com.javacreed.examples.gson.part2.BookDeserializer.java Source code

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Here is the source code for com.javacreed.examples.gson.part2.BookDeserializer.java

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/**
 * Copyright 2012-2014 Java Creed.
 * 
 * Licensed under the Apache License, Version 2.0 (the "<em>License</em>");
 * 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.javacreed.examples.gson.part2;

import java.lang.reflect.Type;

import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;

public class BookDeserializer implements JsonDeserializer<Book> {

    @Override
    public Book deserialize(final JsonElement json, final Type typeOfT, final JsonDeserializationContext context)
            throws JsonParseException {
        final JsonObject jsonObject = json.getAsJsonObject();

        // Delegate the deserialisation to the AuthorDeserializer class
        final Author[] authors = context.deserialize(jsonObject.get("authors"), Author[].class);

        final Book book = new Book();
        book.setTitle(jsonObject.get("title").getAsString());
        book.setIsbn(jsonObject.get("isbn").getAsString());
        book.setAuthors(authors);
        return book;
    }
}