typo3/sysext/extbase/Classes/Persistence/Mapper/DataMapper.php

   1 <?php
   2 /***************************************************************
   3  *  Copyright notice
   4  *
   5  *  (c) 2009 Jochen Rau <jochen.rau@typoplanet.de>
   6  *  All rights reserved
   7  *
   8  *  This script is part of the TYPO3 project. The TYPO3 project is
   9  *  free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  The GNU General Public License can be found at
  15  *  http://www.gnu.org/copyleft/gpl.html.
  16  *
  17  *  This script is distributed in the hope that it will be useful,
  18  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  *  GNU General Public License for more details.
  21  *
  22  *  This copyright notice MUST APPEAR in all copies of the script!
  23  ***************************************************************/
  24
  25 /**
  26  * A mapper to map database tables configured in $TCA on domain objects.
  27  *
  28  * @package Extbase
  29  * @subpackage Persistence\Mapper
  30  * @version $ID:$
  31  */
  32 class Tx_Extbase_Persistence_Mapper_DataMapper implements t3lib_Singleton {
  33
  34         /**
  35          * @var Tx_Extbase_Persistence_IdentityMap
  36          */
  37         protected $identityMap;
  38
  39         /**
  40          * @var Tx_Extbase_Reflection_Service
  41          */
  42         protected $reflectionService;
  43
  44         /**
  45          * @var Tx_Extbase_Persistence_QOM_QueryObjectModelFactory
  46          */
  47         protected $QOMFactory;
  48
  49         /**
  50          * @var Tx_Extbase_Persistence_Session
  51          */
  52         protected $persistenceSession;
  53
  54         /**
  55          * A reference to the page select object providing methods to perform language and work space overlays
  56          *
  57          * @var t3lib_pageSelect
  58          **/
  59         protected $pageSelectObject;
  60
  61         /**
  62          * Cached data maps
  63          *
  64          * @var array
  65          **/
  66         protected $dataMaps = array();
  67
  68         /**
  69          * @var Tx_Extbase_Persistence_QueryFactoryInterface
  70          */
  71         protected $queryFactory;
  72
  73         /**
  74          * The TYPO3 reference index object
  75          *
  76          * @var t3lib_refindex
  77          **/
  78         protected $referenceIndex;
  79
  80         /**
  81          * Constructs a new mapper
  82          *
  83          */
  84         public function __construct() {
  85                 $this->queryFactory = t3lib_div::makeInstance('Tx_Extbase_Persistence_QueryFactory');
  86         }
  87
  88         /**
  89          * Injects the identity map
  90          *
  91          * @param Tx_Extbase_Persistence_IdentityMap $identityMap
  92          * @return void
  93          */
  94         public function injectIdentityMap(Tx_Extbase_Persistence_IdentityMap $identityMap) {
  95                 $this->identityMap = $identityMap;
  96         }
  97
  98         /**
  99          * Injects the persistence manager
 100          *
 101          * @param Tx_Extbase_Persistence_ManagerInterface $persistenceManager
 102          * @return void
 103          */
 104         public function injectPersistenceManager(Tx_Extbase_Persistence_ManagerInterface $persistenceManager) {
 105                 $this->QOMFactory = $persistenceManager->getBackend()->getQOMFactory();
 106                 $this->persistenceSession = $persistenceManager->getSession();
 107         }
 108
 109         /**
 110          * Injects the Reflection Service
 111          *
 112          * @param Tx_Extbase_Reflection_Service
 113          * @return void
 114          */
 115         public function injectReflectionService(Tx_Extbase_Reflection_Service $reflectionService) {
 116                 $this->reflectionService = $reflectionService;
 117         }
 118
 119         /**
 120          * Maps the (aggregate root) rows and registers them as reconstituted
 121          * with the session.
