org.hibernate.id.Assigned Maven / Gradle / Ivy
/*
* 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.id;
import java.io.Serializable;
import java.util.Properties;
import org.hibernate.HibernateException;
import org.hibernate.MappingException;
import org.hibernate.dialect.Dialect;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.type.Type;
/**
* assigned
*
* An IdentifierGenerator that returns the current identifier assigned
* to an instance.
*
* @author Gavin King
*/
public class Assigned implements IdentifierGenerator, Configurable {
private String entityName;
public Serializable generate(SessionImplementor session, Object obj) throws HibernateException {
//TODO: cache the persister, this shows up in yourkit
final Serializable id = session.getEntityPersister( entityName, obj ).getIdentifier( obj, session );
if ( id == null ) {
throw new IdentifierGenerationException(
"ids for this class must be manually assigned before calling save(): " + entityName
);
}
return id;
}
public void configure(Type type, Properties params, Dialect d) throws MappingException {
entityName = params.getProperty(ENTITY_NAME);
if ( entityName == null ) {
throw new MappingException("no entity name");
}
}
}