/*
* Copyright (C) 2011 Benoit GUEROUT <bguerout at gmail dot com> and Yves AMSELLEM <amsellem dot yves at gmail dot com>
*
* 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.jongo.marshall.jackson.bson4jackson;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.module.SimpleDeserializers;
import com.mongodb.DBObject;
import com.mongodb.util.JSON;
import org.bson.types.Binary;
import org.bson.types.MaxKey;
import org.bson.types.MinKey;
import java.io.IOException;
import java.util.Date;
class BsonDeserializers extends SimpleDeserializers {
public BsonDeserializers() {
addDeserializer(Date.class, new DateDeserializer());
addDeserializer(MinKey.class, new MinKeyDeserializer());
addDeserializer(MaxKey.class, new MaxKeyDeserializer());
addDeserializer(Binary.class, new BinaryDeserializer());
addDeserializer(DBObject.class, new NativeDeserializer());
}
private static class DateDeserializer extends JsonDeserializer<Date> {
@Override
public Date deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
Object deserialized = jp.getEmbeddedObject();
if (deserialized instanceof Long) {
return getDateFromBackwardFormat((Long) deserialized);
}
return (Date) deserialized;
}
private Date getDateFromBackwardFormat(Long deserialized) {
return new Date(deserialized);
}
}
private static class MinKeyDeserializer extends JsonDeserializer<MinKey> {
@Override
public MinKey deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
return new MinKey();
}
}
private static class MaxKeyDeserializer extends JsonDeserializer<MaxKey> {
@Override
public MaxKey deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
return new MaxKey();
}
}
private static class NativeDeserializer<T> extends JsonDeserializer<T> {
@Override
public T deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
String asString = jp.readValueAsTree().toString();
return (T) JSON.parse(asString);
}
}
private static class BinaryDeserializer extends JsonDeserializer<Binary> {
@Override
public Binary deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
Object object = jp.getEmbeddedObject();
return new Binary((byte[]) object);
}
}
}