 122          *
 123          * @param Tx_Extbase_Persistence_RowIteratorInterface $rows
 124          * @return array
 125          */
 126         public function map($className, Tx_Extbase_Persistence_RowIteratorInterface $rows) {
 127                 $objects = array();
 128                 foreach ($rows as $row) {
 129                         $objects[] = $this->mapSingleRow($className, $row);
 130                 }
 131                 return $objects;
 132         }
 133
 134         /**
 135          * Maps a single node into the object it represents
 136          *
 137          * @param Tx_Extbase_Persistence_RowInterface $node
 138          * @return object
 139          */
 140         protected function mapSingleRow($className, Tx_Extbase_Persistence_RowInterface $row) {
 141                 if ($this->identityMap->hasIdentifier($row['uid'], $className)) {
 142                         $object = $this->identityMap->getObjectByIdentifier($row['uid'], $className);
 143                 } else {
 144                         $object = $this->createEmptyObject($className);
 145                         $this->thawProperties($object, $row);
 146                         $this->identityMap->registerObject($object, $object->getUid());
 147                         $object->_memorizeCleanState();
 148                         $this->persistenceSession->registerReconstitutedObject($object);
 149                 }
 150                 return $object;
 151         }
 152
 153         /**
 154          * Creates a skeleton of the specified object
 155          *
 156          * @param string $className Name of the class to create a skeleton for
 157          * @return object The object skeleton
 158          */
 159         protected function createEmptyObject($className) {
 160                 // Note: The class_implements() function also invokes autoload to assure that the interfaces
 161                 // and the class are loaded. Would end up with __PHP_Incomplete_Class without it.
 162                 if (!in_array('Tx_Extbase_DomainObject_DomainObjectInterface', class_implements($className))) throw new Tx_Extbase_Object_Exception_CannotReconstituteObject('Cannot create empty instance of the class "' . $className . '" because it does not implement the Tx_Extbase_DomainObject_DomainObjectInterface.', 1234386924);
 163                 $object = unserialize('O:' . strlen($className) . ':"' . $className . '":0:{};');
 164                 return $object;
 165         }
 166
 167         /**
 168          * Sets the given properties on the object.
 169          *
 170          * @param Tx_Extbase_DomainObject_DomainObjectInterface $object The object to set properties on
 171          * @param Tx_Extbase_Persistence_RowInterface $row
 172          * @return void
 173          */
 174         protected function thawProperties(Tx_Extbase_DomainObject_DomainObjectInterface $object, Tx_Extbase_Persistence_RowInterface $row) {
 175                 $className = get_class($object);
 176                 $dataMap = $this->getDataMap($className);
 177                 $properties = $object->_getProperties();
 178                 $object->_setProperty('uid', $row['uid']);
 179                 foreach ($properties as $propertyName => $propertyValue) {
 180                         if (!$dataMap->isPersistableProperty($propertyName)) continue;
 181                         $columnMap = $dataMap->getColumnMap($propertyName);
 182                         $columnName = $columnMap->getColumnName();
 183                         $propertyValue = NULL;
 184                         $propertyType = $columnMap->getPropertyType();
 185                         switch ($propertyType) {
 186                                 case Tx_Extbase_Persistence_PropertyType::STRING;
 187                                 case Tx_Extbase_Persistence_PropertyType::DATE;
 188                                 case Tx_Extbase_Persistence_PropertyType::LONG;
 189                                 case Tx_Extbase_Persistence_PropertyType::DOUBLE;
 190                                 case Tx_Extbase_Persistence_PropertyType::BOOLEAN;
 191                                 if (isset($row[$columnName])) {
 192                                         $rawPropertyValue = $row[$columnName];
 193                                         $propertyValue = $dataMap->convertFieldValueToPropertyValue($propertyType, $rawPropertyValue);
 194                                 }
 195                                 break;
 196                                 case (Tx_Extbase_Persistence_PropertyType::REFERENCE):
 197                                         if (!is_null($row[$columnName])) {
 198                                                 $propertyValue = $this->mapRelatedObjects($object, $propertyName, $row, $columnMap);
 199                                         } else {
 200                                                 $propertyValue = NULL;
 201                                         }
 202                                         break;
 203                                         // FIXME we have an object to handle... -> exception
 204                                 default:
 205                                         // SK: We should throw an exception as this point as there was an undefined propertyType we can not handle.
