Hibernate example source code file (MyListType.java)

This example Hibernate source code file (MyListType.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Hibernate tags/keywords

collectionpersister, hibernateexception, hibernateexception, imylist, imylist, integer, iterator, map, mylisttype, object, object, persistentcollection, persistentcollection, persistentmylist, util

The Hibernate MyListType.java source code

package org.hibernate.test.usercollection.basic;
import java.util.Iterator;
import java.util.Map;
import org.hibernate.EntityMode;
import org.hibernate.HibernateException;
import org.hibernate.collection.spi.PersistentCollection;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.persister.collection.CollectionPersister;
import org.hibernate.usertype.UserCollectionType;

public class MyListType implements UserCollectionType {

	static int lastInstantiationRequest = -2;

	public PersistentCollection instantiate(SessionImplementor session, CollectionPersister persister) throws HibernateException {
		return new PersistentMyList(session);
	}

	public PersistentCollection wrap(SessionImplementor session, Object collection) {
		return new PersistentMyList( session, (IMyList) collection );
	}

	public Iterator getElementsIterator(Object collection) {
		return ( (IMyList) collection ).iterator();
	}

	public boolean contains(Object collection, Object entity) {
		return ( (IMyList) collection ).contains(entity);
	}

	public Object indexOf(Object collection, Object entity) {
		int l = ( (IMyList) collection ).indexOf(entity);
		if(l<0) {
			return null;
		} else {
			return new Integer(l);
		}
	}

	public Object replaceElements(Object original, Object target, CollectionPersister persister, Object owner, Map copyCache, SessionImplementor session) throws HibernateException {
		IMyList result = (IMyList) target;
		result.clear();
		result.addAll((MyList)original);
		return result;
	}

	public Object instantiate(int anticipatedSize) {
		lastInstantiationRequest = anticipatedSize;
		return new MyList();
	}

	
}