org.hibernate.metamodel.binding.EntityIdentifier Maven / Gradle / Ivy
/*
* 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.metamodel.binding;
import java.util.Properties;
import org.hibernate.AssertionFailure;
import org.hibernate.id.IdentifierGenerator;
import org.hibernate.id.factory.IdentifierGeneratorFactory;
/**
* Binds the entity identifier.
*
* @author Steve Ebersole
* @author Hardy Ferentschik
*/
public class EntityIdentifier {
private final EntityBinding entityBinding;
private BasicAttributeBinding attributeBinding;
private IdentifierGenerator identifierGenerator;
private IdGenerator idGenerator;
private boolean isIdentifierMapper = false;
// todo : mappers, etc
/**
* Create an identifier
*
* @param entityBinding the entity binding for which this instance is the id
*/
public EntityIdentifier(EntityBinding entityBinding) {
this.entityBinding = entityBinding;
}
public BasicAttributeBinding getValueBinding() {
return attributeBinding;
}
public void setValueBinding(BasicAttributeBinding attributeBinding) {
if ( this.attributeBinding != null ) {
throw new AssertionFailure(
String.format(
"Identifier value binding already existed for %s",
entityBinding.getEntity().getName()
)
);
}
this.attributeBinding = attributeBinding;
}
public void setIdGenerator(IdGenerator idGenerator) {
this.idGenerator = idGenerator;
}
public boolean isEmbedded() {
return attributeBinding.getSimpleValueSpan() > 1;
}
public boolean isIdentifierMapper() {
return isIdentifierMapper;
}
// todo do we really need this createIdentifierGenerator and how do we make sure the getter is not called too early
// maybe some sort of visitor pattern here!? (HF)
public IdentifierGenerator createIdentifierGenerator(IdentifierGeneratorFactory factory, Properties properties) {
if ( idGenerator != null ) {
identifierGenerator = attributeBinding.createIdentifierGenerator( idGenerator, factory, properties );
}
return identifierGenerator;
}
public IdentifierGenerator getIdentifierGenerator() {
return identifierGenerator;
}
}