/*
* 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.tuple.entity;
import java.util.Map;
import org.hibernate.EntityMode;
import org.hibernate.HibernateException;
import org.hibernate.EntityNameResolver;
import org.hibernate.engine.SessionFactoryImplementor;
import org.hibernate.tuple.Instantiator;
import org.hibernate.tuple.DynamicMapInstantiator;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.mapping.Property;
import org.hibernate.property.Getter;
import org.hibernate.property.PropertyAccessor;
import org.hibernate.property.PropertyAccessorFactory;
import org.hibernate.property.Setter;
import org.hibernate.proxy.map.MapProxyFactory;
import org.hibernate.proxy.ProxyFactory;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* An {@link EntityTuplizer} specific to the dynamic-map entity mode.
*
* @author Steve Ebersole
* @author Gavin King
*/
public class DynamicMapEntityTuplizer extends AbstractEntityTuplizer {
static final Log log = LogFactory.getLog( DynamicMapEntityTuplizer.class );
DynamicMapEntityTuplizer(EntityMetamodel entityMetamodel, PersistentClass mappedEntity) {
super(entityMetamodel, mappedEntity);
}
public EntityMode getEntityMode() {
return EntityMode.MAP;
}
private PropertyAccessor buildPropertyAccessor(Property mappedProperty) {
if ( mappedProperty.isBackRef() ) {
return mappedProperty.getPropertyAccessor(null);
}
else {
return PropertyAccessorFactory.getDynamicMapPropertyAccessor();
}
}
protected Getter buildPropertyGetter(Property mappedProperty, PersistentClass mappedEntity) {
return buildPropertyAccessor(mappedProperty).getGetter( null, mappedProperty.getName() );
}
protected Setter buildPropertySetter(Property mappedProperty, PersistentClass mappedEntity) {
return buildPropertyAccessor(mappedProperty).getSetter( null, mappedProperty.getName() );
}
protected Instantiator buildInstantiator(PersistentClass mappingInfo) {
return new DynamicMapInstantiator( mappingInfo );
}
protected ProxyFactory buildProxyFactory(PersistentClass mappingInfo, Getter idGetter, Setter idSetter) {
ProxyFactory pf = new MapProxyFactory();
try {
//TODO: design new lifecycle for ProxyFactory
pf.postInstantiate(
getEntityName(),
null,
null,
null,
null,
null
);
}
catch ( HibernateException he ) {
log.warn( "could not create proxy factory for:" + getEntityName(), he );
pf = null;
}
return pf;
}
public Class getMappedClass() {
return Map.class;
}
public Class getConcreteProxyClass() {
return Map.class;
}
public boolean isInstrumented() {
return false;
}
public EntityNameResolver[] getEntityNameResolvers() {
return new EntityNameResolver[] { BasicEntityNameResolver.INSTANCE };
}
public String determineConcreteSubclassEntityName(Object entityInstance, SessionFactoryImplementor factory) {
// TODO : do we need an explicit isInstance check here, or is that asserted prior to here?
return extractEmbeddedEntityName( ( Map ) entityInstance );
}
public static String extractEmbeddedEntityName(Map entity) {
return ( String ) entity.get( DynamicMapInstantiator.KEY );
}
public static class BasicEntityNameResolver implements EntityNameResolver {
public static final BasicEntityNameResolver INSTANCE = new BasicEntityNameResolver();
public String resolveEntityName(Object entity) {
final String entityName = extractEmbeddedEntityName( ( Map ) entity );
if ( entityName == null ) {
throw new HibernateException( "Could not determine type of dynamic map entity" );
}
return entityName;
}
public boolean equals(Object obj) {
return getClass().equals( obj.getClass() );
}
public int hashCode() {
return getClass().hashCode();
}
}
}
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