Session.php

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<?php
namespace TYPO3\CMS\Extbase\Persistence\Generic;

use TYPO3\CMS\Extbase\Persistence\ObjectStorage;

class Session implements \TYPO3\CMS\Core\SingletonInterface {

    protected $reconstitutedEntities;

    protected $reconstitutedEntitiesData = array();

    protected $objectMap;

    protected $identifierMap = array();

    protected $reflectionService;

    public function __construct() {
        $this->reconstitutedEntities = new ObjectStorage();
        $this->objectMap = new ObjectStorage();
    }

    public function registerReconstitutedEntity($entity, array $entityData = array()) {
        $this->reconstitutedEntities->attach($entity);
        $this->reconstitutedEntitiesData[$entityData['identifier']] = $entityData;
    }

    public function replaceReconstitutedEntity($oldEntity, $newEntity) {
        $this->reconstitutedEntities->detach($oldEntity);
        $this->reconstitutedEntities->attach($newEntity);
    }

    public function unregisterReconstitutedEntity($entity) {
        if ($this->reconstitutedEntities->contains($entity)) {
            $this->reconstitutedEntities->detach($entity);
            unset($this->reconstitutedEntitiesData[$this->getIdentifierByObject($entity)]);
        }
    }

    public function getReconstitutedEntities() {
        return $this->reconstitutedEntities;
    }

    public function isReconstitutedEntity($entity) {
        return $this->reconstitutedEntities->contains($entity);
    }

    // TODO implement the is dirty checking behaviour of the Flow persistence session here

    public function hasObject($object) {
        return $this->objectMap->contains($object);
    }

    public function hasIdentifier($identifier, $className) {
        return isset($this->identifierMap[strtolower($className)][$identifier]);
    }

    public function getObjectByIdentifier($identifier, $className) {
        return $this->identifierMap[strtolower($className)][$identifier];
    }

    public function getIdentifierByObject($object) {
        if ($this->hasObject($object)) {
            return $this->objectMap[$object];
        }
        return NULL;
    }

    public function registerObject($object, $identifier) {
        $this->objectMap[$object] = $identifier;
        $this->identifierMap[strtolower(get_class($object))][$identifier] = $object;
    }

    public function unregisterObject($object) {
        unset($this->identifierMap[strtolower(get_class($object))][$this->objectMap[$object]]);
        $this->objectMap->detach($object);
    }

    public function destroy() {
        $this->identifierMap = array();
        $this->objectMap = new ObjectStorage();
        $this->reconstitutedEntities = new ObjectStorage();
        $this->reconstitutedEntitiesData = array();
    }

}