/*
* This is eMonocot, a global online biodiversity information resource.
*
* Copyright © 2011–2015 The Board of Trustees of the Royal Botanic Gardens, Kew and The University of Oxford
*
* eMonocot is free software: you can redistribute it and/or modify it under the terms of the
* GNU Affero General Public License as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* eMonocot 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 Affero General Public License for more details.
*
* The complete text of the GNU Affero General Public License is in the source repository as the file
* ‘COPYING’. It is also available from <http://www.gnu.org/licenses/>.
*/
package org.emonocot.model.marshall.json.hibernate;
import java.util.*;
import org.emonocot.model.marshall.json.hibernate.HibernateModule.Feature;
import org.hibernate.collection.PersistentCollection;
import org.hibernate.collection.PersistentMap;
import org.hibernate.proxy.HibernateProxy;
import com.fasterxml.jackson.databind.BeanDescription;
import com.fasterxml.jackson.databind.BeanProperty;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializationConfig;
import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
import com.fasterxml.jackson.databind.type.CollectionType;
import com.fasterxml.jackson.databind.type.MapType;
import com.fasterxml.jackson.databind.type.TypeFactory;
import com.fasterxml.jackson.databind.ser.*;
public class HibernateSerializers extends Serializers.Base
{
protected final int _moduleFeatures;
public HibernateSerializers(int features)
{
_moduleFeatures = features;
}
@Override
public JsonSerializer<?> findSerializer(
SerializationConfig config, JavaType type,
BeanDescription beanDesc)
{
Class<?> raw = type.getRawClass();
/* Note: PersistentCollection does not implement Collection, so we
* may get some types here...
*/
if (PersistentCollection.class.isAssignableFrom(raw)) {
// TODO: handle iterator types? Or PersistentArrayHolder?
}
if (HibernateProxy.class.isAssignableFrom(raw)) {
return new HibernateProxySerializer(isEnabled(Feature.FORCE_LAZY_LOADING));
}
return null;
}
// @Override
// public JsonSerializer<?> findCollectionSerializer(SerializationConfig config,
// CollectionType type, BeanDescription beanDesc,
// TypeSerializer elementTypeSerializer, JsonSerializer<Object> elementValueSerializer)
// {
// Class<?> raw = type.getRawClass();
// // only handle PersistentCollection style collections...
// if (PersistentCollection.class.isAssignableFrom(raw)) {
// /* And for those, figure out "fallback type"; we MUST have some idea of
// * type to deserialize, aside from nominal PersistentXxx type.
// */
// return new PersistentCollectionSerializer(property, _figureFallbackType(config, type),
// isEnabled(Feature.FORCE_LAZY_LOADING));
// }
// return null;
// }
//
// @Override
// public JsonSerializer<?> findMapSerializer(SerializationConfig config,
// MapType type, BeanDescription beanDesc,
// JsonSerializer<Object> keySerializer,
// TypeSerializer elementTypeSerializer, JsonSerializer<Object> elementValueSerializer)
// {
// Class<?> raw = type.getRawClass();
// if (PersistentMap.class.isAssignableFrom(raw)) {
// return new PersistentCollectionSerializer(property, _figureFallbackType(config, type),
// isEnabled(Feature.FORCE_LAZY_LOADING));
// }
// return null;
// }
public final boolean isEnabled(HibernateModule.Feature f) {
return (_moduleFeatures & f.getMask()) != 0;
}
protected JavaType _figureFallbackType(SerializationConfig config,
JavaType persistentType)
{
// Alas, PersistentTypes are NOT generics-aware... meaning can't specify parameterization
Class<?> raw = persistentType.getRawClass();
TypeFactory tf = config.getTypeFactory();
if (Map.class.isAssignableFrom(raw)) {
return tf.constructMapType(Map.class, Object.class, Object.class);
}
if (List.class.isAssignableFrom(raw)) {
return tf.constructCollectionType(List.class, Object.class);
}
if (Set.class.isAssignableFrom(raw)) {
return tf.constructCollectionType(Set.class, Object.class);
}
// ok, just Collection of some kind
return tf.constructCollectionType(Collection.class, Object.class);
}
}