Examples of CollectionPersister

org.hibernate.persister.collection.CollectionPersister
A strategy for persisting a collection role. Defines a contract between the persistence strategy and the actual persistent collection framework and session. Does not define operations that are required for querying collections, or loading by outer join.

Implements persistence of a collection instance while the instance is referenced in a particular role.

This class is highly coupled to the PersistentCollection hierarchy, since double dispatch is used to load and update collection elements.

May be considered an immutable view of the mapping object @see QueryableCollection @see PersistentCollection @author Gavin King

Examples of org.hibernate.persister.collection.CollectionPersister

  private static void processDereferencedCollection(PersistentCollection coll, SessionImplementor session)
  throws HibernateException {


    final PersistenceContext persistenceContext = session.getPersistenceContext();
    CollectionEntry entry = persistenceContext.getCollectionEntry(coll);
    final CollectionPersister loadedPersister = entry.getLoadedPersister();


    if ( log.isDebugEnabled() && loadedPersister != null )
      log.debug(
          "Collection dereferenced: " +
          MessageHelper.collectionInfoString(
              loadedPersister,
                  entry.getLoadedKey(),
                  session.getFactory()
            )
        );


    // do a check
    boolean hasOrphanDelete = loadedPersister != null &&
                              loadedPersister.hasOrphanDelete();
    if (hasOrphanDelete) {
      Serializable ownerId = loadedPersister.getOwnerEntityPersister()
          .getIdentifier( coll.getOwner(), session.getEntityMode() );
      if ( ownerId == null ) {
        // the owning entity may have been deleted and its identifier unset due to
        // identifier-rollback; in which case, try to look up its identifier from
        // the persistence context
        if ( session.getFactory().getSettings().isIdentifierRollbackEnabled() ) {
          EntityEntry ownerEntry = persistenceContext.getEntry( coll.getOwner() );
          if ( ownerEntry != null ) {
            ownerId = ownerEntry.getId();
          }
        }
        if ( ownerId == null ) {
          throw new AssertionFailure( "Unable to determine collection owner identifier for orphan-delete processing" );
        }
      }
      EntityKey key = new EntityKey(
          ownerId,
              loadedPersister.getOwnerEntityPersister(),
              session.getEntityMode()
      );
      Object owner = persistenceContext.getEntity(key);
      if ( owner == null ) {
        throw new AssertionFailure(
            "collection owner not associated with session: " +
            loadedPersister.getRole()
        );
      }
      EntityEntry e = persistenceContext.getEntry(owner);
      //only collections belonging to deleted entities are allowed to be dereferenced in the case of orphan delete
      if ( e != null && e.getStatus() != Status.DELETED && e.getStatus() != Status.GONE ) {
        throw new HibernateException(
            "A collection with cascade=\"all-delete-orphan\" was no longer referenced by the owning entity instance: " +
            loadedPersister.getRole()
        );
      }
    }


    // do the work

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Examples of org.hibernate.persister.collection.CollectionPersister

      );
    }
    ce.setReached(true);


    SessionFactoryImplementor factory = session.getFactory();
    CollectionPersister persister = factory.getCollectionPersister( type.getRole() );
    ce.setCurrentPersister(persister);
    ce.setCurrentKey( type.getKeyOfOwner(entity, session) ); //TODO: better to pass the id in as an argument?


    if ( log.isDebugEnabled() ) {
      log.debug(

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Examples of org.hibernate.persister.collection.CollectionPersister

    if ( entry.isProcessed() ) {
      throw new AssertionFailure( "collection was processed twice by flush()" );
    }
    entry.setProcessed(true);


    final CollectionPersister loadedPersister = entry.getLoadedPersister();
    final CollectionPersister currentPersister = entry.getCurrentPersister();
    if ( loadedPersister != null || currentPersister != null ) {          // it is or was referenced _somewhere_


      boolean ownerChanged = loadedPersister != currentPersister ||        // if either its role changed,
                             !currentPersister
                                 .getKeyType().isEqual(                       // or its key changed
                          entry.getLoadedKey(),
                                              entry.getCurrentKey(),
                                              entityMode, factory
                             );

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Examples of org.hibernate.persister.collection.CollectionPersister

    if (collection==null) {
      //do nothing
      return null;
    }
    else {
      CollectionPersister persister = session.getFactory().getCollectionPersister( collectionType.getRole() );


      final PersistenceContext persistenceContext = session.getPersistenceContext();
      //TODO: move into collection type, so we can use polymorphism!
      if ( collectionType.hasHolder( session.getEntityMode() ) ) {

