/*
* 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 org.hibernate.mapping.PersistentClass;
import org.hibernate.mapping.Property;
import org.hibernate.proxy.ProxyFactory;
import org.hibernate.proxy.HibernateProxy;
import org.hibernate.proxy.dom4j.Dom4jProxyFactory;
import org.hibernate.property.PropertyAccessor;
import org.hibernate.property.PropertyAccessorFactory;
import org.hibernate.property.Getter;
import org.hibernate.property.Setter;
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.Dom4jInstantiator;
import org.hibernate.type.AbstractComponentType;
import org.dom4j.Element;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.HashMap;
/**
* An {@link EntityTuplizer} specific to the dom4j entity mode.
*
* @author Steve Ebersole
* @author Gavin King
*/
public class Dom4jEntityTuplizer extends AbstractEntityTuplizer {
static final Log log = LogFactory.getLog( Dom4jEntityTuplizer.class );
private Map inheritenceNodeNameMap = new HashMap();
Dom4jEntityTuplizer(EntityMetamodel entityMetamodel, PersistentClass mappedEntity) {
super( entityMetamodel, mappedEntity );
inheritenceNodeNameMap.put( mappedEntity.getNodeName(), mappedEntity.getEntityName() );
Iterator itr = mappedEntity.getSubclassClosureIterator();
while( itr.hasNext() ) {
final PersistentClass mapping = ( PersistentClass ) itr.next();
inheritenceNodeNameMap.put( mapping.getNodeName(), mapping.getEntityName() );
}
}
/**
* {@inheritDoc}
*/
public EntityMode getEntityMode() {
return EntityMode.DOM4J;
}
private PropertyAccessor buildPropertyAccessor(Property mappedProperty) {
if ( mappedProperty.isBackRef() ) {
return mappedProperty.getPropertyAccessor(null);
}
else {
return PropertyAccessorFactory.getDom4jPropertyAccessor(
mappedProperty.getNodeName(),
mappedProperty.getType(),
getEntityMetamodel().getSessionFactory()
);
}
}
/**
* {@inheritDoc}
*/
protected Getter buildPropertyGetter(Property mappedProperty, PersistentClass mappedEntity) {
return buildPropertyAccessor(mappedProperty).getGetter( null, mappedProperty.getName() );
}
/**
* {@inheritDoc}
*/
protected Setter buildPropertySetter(Property mappedProperty, PersistentClass mappedEntity) {
return buildPropertyAccessor(mappedProperty).getSetter( null, mappedProperty.getName() );
}
/**
* {@inheritDoc}
*/
protected Instantiator buildInstantiator(PersistentClass persistentClass) {
return new Dom4jInstantiator( persistentClass );
}
/**
* {@inheritDoc}
*/
public Serializable getIdentifier(Object entityOrId) throws HibernateException {
if (entityOrId instanceof Element) {
return super.getIdentifier(entityOrId);
}
else {
//it was not embedded, so the argument is just an id
return (Serializable) entityOrId;
}
}
/**
* {@inheritDoc}
*/
protected ProxyFactory buildProxyFactory(PersistentClass mappingInfo, Getter idGetter, Setter idSetter) {
HashSet proxyInterfaces = new HashSet();
proxyInterfaces.add( HibernateProxy.class );
proxyInterfaces.add( Element.class );
ProxyFactory pf = new Dom4jProxyFactory();
try {
pf.postInstantiate(
getEntityName(),
Element.class,
proxyInterfaces,
null,
null,
mappingInfo.hasEmbeddedIdentifier() ?
(AbstractComponentType) mappingInfo.getIdentifier().getType() :
null
);
}
catch ( HibernateException he ) {
log.warn( "could not create proxy factory for:" + getEntityName(), he );
pf = null;
}
return pf;
}
/**
* {@inheritDoc}
*/
public Class getMappedClass() {
return Element.class;
}
/**
* {@inheritDoc}
*/
public Class getConcreteProxyClass() {
return Element.class;
}
/**
* {@inheritDoc}
*/
public boolean isInstrumented() {
return false;
}
/**
* {@inheritDoc}
*/
public EntityNameResolver[] getEntityNameResolvers() {
return new EntityNameResolver[] { new BasicEntityNameResolver( getEntityName(), inheritenceNodeNameMap ) };
}
/**
* {@inheritDoc}
*/
public String determineConcreteSubclassEntityName(Object entityInstance, SessionFactoryImplementor factory) {
return ( String ) inheritenceNodeNameMap.get( extractNodeName( ( Element ) entityInstance ) );
}
public static String extractNodeName(Element element) {
return element.getName();
}
public static class BasicEntityNameResolver implements EntityNameResolver {
private final String rootEntityName;
private final Map nodeNameToEntityNameMap;
public BasicEntityNameResolver(String rootEntityName, Map nodeNameToEntityNameMap) {
this.rootEntityName = rootEntityName;
this.nodeNameToEntityNameMap = nodeNameToEntityNameMap;
}
/**
* {@inheritDoc}
*/
public String resolveEntityName(Object entity) {
return ( String ) nodeNameToEntityNameMap.get( extractNodeName( ( Element ) entity ) );
}
/**
* {@inheritDoc}
*/
public boolean equals(Object obj) {
return rootEntityName.equals( ( ( BasicEntityNameResolver ) obj ).rootEntityName );
}
/**
* {@inheritDoc}
*/
public int hashCode() {
return rootEntityName.hashCode();
}
}
}
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