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Hibernate example source code file (AssociationType.java)

This example Hibernate source code file (AssociationType.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

associationtype, foreignkeydirection, foreignkeydirection, joinable, joinable, map, mappingexception, mappingexception, sessionfactoryimplementor, string, string, type, util

The Hibernate AssociationType.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2010, Red Hat Inc. 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 Inc.
 *
 * 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.type;

import java.util.Map;

import org.hibernate.MappingException;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.persister.entity.Joinable;

/**
 * A type that represents some kind of association between entities.
 * @see org.hibernate.engine.internal.Cascade
 * @author Gavin King
 */
public interface AssociationType extends Type {

	/**
	 * Get the foreign key directionality of this association
	 */
	public ForeignKeyDirection getForeignKeyDirection();

	//TODO: move these to a new JoinableType abstract class,
	//extended by EntityType and PersistentCollectionType:

	/**
	 * Is the primary key of the owning entity table
	 * to be used in the join?
	 */
	public boolean useLHSPrimaryKey();
	/**
	 * Get the name of a property in the owning entity 
	 * that provides the join key (null if the identifier)
	 */
	public String getLHSPropertyName();
	
	/**
	 * The name of a unique property of the associated entity 
	 * that provides the join key (null if the identifier of
	 * an entity, or key of a collection)
	 */
	public String getRHSUniqueKeyPropertyName();

	/**
	 * Get the "persister" for this association - a class or
	 * collection persister
	 */
	public Joinable getAssociatedJoinable(SessionFactoryImplementor factory) throws MappingException;
	
	/**
	 * Get the entity name of the associated entity
	 */
	public String getAssociatedEntityName(SessionFactoryImplementor factory) throws MappingException;
	
	/**
	 * Get the "filtering" SQL fragment that is applied in the 
	 * SQL on clause, in addition to the usual join condition
	 */	
	public String getOnCondition(String alias, SessionFactoryImplementor factory, Map enabledFilters) 
	throws MappingException;
	
	/**
	 * Do we dirty check this association, even when there are
	 * no columns to be updated?
	 */
	public abstract boolean isAlwaysDirtyChecked();
	
	public boolean isEmbeddedInXML();
}






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