org.hibernate.mapping.SingleTableSubclass 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.mapping;
import java.util.Iterator;
import org.hibernate.MappingException;
import org.hibernate.engine.spi.Mapping;
import org.hibernate.internal.util.collections.JoinedIterator;
/**
* @author Gavin King
*/
public class SingleTableSubclass extends Subclass {
public SingleTableSubclass(PersistentClass superclass) {
super(superclass);
}
protected Iterator getNonDuplicatedPropertyIterator() {
return new JoinedIterator(
getSuperclass().getUnjoinedPropertyIterator(),
getUnjoinedPropertyIterator()
);
}
protected Iterator getDiscriminatorColumnIterator() {
if ( isDiscriminatorInsertable() && !getDiscriminator().hasFormula() ) {
return getDiscriminator().getColumnIterator();
}
else {
return super.getDiscriminatorColumnIterator();
}
}
public Object accept(PersistentClassVisitor mv) {
return mv.accept(this);
}
public void validate(Mapping mapping) throws MappingException {
if(getDiscriminator()==null) {
throw new MappingException("No discriminator found for " + getEntityName() + ". Discriminator is needed when 'single-table-per-hierarchy' is used and a class has subclasses");
}
super.validate(mapping);
}
}