alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Hibernate example source code file (UserCollectionType.java)

This example Hibernate source code file (UserCollectionType.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, collectionpersister, hibernateexception, hibernateexception, iterator, map, object, object, persistentcollection, persistentcollection, sessionimplementor, usercollectiontype, util

The Hibernate UserCollectionType.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Middleware LLC.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 *
 */
package org.hibernate.usertype;
import java.util.Iterator;
import java.util.Map;
import org.hibernate.HibernateException;
import org.hibernate.collection.spi.PersistentCollection;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.persister.collection.CollectionPersister;

/**
 * A custom type for mapping user-written classes that implement <tt>PersistentCollection
 * 
 * @see org.hibernate.collection.spi.PersistentCollection
 * @author Gavin King
 */
public interface UserCollectionType {
	
	/**
	 * Instantiate an uninitialized instance of the collection wrapper
	 */
	public PersistentCollection instantiate(SessionImplementor session, CollectionPersister persister) 
	throws HibernateException;
	
	/**
	 * Wrap an instance of a collection
	 */
	public PersistentCollection wrap(SessionImplementor session, Object collection);
	
	/**
	 * Return an iterator over the elements of this collection - the passed collection
	 * instance may or may not be a wrapper
	 */
	public Iterator getElementsIterator(Object collection);

	/**
	 * Optional operation. Does the collection contain the entity instance?
	 */
	public boolean contains(Object collection, Object entity);
	/**
	 * Optional operation. Return the index of the entity in the collection.
	 */
	public Object indexOf(Object collection, Object entity);
	
	/**
	 * Replace the elements of a collection with the elements of another collection
	 */
	public Object replaceElements(
			Object original, 
			Object target, 
			CollectionPersister persister, 
			Object owner, 
			Map copyCache, 
			SessionImplementor session)
			throws HibernateException;

	/**
	 * Instantiate an empty instance of the "underlying" collection (not a wrapper),
	 * but with the given anticipated size (i.e. accounting for initial size
	 * and perhaps load factor).
	 *
	 * @param anticipatedSize The anticipated size of the instaniated collection
	 * after we are done populating it.  Note, may be negative to indicate that
	 * we not yet know anything about the anticipated size (i.e., when initializing
	 * from a result set row by row).
	 */
	public Object instantiate(int anticipatedSize);
	
}

Other Hibernate examples (source code examples)

Here is a short list of links related to this Hibernate UserCollectionType.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.