com.sourceclear.headlines.serialization.ImmutableMapDeserializer.java Source code

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Here is the source code for com.sourceclear.headlines.serialization.ImmutableMapDeserializer.java

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/*
  Copyright (c) 2013  SourceClear Inc.
      
  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 com.sourceclear.headlines.serialization;

import com.google.common.collect.ImmutableMap;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Map;
import sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl;

/**
 * Customized JsonDeserializer which allows for deserializing Guava's ImmutableMap
 * into objects via GSON.
 */
public class ImmutableMapDeserializer implements JsonDeserializer<ImmutableMap<?, ?>> {

    ///////////////////////////// Class Attributes \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

    ////////////////////////////// Class Methods \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

    //////////////////////////////// Attributes \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

    /////////////////////////////// Constructors \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\  

    ////////////////////////////////// Methods \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

    //------------------------ Implements: JsonDeserializer

    public ImmutableMap<?, ?> deserialize(JsonElement json, Type type, JsonDeserializationContext context)
            throws JsonParseException {
        final Type type2 = ParameterizedTypeImpl.make(Map.class,
                ((ParameterizedType) type).getActualTypeArguments(), null);
        final Map<?, ?> map = context.deserialize(json, type2);

        return ImmutableMap.copyOf(map);
    }

    //------------------------ Overrides:

    //---------------------------- Abstract Methods -----------------------------

    //---------------------------- Utility Methods ------------------------------

    //---------------------------- Property Methods -----------------------------     

}