this->parseConstraint($constraint->getConstraint1(), $sql, $parameters, $boundVariableValues);
 302                         $sql['where'][] = ' OR ';
 303                         $this->parseConstraint($constraint->getConstraint2(), $sql, $parameters, $boundVariableValues);
 304                         $sql['where'][] = ')';
 305                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_NotInterface) {
 306                         $sql['where'][] = 'NOT (';
 307                         $this->parseConstraint($constraint->getConstraint(), $sql, $parameters, $boundVariableValues);
 308                         $sql['where'][] = ')';
 309                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_ComparisonInterface) {
 310                         $this->parseComparison($constraint, $sql, $parameters, $boundVariableValues);
 311                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_RelatedInterface) {
 312                         $this->parseRelated($constraint, $sql, $parameters, $boundVariableValues);
 313                 }
 314         }
 315
 316         /**
 317          * Parse a Comparison into SQL and parameter arrays.
 318          *
 319          * @param Tx_Extbase_Persistence_QOM_ComparisonInterface $comparison The comparison to parse
 320          * @param array &$sql SQL query parts to add to
 321          * @param array &$parameters Parameters to bind to the SQL
 322          * @param array $boundVariableValues The bound variables in the query and their values
 323          * @return void
 324          */
 325         protected function parseComparison(Tx_Extbase_Persistence_QOM_ComparisonInterface $comparison, array &$sql, array &$parameters, array $boundVariableValues) {
 326                 if (!($comparison->getOperand2() instanceof Tx_Extbase_Persistence_QOM_BindVariableValueInterface)) throw new Tx_Extbase_Persistence_Exception('Type of operand is not supported', 1247581135);
 327
 328                 $value = $boundVariableValues[$comparison->getOperand2()->getBindVariableName()];
 329                 $operator = $comparison->getOperator();
 330                 if ($value === NULL) {
 331                         if ($operator === Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_EQUAL_TO) {
 332                                 $operator = self::OPERATOR_EQUAL_TO_NULL;
 333                         } elseif ($operator === Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_NOT_EQUAL_TO) {
 334                                 $operator = self::OPERATOR_NOT_EQUAL_TO_NULL;
 335                         } else {
 336                                 // TODO Throw exception
 337                         }
 338                 }
 339                 $parameters[] = $value;
 340
 341                 $this->parseDynamicOperand($comparison->getOperand1(), $operator, $sql, $parameters);
 342         }
 343
 344         /**
 345          * Parse a DynamicOperand into SQL and parameter arrays.
 346          *
 347          * @param Tx_Extbase_Persistence_QOM_DynamicOperandInterface $operand
 348          * @param string $operator One of the JCR_OPERATOR_* constants
 349          * @param array $boundVariableValues
 350          * @param array &$parameters
 351          * @param string $valueFunction an aoptional SQL function to apply to the operand value
 352          * @return void
 353          */
 354         protected function parseDynamicOperand(Tx_Extbase_Persistence_QOM_DynamicOperandInterface $operand, $operator, array &$sql, array &$parameters, $valueFunction = NULL) {
 355                 if ($operand instanceof Tx_Extbase_Persistence_QOM_LowerCaseInterface) {
 356                         $this->parseDynamicOperand($operand->getOperand(), $operator, $sql, $parameters, 'LOWER');
 357                 } elseif ($operand instanceof Tx_Extbase_Persistence_QOM_UpperCaseInterface) {
 358                         $this->parseDynamicOperand($operand->getOperand(), $operator, $sql, $parameters, 'UPPER');
 359                 } elseif ($operand instanceof Tx_Extbase_Persistence_QOM_PropertyValueInterface) {
 360                         $selectorName = $operand->getSelectorName();
 361                         $operator = $this->resolveOperator($operator);
 362
 363                         if ($valueFunction === NULL) {
 364                                 $constraintSQL .= (!empty($selectorName) ? $selectorName . '.' : '') . $operand->getPropertyName() .  ' ' . $operator . ' ?';
 365                         } else {
 366                                 $constraintSQL .= $valueFunction . '(' . (!empty($selectorName) ? $selectorName . '.' : '') . $operand->getPropertyName() .  ' ' . $operator . ' ?';
 367                         }
 368
 369                         $sql['where'][] = $constraintSQL;
 370                 }
 371         }
 372
 373         /**
 374          * Returns the SQL operator for the given JCR operator type.
