[hibernate-issues] [Hibernate-JIRA] Created: (HHH-2756) PostLoadEventListener is triggered on not fully loaded entity

[Roman Pichlík (JIRA)]

PostLoadEventListener is triggered on not fully loaded entity
-------------------------------------------------------------

                 Key: HHH-2756
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2756
             Project: Hibernate3
          Issue Type: Bug
          Components: core
    Affects Versions: 3.2.4.sp1
            Reporter: Roman Pichlík
            Priority: Minor


PostLoadEventListener is triggered, but entity is not fully loaded especially is not possible to operate on mapped collection because org.hibernate.LazyInitializationException: illegal access to loading collection is thrown. PostLoadEventListener should be triggered when is entity fully loaded.

Let say, we have Parent, Child entity and PostLoadEventListener which iterates over child collection.

public class Parent {
  private Set<Child> children;
}

public class PostLoadEventListener implements PostLoadEventListener {
        public void onPostLoad(PostLoadEvent event) {
             Parent parent = (Parent) event.getEntity();
             for(Child child: parent.getChildren()){ // org.hibernate.LazyInitializationException: illegal access to loading collection
                 System.out.println(child);
             }
        }
}


Fix tip: see org.hibernate.loader.Loader#initializeEntitiesAndCollections, if i understood well the key are following statements.

		if ( hydratedObjects!=null ) {
			int hydratedObjectsSize = hydratedObjects.size();
			if ( log.isTraceEnabled() ) {
				log.trace( "total objects hydrated: " + hydratedObjectsSize );
			}
			for ( int i = 0; i < hydratedObjectsSize; i++ ) {
				TwoPhaseLoad.initializeEntity( hydratedObjects.get(i), readOnly, session, pre, post );    //event is trigerred here
			}
		}
		
                //but collection are loaded by this code 
		if ( collectionPersisters != null ) {
			for ( int i=0; i<collectionPersisters.length; i++ ) {
				if ( !collectionPersisters[i].isArray() ) {					
					endCollectionLoad( resultSetId, session, collectionPersisters[i] );
				}
			}
		}

               //post event handlers should be trigerred here




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