 206                                         if (isset($row[$columnName])) {
 207                                                 $property = $row[$columnName];
 208                                                 if (is_object($property)) {
 209                                                         $propertyValue = $this->mapObject($property);
 210                                                         // SK: THIS case can not happen I think. At least $this->mapObject() is not available.
 211                                                 } else {
 212                                                         // SK: This case does not make sense either. $this-mapSingleRow has a different signature
 213                                                         $propertyValue = $this->mapSingleRow($className, $property);
 214                                                 }
 215                                         }
 216                                         break;
 217                         }
 218
 219                         $object->_setProperty($propertyName, $propertyValue);
 220                 }
 221         }
 222
 223         /**
 224          * Maps related objects to an ObjectStorage
 225          *
 226          * @param object $parentObject The parent object for the mapping result
 227          * @param string $propertyName The target property name for the mapping result
 228          * @param Tx_Extbase_Persistence_RowInterface $row The actual database row
 229          * @param int $loadingStrategy The loading strategy; one of Tx_Extbase_Persistence_Mapper_ColumnMap::STRATEGY_*
 230          * @return array|Tx_Extbase_Persistence_ObjectStorage|Tx_Extbase_Persistence_LazyLoadingProxy|another implementation of a loading strategy
 231          */
 232         protected function mapRelatedObjects(Tx_Extbase_DomainObject_AbstractEntity $parentObject, $propertyName, Tx_Extbase_Persistence_RowInterface $row, Tx_Extbase_Persistence_Mapper_ColumnMap $columnMap) {
 233                 $dataMap = $this->getDataMap(get_class($parentObject));
 234                 $columnMap = $dataMap->getColumnMap($propertyName);
 235                 $targetClassSchema = $this->reflectionService->getClassSchema(get_class($parentObject));
 236                 $propertyMetaData = $targetClassSchema->getProperty($propertyName);
 237                 $fieldValue = $row[$columnMap->getColumnName()];
 238                 if ($columnMap->getLoadingStrategy() === Tx_Extbase_Persistence_Mapper_ColumnMap::STRATEGY_LAZY_PROXY) {
 239                         $result = t3lib_div::makeInstance('Tx_Extbase_Persistence_LazyLoadingProxy', $parentObject, $propertyName, $fieldValue, $columnMap);
 240                 } else {
 241                         $queryFactory = t3lib_div::makeInstance('Tx_Extbase_Persistence_QueryFactory');
 242                         if ($columnMap->getTypeOfRelation() === Tx_Extbase_Persistence_Mapper_ColumnMap::RELATION_HAS_ONE) {
 243                                 $query = $queryFactory->create($columnMap->getChildClassName());
 244                                 // TODO: This is an ugly hack, just ignoring the storage page state from here. Actually, the query settings would have to be passed into the DataMapper, so we can respect
 245                                 // enableFields and storage page settings.
 246                                 $query->getQuerySettings()->setRespectStoragePage(FALSE);
 247                                 $result = current($query->matching($query->withUid((int)$fieldValue))->execute());
 248                         } elseif (($columnMap->getTypeOfRelation() === Tx_Extbase_Persistence_Mapper_ColumnMap::RELATION_HAS_MANY) || ($columnMap->getTypeOfRelation() === Tx_Extbase_Persistence_Mapper_ColumnMap::RELATION_HAS_AND_BELONGS_TO_MANY)) {
 249                                 if ($propertyMetaData['lazy'] === TRUE || $columnMap->getLoadingStrategy() === Tx_Extbase_Persistence_Mapper_ColumnMap::STRATEGY_LAZY_STORAGE) {
 250                                         $result = new Tx_Extbase_Persistence_LazyObjectStorage($parentObject, $propertyName, $fieldValue, $columnMap);
 251                                 } else {
 252                                         $objects = $this->fetchRelatedObjects($parentObject, $propertyName, $fieldValue, $columnMap);
 253                                         if ($propertyMetaData['type'] === 'ArrayObject') {
 254                                                 $result = new ArrayObject($objects);
 255                                         } elseif ($propertyMetaData['type'] === 'Tx_Extbase_Persistence_ObjectStorage' || $propertyMetaData['type'] === 'Tx_Extbase_Persistence_LazyObjectStorage') {
 256                                                 $result = new Tx_Extbase_Persistence_ObjectStorage();
 257                                                 foreach ($objects as $object) {
 258                                                         $result->attach($object);
 259                                                 }
 260                                         } else {
 261                                                 $result = $objects;
 262                                         }
 263                                 }
 264                         }
 265                 }
 266                 return $result;
 267         }
 268
 269         /**
 270          * Fetches a collection of objects related to a property of a parent object
 271          *
 272          * @param Tx_Extbase_DomainObject_AbstractEntity $parentObject The object instance this proxy is part of
 273          * @param string $propertyName The name of the proxied property in it's parent
 274          * @param mixed $fieldValue The raw field value.