 375          *
 376          * @param string $operator One of the JCR_OPERATOR_* constants
 377          * @return string an SQL operator
 378          */
 379         protected function resolveOperator($operator) {
 380                 switch ($operator) {
 381                         case self::OPERATOR_EQUAL_TO_NULL:
 382                                 $operator = 'IS';
 383                                 break;
 384                         case self::OPERATOR_NOT_EQUAL_TO_NULL:
 385                                 $operator = 'IS NOT';
 386                                 break;
 387                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_EQUAL_TO:
 388                                 $operator = '=';
 389                                 break;
 390                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_NOT_EQUAL_TO:
 391                                 $operator = '!=';
 392                                 break;
 393                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_LESS_THAN:
 394                                 $operator = '<';
 395                                 break;
 396                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_LESS_THAN_OR_EQUAL_TO:
 397                                 $operator = '<=';
 398                                 break;
 399                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_GREATER_THAN:
 400                                 $operator = '>';
 401                                 break;
 402                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_GREATER_THAN_OR_EQUAL_TO:
 403                                 $operator = '>=';
 404                                 break;
 405                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_LIKE:
 406                                 $operator = 'LIKE';
 407                                 break;
 408                         default:
 409                                 throw new Tx_Extbase_Persistence_Exception('Unsupported operator encountered.', 1242816073);
 410                 }
 411
 412                 return $operator;
 413         }
 414
 415         /**
 416          * Replace query placeholders in a query part by the given
 417          * parameters.
 418          *
 419          * @param string $queryPart The query part with placeholders
 420          * @param array $parameters The parameters
 421          * @return string The query part with replaced placeholders
 422          */
 423         protected function replacePlaceholders(&$sqlString, array $parameters) {
 424                 if (substr_count($sqlString, '?') !== count($parameters)) throw new Tx_Extbase_Persistence_Exception('The number of question marks to replace must be equal to the number of parameters.', 1242816074);
 425                 foreach ($parameters as $parameter) {
 426                         $markPosition = strpos($sqlString, '?');
 427                         if ($markPosition !== FALSE) {
 428                                 // TODO This is a bit hacky; improve the handling of $parameter === NULL
 429                                 if ($parameter === NULL) {
 430                                         $parameter = 'NULL';
 431                                 } else {
 432                                         $parameter = '"' . $parameter . '"';
 433                                 }
 434                                 $sqlString = substr($sqlString, 0, $markPosition) . $parameter . substr($sqlString, $markPosition + 1);
 435                         }
 436                 }
 437         }
 438
 439         /**
 440          * Builds the enable fields statement
 441          *
 442          * @param string $selectorName The selector name (= database table name)
 443          * @param array &$sql The query parts
 444          * @return void
 445          */
 446         protected function addEnableFieldsStatement($selectorName, array &$sql) {
 447                 // TODO We have to call the appropriate API method if we are in TYPO3BE mode
 448                 if (is_array($GLOBALS['TCA'][$selectorName]['ctrl'])) {
 449                         $statement = substr($GLOBALS['TSFE']->sys_page->enableFields($selectorName), 4);
 450                         if(!empty($statement)) {
 451                                 $sql['enableFields'][] = $statement;
 452                         }
 453                 }
 454         }
 455
 456         /**
 457          * Transforms orderings into SQL
 458          *
 459          * @param array $orderings
 460          * @param array &$sql
 461          * @param array &$parameters
 462          * @param array $boundVariableValues
 463          * @return void
 464          */
 465         protected function parseOrderings(array $orderings = NULL, array &$sql, array &$parameters, array $boundVariableValues) {
 466                 if (is_array($orderings)) {
 467                         foreach ($orderings as $propertyName => $ordering) {
 468                                 // TODO Implement
 469                         }
 470                 }
 471         }
 472
 473         /**
 474          * Transforms a Resource from a database query to an array of rows. Performs the language and
 475          * workspace overlay before.
 476          *
 477          * @return array The result as an array of rows (tuples)
 478          */
 479         protected function getRowsFromResult($tableName, $res) {
 480                 $rows = array();
 481                 while ($row = $this->databaseHandle->sql_fetch_assoc($res)) {
 482                         $row = $this->doLanguageAndWorkspaceOverlay($tableName, $row);
 483                         if (is_array($row)) {
 484                                 // TODO Check if this is necessary, maybe the last line is enough
 485                                 $arrayKeys = range(0,count($row));
 486                                 array_fill_keys($arrayKeys, $row);
 487                                 $rows[] = $row;
 488                         }
 489                 }
 490                 return $rows;
 491         }
 492
 493         /**
 494          * Performs workspace and language overlay on the given row array. The language and workspace id is automatically
 495          * detected (depending on FE or BE context). You can also explicitly set the language/workspace id.