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Examples of org.hibernate.persister.collection.CollectionPersister

   * located.
   */
  public Serializable getOwnerId(String entityName, String propertyName, Object childEntity, Map mergeMap) {
    final String collectionRole = entityName + '.' + propertyName;
    final EntityPersister persister = session.getFactory().getEntityPersister( entityName );
    final CollectionPersister collectionPersister = session.getFactory().getCollectionPersister( collectionRole );


    // iterate all the entities currently associated with the persistence context.
    Iterator entities = entityEntries.entrySet().iterator();
    while ( entities.hasNext() ) {
      final Map.Entry me = ( Map.Entry ) entities.next();

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Examples of org.hibernate.persister.collection.CollectionPersister

   */
  public Object getIndexInOwner(String entity, String property, Object childEntity, Map mergeMap) {


    EntityPersister persister = session.getFactory()
        .getEntityPersister(entity);
    CollectionPersister cp = session.getFactory()
        .getCollectionPersister(entity + '.' + property);
    Iterator entities = entityEntries.entrySet().iterator();
    while ( entities.hasNext() ) {
      Map.Entry me = (Map.Entry) entities.next();
      EntityEntry ee = (EntityEntry) me.getValue();

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Examples of org.hibernate.persister.collection.CollectionPersister

    return userType.indexOf(collection, entity);
  }


  public Object replaceElements(Object original, Object target, Object owner, Map copyCache, SessionImplementor session)
  throws HibernateException {
    CollectionPersister cp = session.getFactory().getCollectionPersister( getRole() );
    return userType.replaceElements(original, target, cp, owner, copyCache, session);
  }

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Examples of org.hibernate.persister.collection.CollectionPersister

    if ( collection == CollectionType.UNFETCHED_COLLECTION ) {
      return null;
    }


    EventSource session = getSession();
    CollectionPersister persister = session.getFactory().getCollectionPersister( type.getRole() );


    if ( isUpdate ) {
      removeCollection( persister, extractCollectionKeyFromOwner( persister ), session );
    }
    if ( collection != null && ( collection instanceof PersistentCollection ) ) {

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Examples of org.hibernate.persister.collection.CollectionPersister

        CollectionRegion collectionRegion = settings.getRegionFactory().buildCollectionRegion( cacheRegionName, properties, CacheDataDescriptionImpl.decode( model ) );
        accessStrategy = collectionRegion.buildAccessStrategy( accessType );
        entityAccessStrategies.put( cacheRegionName, accessStrategy );
        allCacheRegions.put( cacheRegionName, collectionRegion );
      }
      CollectionPersister persister = PersisterFactory.createCollectionPersister( cfg, model, accessStrategy, this) ;
      collectionPersisters.put( model.getRole(), persister.getCollectionMetadata() );
      Type indexType = persister.getIndexType();
      if ( indexType != null && indexType.isAssociationType() && !indexType.isAnyType() ) {
        String entityName = ( ( AssociationType ) indexType ).getAssociatedEntityName( this );
        Set roles = ( Set ) tmpEntityToCollectionRoleMap.get( entityName );
        if ( roles == null ) {
          roles = new HashSet();
          tmpEntityToCollectionRoleMap.put( entityName, roles );
        }
        roles.add( persister.getRole() );
      }
      Type elementType = persister.getElementType();
      if ( elementType.isAssociationType() && !elementType.isAnyType() ) {
        String entityName = ( ( AssociationType ) elementType ).getAssociatedEntityName( this );
        Set roles = ( Set ) tmpEntityToCollectionRoleMap.get( entityName );
        if ( roles == null ) {
          roles = new HashSet();
          tmpEntityToCollectionRoleMap.put( entityName, roles );
        }
        roles.add( persister.getRole() );
      }
    }
    collectionMetadata = Collections.unmodifiableMap(collectionPersisters);
    Iterator itr = tmpEntityToCollectionRoleMap.entrySet().iterator();
    while ( itr.hasNext() ) {

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Examples of org.hibernate.persister.collection.CollectionPersister

    }
    return result;
  }


  public CollectionPersister getCollectionPersister(String role) throws MappingException {
    CollectionPersister result = (CollectionPersister) collectionPersisters.get(role);
    if (result==null) {
      throw new MappingException( "Unknown collection role: " + role );
    }
    return result;
  }

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