Examples of org.hibernate.engine.PersistenceContext

org.hibernate.engine.PersistenceContext
Holds the state of the persistence context, including the first-level cache, entries, snapshots, proxies, etc. @author Gavin King

    if ( !persister.hasProxy() ) {
      // this class has no proxies (so do a shortcut)
      return load(event, persister, keyToLoad, options);
    }
    else {
      final PersistenceContext persistenceContext = event.getSession().getPersistenceContext();


      // look for a proxy
      Object proxy = persistenceContext.getProxy(keyToLoad);
      if ( proxy != null ) {
        return returnNarrowedProxy( event, persister, keyToLoad, options, persistenceContext, proxy );
      }
      else {
        if ( options.isAllowProxyCreation() ) {

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      );
    
    Object version = Versioning.getVersion( values, subclassPersister );
    if ( log.isTraceEnabled() ) log.trace( "Cached Version: " + version );
    
    final PersistenceContext persistenceContext = session.getPersistenceContext();
    persistenceContext.addEntry( 
        result, 
        Status.MANAGED, 
        values, 
        null, 
        id, 
        version, 
        LockMode.NONE, 
        true, 
        subclassPersister, 
        false, 
        entry.areLazyPropertiesUnfetched() 
      );
    subclassPersister.afterInitialize( result, entry.areLazyPropertiesUnfetched(), session );
    persistenceContext.initializeNonLazyCollections();
    // upgrade the lock if necessary:
    //lock(result, lockMode);


    //PostLoad is needed for EJB3
    //TODO: reuse the PostLoadEvent...

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  private List doQueryAndInitializeNonLazyCollections(final SessionImplementor session,
                            final QueryParameters queryParameters,
                            final boolean returnProxies) 
    throws HibernateException, SQLException {


    final PersistenceContext persistenceContext = session.getPersistenceContext();
    persistenceContext.beforeLoad();
    List result;
    try {
      result = doQuery( session, queryParameters, returnProxies );
    }
    finally {
      persistenceContext.afterLoad();
    }
    persistenceContext.initializeNonLazyCollections();
    return result;
  }

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        int owner = owners[i];
        if ( owner > -1 ) {
          EntityKey ownerKey = keys[owner];
          if ( keys[i] == null && ownerKey != null ) {
            
            final PersistenceContext persistenceContext = session.getPersistenceContext();
            
            /*final boolean isPrimaryKey;
            final boolean isSpecialOneToOne;
            if ( ownerAssociationTypes == null || ownerAssociationTypes[i] == null ) {
              isPrimaryKey = true;
              isSpecialOneToOne = false;
            }
            else {
              isPrimaryKey = ownerAssociationTypes[i].getRHSUniqueKeyPropertyName()==null;
              isSpecialOneToOne = ownerAssociationTypes[i].getLHSPropertyName()!=null;
            }*/
            
            //TODO: can we *always* use the "null property" approach for everything?
            /*if ( isPrimaryKey && !isSpecialOneToOne ) {
              persistenceContext.addNonExistantEntityKey( 
                  new EntityKey( ownerKey.getIdentifier(), persisters[i], session.getEntityMode() ) 
              );
            }
            else if ( isSpecialOneToOne ) {*/
            boolean isOneToOneAssociation = ownerAssociationTypes!=null && 
                ownerAssociationTypes[i]!=null && 
                ownerAssociationTypes[i].isOneToOne();
            if ( isOneToOneAssociation ) {
              persistenceContext.addNullProperty( ownerKey, 
                  ownerAssociationTypes[i].getPropertyName() );
            }
            /*}
            else {
              persistenceContext.addNonExistantEntityUniqueKey( new EntityUniqueKey(

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    if ( !isSubselectLoadable() ) {
      return null;
    }
    
    final PersistenceContext persistenceContext = session.getPersistenceContext();
    
    SubselectFetch subselect = persistenceContext.getBatchFetchQueue()
      .getSubselect( new EntityKey( key, getOwnerEntityPersister(), session.getEntityMode() ) );
    
    if (subselect == null) {
      return null;
    }
    else {
      
      // Take care of any entities that might have
      // been evicted!  
      Iterator iter = subselect.getResult().iterator();
      while ( iter.hasNext() ) {
        if ( !persistenceContext.containsEntity( (EntityKey) iter.next() ) ) {
          iter.remove();
        }
      }  
      
      // Run a subquery loader

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    //postDelete:
    // After actually deleting a row, record the fact that the instance no longer 
    // exists on the database (needed for identity-column key generation), and
    // remove it from the session cache
    final PersistenceContext persistenceContext = session.getPersistenceContext();
    EntityEntry entry = persistenceContext.removeEntry( instance );
    if ( entry == null ) {
      throw new AssertionFailure( "possible nonthreadsafe access to session" );
    }
    entry.postDelete();