 275          * @param Tx_Extbase_Persistence_Mapper_DataMap $dataMap The corresponding Data Map of the property
 276          * @return Tx_Extbase_Persistence_ObjectStorage An Object Storage containing the related objects
 277          */
 278         public function fetchRelatedObjects(Tx_Extbase_DomainObject_AbstractEntity $parentObject, $propertyName, $fieldValue, Tx_Extbase_Persistence_Mapper_ColumnMap $columnMap) {
 279                 $queryFactory = t3lib_div::makeInstance('Tx_Extbase_Persistence_QueryFactory');
 280                 $objects = NULL;
 281                 if ($columnMap->getTypeOfRelation() === Tx_Extbase_Persistence_Mapper_ColumnMap::RELATION_HAS_MANY) {
 282                         $query = $queryFactory->create($columnMap->getChildClassName());
 283                         $parentKeyFieldName = $columnMap->getParentKeyFieldName();
 284                         if (isset($parentKeyFieldName)) {
 285                                 $objects = $query->matching($query->equals($columnMap->getParentKeyFieldName(), $parentObject->getUid()))->execute();
 286                         } else {
 287                                 $uidArray = t3lib_div::intExplode(',', $fieldValue);
 288                                 $uids = implode(',', $uidArray);
 289                                 // FIXME Using statement() is only a preliminary solution
 290                                 $objects = $query->statement('SELECT * FROM ' . $columnMap->getChildTableName() . ' WHERE uid IN (' . $uids . ')')->execute();
 291                         }
 292                 } elseif ($columnMap->getTypeOfRelation() === Tx_Extbase_Persistence_Mapper_ColumnMap::RELATION_HAS_AND_BELONGS_TO_MANY) {
 293                         $relationTableName = $columnMap->getRelationTableName();
 294                         $left = $this->QOMFactory->selector(NULL, $relationTableName);
 295                         $childClassName = $columnMap->getChildClassName();
 296                         $childTableName = $columnMap->getChildTableName();
 297                         $right = $this->QOMFactory->selector($childClassName, $childTableName);
 298                         $joinCondition = $this->QOMFactory->equiJoinCondition($relationTableName, $columnMap->getChildKeyFieldName(), $childTableName, 'uid');
 299                         $source = $this->QOMFactory->join(
 300                                 $left,
 301                                 $right,
 302                                 Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_JOIN_TYPE_INNER,
 303                                 $joinCondition
 304                                 );
 305                         $query = $queryFactory->create($columnMap->getChildClassName());
 306                         $query->setSource($source);
 307                         $query->setOrderings(array($columnMap->getChildSortByFieldName() => Tx_Extbase_Persistence_QueryInterface::ORDER_ASCENDING));
 308                         // TODO: This is an ugly hack, just ignoring the storage page state from here. Actually, the query settings would have to be passed into the DataMapper, so we can respect
 309                         // enableFields and storage page settings.
 310                         $query->getQuerySettings()->setRespectStoragePage(FALSE);
 311                         $objects = $query->matching($query->equals($columnMap->getParentKeyFieldName(), $parentObject->getUid()))->execute();
 312                 } else {
 313                         throw new Tx_Extbase_Persistence_Exception('Could not determine type of relation.', 1252502725);
 314                 }
 315                 return $objects;
 316         }
 317
 318         /**
 319          * Delegates the call to the Data Map.
