package org.hibernate.tuple.entity;
import org.hibernate.tuple.EntityModeToTuplizerMapping;
import org.hibernate.tuple.Tuplizer;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.EntityMode;
import org.hibernate.HibernateException;
import org.hibernate.util.ReflectHelper;
import java.util.Iterator;
import java.util.Map;
import java.util.HashMap;
import java.io.Serializable;
/**
* Handles mapping {@link EntityMode}s to {@link EntityTuplizer}s.
* <p/>
* Most of the handling is really in the super class; here we just create
* the tuplizers and add them to the superclass
*
* @author Steve Ebersole
*/
public class EntityEntityModeToTuplizerMapping extends EntityModeToTuplizerMapping implements Serializable {
private static final Class[] ENTITY_TUP_CTOR_SIG = new Class[] { EntityMetamodel.class, PersistentClass.class };
/**
* Instantiates a EntityEntityModeToTuplizerMapping based on the given
* entity mapping and metamodel definitions.
*
* @param mappedEntity The entity mapping definition.
* @param em The entity metamodel definition.
*/
public EntityEntityModeToTuplizerMapping(PersistentClass mappedEntity, EntityMetamodel em) {
// create our own copy of the user-supplied tuplizer impl map
Map userSuppliedTuplizerImpls = new HashMap();
if ( mappedEntity.getTuplizerMap() != null ) {
userSuppliedTuplizerImpls.putAll( mappedEntity.getTuplizerMap() );
}
// Build the dynamic-map tuplizer...
Tuplizer dynamicMapTuplizer = null;
String tuplizerImpl = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.MAP );
if ( tuplizerImpl == null ) {
dynamicMapTuplizer = new DynamicMapEntityTuplizer( em, mappedEntity );
}
else {
dynamicMapTuplizer = buildEntityTuplizer( tuplizerImpl, mappedEntity, em );
}
// then the pojo tuplizer, using the dynamic-map tuplizer if no pojo representation is available
Tuplizer pojoTuplizer = null;
tuplizerImpl = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.POJO );
if ( mappedEntity.hasPojoRepresentation() ) {
if ( tuplizerImpl == null ) {
pojoTuplizer = new PojoEntityTuplizer( em, mappedEntity );
}
else {
pojoTuplizer = buildEntityTuplizer( tuplizerImpl, mappedEntity, em );
}
}
else {
pojoTuplizer = dynamicMapTuplizer;
}
// then dom4j tuplizer, if dom4j representation is available
Tuplizer dom4jTuplizer = null;
tuplizerImpl = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.DOM4J );
if ( mappedEntity.hasDom4jRepresentation() ) {
if ( tuplizerImpl == null ) {
dom4jTuplizer = new Dom4jEntityTuplizer( em, mappedEntity );
}
else {
dom4jTuplizer = buildEntityTuplizer( tuplizerImpl, mappedEntity, em );
}
}
else {
dom4jTuplizer = null;
}
// put the "standard" tuplizers into the tuplizer map first
if ( pojoTuplizer != null ) {
addTuplizer( EntityMode.POJO, pojoTuplizer );
}
if ( dynamicMapTuplizer != null ) {
addTuplizer( EntityMode.MAP, dynamicMapTuplizer );
}
if ( dom4jTuplizer != null ) {
addTuplizer( EntityMode.DOM4J, dom4jTuplizer );
}
// then handle any user-defined entity modes...
if ( !userSuppliedTuplizerImpls.isEmpty() ) {
Iterator itr = userSuppliedTuplizerImpls.entrySet().iterator();
while ( itr.hasNext() ) {
Map.Entry entry = ( Map.Entry ) itr.next();
EntityMode entityMode = ( EntityMode ) entry.getKey();
EntityTuplizer tuplizer = buildEntityTuplizer( ( String ) entry.getValue(), mappedEntity, em );
addTuplizer( entityMode, tuplizer );
}
}
}
private static EntityTuplizer buildEntityTuplizer(String className, PersistentClass pc, EntityMetamodel em) {
try {
Class implClass = ReflectHelper.classForName( className );
return ( EntityTuplizer ) implClass.getConstructor( ENTITY_TUP_CTOR_SIG ).newInstance( new Object[] { em, pc } );
}
catch( Throwable t ) {
throw new HibernateException( "Could not build tuplizer [" + className + "]", t );
}
}
}
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