/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2011, 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.persister.internal;
import org.hibernate.mapping.Collection;
import org.hibernate.mapping.JoinedSubclass;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.mapping.RootClass;
import org.hibernate.mapping.UnionSubclass;
import org.hibernate.metamodel.binding.EntityBinding;
import org.hibernate.metamodel.binding.PluralAttributeBinding;
import org.hibernate.persister.collection.BasicCollectionPersister;
import org.hibernate.persister.collection.CollectionPersister;
import org.hibernate.persister.collection.OneToManyPersister;
import org.hibernate.persister.entity.EntityPersister;
import org.hibernate.persister.entity.JoinedSubclassEntityPersister;
import org.hibernate.persister.entity.SingleTableEntityPersister;
import org.hibernate.persister.entity.UnionSubclassEntityPersister;
import org.hibernate.persister.spi.PersisterClassResolver;
import org.hibernate.persister.spi.UnknownPersisterException;
/**
* @author Steve Ebersole
*/
public class StandardPersisterClassResolver implements PersisterClassResolver {
public Class<? extends EntityPersister> getEntityPersisterClass(EntityBinding metadata) {
// todo : make sure this is based on an attribute kept on the metamodel in the new code, not the concrete PersistentClass impl found!
if ( metadata.isRoot() ) {
return singleTableEntityPersister(); // EARLY RETURN!
}
switch ( metadata.getInheritanceType() ) {
case JOINED: {
return joinedSubclassEntityPersister();
}
case SINGLE_TABLE: {
return singleTableEntityPersister();
}
case TABLE_PER_CLASS: {
return unionSubclassEntityPersister();
}
default: {
throw new UnknownPersisterException(
"Could not determine persister implementation for entity [" + metadata.getEntity().getName() + "]"
);
}
}
}
@Override
public Class<? extends EntityPersister> getEntityPersisterClass(PersistentClass metadata) {
// todo : make sure this is based on an attribute kept on the metamodel in the new code, not the concrete PersistentClass impl found!
if ( RootClass.class.isInstance( metadata ) ) {
return singleTableEntityPersister();
}
else if ( JoinedSubclass.class.isInstance( metadata ) ) {
return joinedSubclassEntityPersister();
}
else if ( UnionSubclass.class.isInstance( metadata ) ) {
return unionSubclassEntityPersister();
}
else {
throw new UnknownPersisterException(
"Could not determine persister implementation for entity [" + metadata.getEntityName() + "]"
);
}
}
public Class<? extends EntityPersister> singleTableEntityPersister() {
return SingleTableEntityPersister.class;
}
public Class<? extends EntityPersister> joinedSubclassEntityPersister() {
return JoinedSubclassEntityPersister.class;
}
public Class<? extends EntityPersister> unionSubclassEntityPersister() {
return UnionSubclassEntityPersister.class;
}
@Override
public Class<? extends CollectionPersister> getCollectionPersisterClass(Collection metadata) {
return metadata.isOneToMany() ? oneToManyPersister() : basicCollectionPersister();
}
@Override
public Class<? extends CollectionPersister> getCollectionPersisterClass(PluralAttributeBinding metadata) {
return metadata.getCollectionElement().isOneToMany() ? oneToManyPersister() : basicCollectionPersister();
}
private Class<OneToManyPersister> oneToManyPersister() {
return OneToManyPersister.class;
}
private Class<BasicCollectionPersister> basicCollectionPersister() {
return BasicCollectionPersister.class;
}
}