    EntityKey key = new EntityKey( entry.getId(), entry.getPersister(), session.getEntityMode() );
    persistenceContext.removeEntity(key);
    persistenceContext.removeProxy(key);
    
    if ( persister.hasCache() ) persister.getCacheAccessStrategy().remove( ck );


    postDelete();

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    }


    SessionImplementor sessionImplementor = (SessionImplementor) session;
    String entityName = session.getSessionFactory().getClassMetadata( entityType ).getEntityName();
    EntityPersister persister = sessionImplementor.getFactory().getEntityPersister( entityName );
    PersistenceContext persistenceContext = sessionImplementor.getPersistenceContext();


    //check the persistence context
    List<EntityInfo> remainingEntityInfos = new ArrayList<EntityInfo>( entityInfos.length );
    for ( EntityInfo entityInfo : entityInfos ) {
      if ( ObjectLoaderHelper.areDocIdAndEntityIdIdentical( entityInfo, session ) ) {
        EntityKey entityKey = new EntityKey( entityInfo.getId(), persister, session.getEntityMode() );
        final boolean isInitialized = persistenceContext.containsEntity( entityKey );
        if ( !isInitialized ) {
          remainingEntityInfos.add( entityInfo );
        }
      }
      else {

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    if ( !persister.hasProxy() ) {
      // this class has no proxies (so do a shortcut)
      return load(event, persister, keyToLoad, options);
    }
    else {
      final PersistenceContext persistenceContext = event.getSession().getPersistenceContext();


      // look for a proxy
      Object proxy = persistenceContext.getProxy(keyToLoad);
      if ( proxy != null ) {
        return returnNarrowedProxy( event, persister, keyToLoad, options, persistenceContext, proxy );
      }
      else {
        if ( options.isAllowProxyCreation() ) {

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    );


    Object version = Versioning.getVersion( values, subclassPersister );
    if ( log.isTraceEnabled() ) log.trace( "Cached Version: " + version );


    final PersistenceContext persistenceContext = session.getPersistenceContext();
    boolean isReadOnly = session.isDefaultReadOnly();
    if ( persister.isMutable() ) {
      Object proxy = persistenceContext.getProxy( entityKey );
      if ( proxy != null ) {
        // there is already a proxy for this impl
        // only set the status to read-only if the proxy is read-only
        isReadOnly = ( ( HibernateProxy ) proxy ).getHibernateLazyInitializer().isReadOnly();
      }
    }
    else {
      isReadOnly = true;
    }
    persistenceContext.addEntry(
        result,
        ( isReadOnly ? Status.READ_ONLY : Status.MANAGED ),
        values,
        null,
        id,
        version,
        LockMode.NONE,
        true,
        subclassPersister,
        false,
        entry.areLazyPropertiesUnfetched()
      );
    subclassPersister.afterInitialize( result, entry.areLazyPropertiesUnfetched(), session );
    persistenceContext.initializeNonLazyCollections();
    // upgrade the lock if necessary:
    //lock(result, lockMode);


    //PostLoad is needed for EJB3
    //TODO: reuse the PostLoadEvent...

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   */
  private List doQueryAndInitializeNonLazyCollections(
      final SessionImplementor session,
      final QueryParameters queryParameters,
      final boolean returnProxies) throws HibernateException, SQLException {
    final PersistenceContext persistenceContext = session.getPersistenceContext();
    boolean defaultReadOnlyOrig = persistenceContext.isDefaultReadOnly();
    if ( queryParameters.isReadOnlyInitialized() ) {
      // The read-only/modifiable mode for the query was explicitly set.
      // Temporarily set the default read-only/modifiable setting to the query's setting.
      persistenceContext.setDefaultReadOnly( queryParameters.isReadOnly() );
    }
    else {
      // The read-only/modifiable setting for the query was not initialized.
      // Use the default read-only/modifiable from the persistence context instead.
      queryParameters.setReadOnly( persistenceContext.isDefaultReadOnly() );
    }
    persistenceContext.beforeLoad();
    List result;
    try {
      try {
        result = doQuery( session, queryParameters, returnProxies );
      }
      finally {
        persistenceContext.afterLoad();
      }
      persistenceContext.initializeNonLazyCollections();
    }
    finally {
      // Restore the original default
      persistenceContext.setDefaultReadOnly( defaultReadOnlyOrig );
    }
    return result;
  }

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org.hibernate.event.def.DefaultInitializeCollectionEventListener

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