/*
* Copyright 2011 VZ Netzwerke Ltd
* Copyright 2014 devbliss GmbH
*
* 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 org.mongojack.internal.util;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.deser.BeanDeserializer;
import com.fasterxml.jackson.databind.deser.SettableBeanProperty;
import com.fasterxml.jackson.databind.ser.BeanPropertyWriter;
import com.fasterxml.jackson.databind.ser.std.BeanSerializerBase;
/**
* Creates an ID handler
*
* @author James Roper
* @since 1.0
*/
public class IdHandlerFactory {
public static <K> IdHandler<K, ?> getIdHandlerForProperty(
ObjectMapper objectMapper, JavaType type)
throws JsonMappingException {
JsonDeserializer deserializer = JacksonAccessor.findDeserializer(
objectMapper, type);
JsonDeserializer idDeserializer = null;
JsonSerializer idSerializer = null;
if (deserializer instanceof BeanDeserializer) {
SettableBeanProperty property = ((BeanDeserializer) deserializer)
.findProperty("_id");
if (property != null) {
idDeserializer = property.getValueDeserializer();
}
}
JsonSerializer serializer = JacksonAccessor.findValueSerializer(
JacksonAccessor.getSerializerProvider(objectMapper), type);
if (serializer instanceof BeanSerializerBase) {
BeanPropertyWriter writer = JacksonAccessor.findPropertyWriter(
(BeanSerializerBase) serializer, "_id");
if (writer != null) {
idSerializer = writer.getSerializer();
}
}
if (idDeserializer != null && idSerializer != null) {
return new IdHandler.JacksonIdHandler(idSerializer, idDeserializer,
objectMapper);
} else {
return new IdHandler.NoopIdHandler<K>();
}
}
}