Examples of org.hibernate.persister.collection.CollectionPersister

Package org.hibernate.persister.collection

Examples of org.hibernate.persister.collection.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


        final Object owner = hasCollectionOwners ?
            row[ collectionOwners[i] ] :
            null; //if null, owner will be retrieved from session


        final CollectionPersister collectionPersister = collectionPersisters[i];
        final Serializable key;
        if ( owner == null ) {
          key = null;
        }
        else {
          key = collectionPersister.getCollectionType().getKeyOfOwner( owner, session );
          //TODO: old version did not require hashmap lookup:
          //keys[collectionOwner].getIdentifier()
        }


        readCollectionElement(

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        return true;
      }
      else {
        throwLazyInitializationExceptionIfNotConnected();
        CollectionEntry entry = session.getPersistenceContext().getCollectionEntry(this);
        CollectionPersister persister = entry.getLoadedPersister();
        if ( persister.isExtraLazy() ) {
          if ( hasQueuedOperations() ) {
            session.flush();
          }
          cachedSize = persister.getSize( entry.getLoadedKey(), session );
          return true;
        }
      }
    }
    read();

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  protected Boolean readIndexExistence(Object index) {
    if (!initialized) {
      throwLazyInitializationExceptionIfNotConnected();
      CollectionEntry entry = session.getPersistenceContext().getCollectionEntry(this);
      CollectionPersister persister = entry.getLoadedPersister();
      if ( persister.isExtraLazy() ) {
        if ( hasQueuedOperations() ) {
          session.flush();
        }
        return new Boolean( persister.indexExists( entry.getLoadedKey(), index, session ) );
      }
    }
    read();
    return null;

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  protected Boolean readElementExistence(Object element) {
    if (!initialized) {
      throwLazyInitializationExceptionIfNotConnected();
      CollectionEntry entry = session.getPersistenceContext().getCollectionEntry(this);
      CollectionPersister persister = entry.getLoadedPersister();
      if ( persister.isExtraLazy() ) {
        if ( hasQueuedOperations() ) {
          session.flush();
        }
        return new Boolean( persister.elementExists( entry.getLoadedKey(), element, session ) );
      }
    }
    read();
    return null;

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  protected Object readElementByIndex(Object index) {
    if (!initialized) {
      throwLazyInitializationExceptionIfNotConnected();
      CollectionEntry entry = session.getPersistenceContext().getCollectionEntry(this);
      CollectionPersister persister = entry.getLoadedPersister();
      if ( persister.isExtraLazy() ) {
        if ( hasQueuedOperations() ) {
          session.flush();
        }
        return persister.getElementByIndex( entry.getLoadedKey(), index, session, owner );
      }
    }
    read();
    return UNKNOWN;

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  }


  public void execute() throws HibernateException {
    final Serializable id = getKey();
    final SessionImplementor session = getSession();
    final CollectionPersister persister = getPersister();
    final PersistentCollection collection = getCollection();
    boolean affectedByFilters = persister.isAffectedByEnabledFilters(session);


    preUpdate();


    if ( !collection.wasInitialized() ) {
      if ( !collection.hasQueuedOperations() ) throw new AssertionFailure( "no queued adds" );
      //do nothing - we only need to notify the cache...
    }
    else if ( !affectedByFilters && collection.empty() ) {
      if ( !emptySnapshot ) persister.remove( id, session );
    }
    else if ( collection.needsRecreate(persister) ) {
      if (affectedByFilters) {
        throw new HibernateException(
          "cannot recreate collection while filter is enabled: " + 
          MessageHelper.collectionInfoString( persister, id, persister.getFactory() )
        );
      }
      if ( !emptySnapshot ) persister.remove( id, session );
      persister.recreate( collection, id, session );
    }
    else {
      persister.deleteRows( collection, id, session );
      persister.updateRows( collection, id, session );
      persister.insertRows( collection, id, session );
    }


    getSession().getPersistenceContext()
      .getCollectionEntry(collection)
      .afterAction(collection);

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


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


    final Serializable collectionKey = extractCollectionKeyFromOwner( persister );
    if ( collection!=null && (collection instanceof PersistentCollection) ) {
      PersistentCollection wrapper = (PersistentCollection) collection;
      if ( wrapper.setCurrentSession(session) ) {

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  }


  Object processCollection(Object collection, CollectionType type) throws HibernateException {


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


    if ( collection == null ) {
      //do nothing
    }
    else if ( collection instanceof PersistentCollection ) {

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        final Object owner = hasCollectionOwners ?
            row[ collectionOwners[i] ] :
            null; //if null, owner will be retrieved from session


        final CollectionPersister collectionPersister = collectionPersisters[i];
        final Serializable key;
        if ( owner == null ) {
          key = null;
        }
        else {
          key = collectionPersister.getCollectionType().getKeyOfOwner( owner, session );
          //TODO: old version did not require hashmap lookup:
          //keys[collectionOwner].getIdentifier()
        }
  
        readCollectionElement(

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  private void cascadeCollection(
      final Object child,
      final CascadeStyle style,
      final Object anything,
      final CollectionType type) {
    CollectionPersister persister = eventSource.getFactory()
        .getCollectionPersister( type.getRole() );
    Type elemType = persister.getElementType();


    final int oldCascadeTo = cascadeTo;
    if ( cascadeTo==AFTER_INSERT_BEFORE_DELETE) {
      cascadeTo = AFTER_INSERT_BEFORE_DELETE_VIA_COLLECTION;
    }


    //cascade to current collection elements
    if ( elemType.isEntityType() || elemType.isAnyType() || elemType.isComponentType() ) {
      cascadeCollectionElements(
        child,
        type,
        style,
        elemType,
        anything,
        persister.isCascadeDeleteEnabled()
      );
    }


    cascadeTo = oldCascadeTo;
  }

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org.hibernate.action.BulkOperationCleanupAction

org.hibernate.action.CollectionUpdateAction

org.hibernate.action.internal.BulkOperationCleanupAction

org.hibernate.action.internal.CollectionUpdateAction

org.hibernate.action.internal.QueuedOperationCollectionAction

org.hibernate.cache.internal.CollectionCacheInvalidator

org.hibernate.collection.AbstractPersistentCollection

org.hibernate.collection.internal.AbstractPersistentCollection

org.hibernate.collection.internal.ExtraLazyElementByIndexReader

org.hibernate.engine.Cascade

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