 320          * Returns TRUE if the property is persistable (configured in $TCA)
 321          *
 322          * @param string $className The property name
 323          * @param string $propertyName The property name
 324          * @return boolean TRUE if the property is persistable (configured in $TCA)
 325          */
 326         public function isPersistableProperty($className, $propertyName) {
 327                 $dataMap = $this->getDataMap($className);
 328                 return $dataMap->isPersistableProperty($propertyName);
 329         }
 330
 331         /**
 332          * Returns a data map for a given class name
 333          *
 334          * @return Tx_Extbase_Persistence_Mapper_DataMap The data map
 335          */
 336         public function getDataMap($className) {
 337                 if (!is_string($className) || strlen($className) === 0) throw new Tx_Extbase_Persistence_Exception('No class name was given to retrieve the Data Map for.', 1251315965);
 338                 if (!isset($this->dataMaps[$className])) {
 339                         // FIXME This is too expensive for table name aliases -> implement a DataMapBuilder (knowing the aliases defined in $TCA)
 340                         $columnMapping = array();
 341                         $tableName = '';
 342                         $extbaseSettings = Tx_Extbase_Dispatcher::getExtbaseFrameworkConfiguration();
 343                         if (is_array($extbaseSettings['persistence']['classes'][$className])) {
 344                                 $persistenceSettings = $extbaseSettings['persistence']['classes'][$className];
 345                                 if (is_string($persistenceSettings['mapping']['tableName']) && strlen($persistenceSettings['mapping']['tableName']) > 0) {
 346                                         $tableName = $persistenceSettings['mapping']['tableName'];
 347                                 }
 348                                 if (is_array($persistenceSettings['mapping']['columns'])) {
 349                                         $columnMapping = $persistenceSettings['mapping']['columns'];
 350                                 }
 351                         } else {
 352                                 foreach (class_parents($className) as $parentClassName) {
 353                                         $persistenceSettings = $extbaseSettings['persistence']['classes'][$parentClassName];
 354                                         if (is_array($persistenceSettings)) {
 355                                                 if (is_string($persistenceSettings['mapping']['tableName']) && strlen($persistenceSettings['mapping']['tableName']) > 0) {
 356                                                         $tableName = $persistenceSettings['mapping']['tableName'];
 357                                                 }
 358                                                 if (is_array($persistenceSettings['mapping']['columns'])) {
 359                                                         $columnMapping = $persistenceSettings['mapping']['columns'];
 360                                                 }
 361                                         }
 362                                         break;
 363                                 }
 364                         }
 365                         if (strlen($className) === 0) throw new Tx_Extbase_Persistence_Exception('Could not determine table name for given class.', 1256067130);
 366
 367                         $dataMap = new Tx_Extbase_Persistence_Mapper_DataMap($className, $tableName, $columnMapping);
 368                         $this->dataMaps[$className] = $dataMap;
 369                 }
 370                 return $this->dataMaps[$className];
 371         }
 372
 373         /**
 374          * Returns the selector (table) name for a given class name.
 375          *
 376          * @param string $className
 377          * @return string The selector name
 378          */
 379         public function convertClassNameToTableName($className) {
 380                 return $this->getDataMap($className)->getTableName();
 381         }
 382
 383         /**
 384          * Returns the column name for a given property name of the specified class.
 385          *
 386          * @param string $className
 387          * @param string $propertyName
 388          * @return string The column name
 389          */
 390         public function convertPropertyNameToColumnName($propertyName, $className = '') {
 391                 if (!empty($className)) {
 392                         $dataMap = $this->getDataMap($className);
 393                         if ($dataMap !== NULL) {
 394                                 $columnMap = $dataMap->getColumnMap($propertyName);
 395                                 if ($columnMap !== NULL) {
 396                                         return $columnMap->getColumnName();
 397                                 }
 398                         }
 399                 }
 400                 return Tx_Extbase_Utility_Extension::convertCamelCaseToLowerCaseUnderscored($propertyName);
 401         }
 402
 403 }
 404 ?>