 496          *
 497          * @param Tx_Extbase_Persistence_Mapper_DataMap $dataMap
 498          * @param array $row The row array (as reference)
 499          * @param string $languageUid The language id
 500          * @param string $workspaceUidUid The workspace id
 501          * @return void
 502          */
 503         protected function doLanguageAndWorkspaceOverlay($tableName, array $row, $languageUid = NULL, $workspaceUid = NULL) {
 504                 if (!($this->pageSelectObject instanceof t3lib_pageSelect)) {
 505                         if (TYPO3_MODE == 'FE') {
 506                                 if (is_object($GLOBALS['TSFE'])) {
 507                                         $this->pageSelectObject = $GLOBALS['TSFE']->sys_page;
 508                                         if ($languageUid === NULL) {
 509                                                 $languageUid = $GLOBALS['TSFE']->sys_language_content;
 510                                         }
 511                                 } else {
 512                                         require_once(PATH_t3lib . 'class.t3lib_page.php');
 513                                         $this->pageSelectObject = t3lib_div::makeInstance('t3lib_pageSelect');
 514                                         if ($languageUid === NULL) {
 515                                                 $languageUid = intval(t3lib_div::_GP('L'));
 516                                         }
 517                                 }
 518                                 if ($workspaceUid !== NULL) {
 519                                         $this->pageSelectObject->versioningWorkspaceId = $workspaceUid;
 520                                 }
 521                         } else {
 522                                 require_once(PATH_t3lib . 'class.t3lib_page.php');
 523                                 $this->pageSelectObject = t3lib_div::makeInstance( 't3lib_pageSelect' );
 524                                 //$this->pageSelectObject->versioningPreview =  TRUE;
 525                                 if ($workspaceUid === NULL) {
 526                                         $workspaceUid = $GLOBALS['BE_USER']->workspace;
 527                                 }
 528                                 $this->pageSelectObject->versioningWorkspaceId = $workspaceUid;
 529                         }
 530                 }
 531
 532                 $this->pageSelectObject->versionOL($tableName, $row, TRUE);
 533                 $row = $this->pageSelectObject->getRecordOverlay($tableName, $row, $languageUid, ''); //'hideNonTranslated'
 534                 // TODO Skip if empty languageoverlay (languagevisibility)
 535                 return $row;
 536         }
 537
 538         /**
 539          * Clear the TYPO3 page cache for the given record.
 540          * Much of this functionality is taken from t3lib_tcemain::clear_cache() which unfortunately only works with logged-in BE user.
 541          *
 542          * @param $tableName Table name of the record
 543          * @param $uid UID of the record
 544          * @return void
 545          */
 546         protected function clearPageCache($tableName, $uid) {
 547                 if ($this->automaticCacheClearing !== TRUE) return;
 548
 549                 $pageCache = $GLOBALS['typo3CacheManager']->getCache('cache_pages');
 550                 $pageSectionCache = $GLOBALS['typo3CacheManager']->getCache('cache_pagesection');
 551
 552                 $result = $GLOBALS['TYPO3_DB']->exec_SELECTquery('pid', $tableName, 'uid='.intval($uid));
 553
 554                 $pageIdsToClear = array();
 555                 if ($row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result))      {
 556                         $storagePage = $row['pid'];
 557                         $pageIdsToClear[] = $storagePage;
 558                 }
 559                 if (!$storagePage) {
 560                         return;
 561                 }
 562
 563                 $pageTSConfig = t3lib_BEfunc::getPagesTSconfig($storagePage);
 564
 565                 if ($pageTSConfig['clearCacheCmd'])     {
 566                         $clearCacheCommands = t3lib_div::trimExplode(',',strtolower($TSConfig['clearCacheCmd']),1);
 567                                 $clearCacheCommands = array_unique($clearCacheCommands);
 568                                 foreach ($clearCacheCommands as $clearCacheCommand)     {
 569                                         if (t3lib_div::testInt($clearCacheCommand))     {
 570                                                 $pageIdsToClear[] = $clearCacheCommand;
 571                                         }
 572                                 }
 573                         }
 574
 575                 foreach ($pageIdsToClear as $pageIdToClear) {
 576                         $pageCache->flushByTag('pageId_' . $pageIdToClear);
 577                         $pageSectionCache->flushByTag('pageId_' . $pageIdToClear);
 578                 }
 579         }
 580 }
 581
 582 ?>