/*
* Copyright 2010 Martin Grotzke
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package de.javakaffee.web.msm.serializer.kryo;
import org.hibernate.collection.AbstractPersistentCollection;
import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.Serializer;
import com.esotericsoftware.kryo.serialize.FieldSerializer;
/**
* {@link SerializerFactory} that supports hibernate persistent collections (Hibernate 3 and Nibernate 4).
* <p/>
* It creates a {@link FieldSerializer} for subclasses of {@link AbstractPersistentCollection}.
* <p/>
* If Hibernate is not in the classpath, this {@link SerializerFactory} is no-op.
*
* @author <a href="mailto:martin.grotzke@javakaffee.de">Martin Grotzke</a>
*/
public class HibernateCollectionsSerializerFactory implements SerializerFactory {
private static Class<?> HIBERNATE_ABSTRACT_COLLECTION_CLASS;
static {
try {
HIBERNATE_ABSTRACT_COLLECTION_CLASS = Class.forName("org.hibernate.collection.AbstractPersistentCollection");
} catch (ClassNotFoundException e) {
try {
HIBERNATE_ABSTRACT_COLLECTION_CLASS = Class.forName("org.hibernate.collection.internal.AbstractPersistentCollection");
} catch (ClassNotFoundException e2) {
HIBERNATE_ABSTRACT_COLLECTION_CLASS = null;
}
}
}
private final Kryo _kryo;
public HibernateCollectionsSerializerFactory( final Kryo kryo ) {
_kryo = kryo;
}
@Override
public Serializer newSerializer( final Class<?> type ) {
if( HIBERNATE_ABSTRACT_COLLECTION_CLASS == null ) {
return null;
} else if ( HIBERNATE_ABSTRACT_COLLECTION_CLASS.isAssignableFrom( type ) ) {
return new FieldSerializer( _kryo, type );
}
return null;
}
}