org.stjs.server.json.gson.JSArrayAdapter.java Source code

Introduction

Here is the source code for org.stjs.server.json.gson.JSArrayAdapter.java

Source

/**
 *  Copyright 2011 Alexandru Craciun, Eyal Kaspi
 *
 *  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.stjs.server.json.gson;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

import org.stjs.javascript.Array;
import org.stjs.javascript.JSCollections;

import com.google.gson.JsonArray;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonNull;
import com.google.gson.JsonParseException;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;

public class JSArrayAdapter implements JsonSerializer<Array<?>>, JsonDeserializer<Array<?>> {

    @Override
    public Array<?> deserialize(JsonElement elem, Type type, JsonDeserializationContext ctx)
            throws JsonParseException {
        if (elem == null) {
            return null;
        }
        JsonArray js = elem.getAsJsonArray();
        Type elementType = (type instanceof ParameterizedType)
                ? ((ParameterizedType) type).getActualTypeArguments()[0]
                : Object.class;
        Array<Object> array = JSCollections.$array();
        for (int i = 0; i < js.size(); ++i) {
            array.push(ctx.deserialize(js.get(i), elementType));
        }

        return array;
    }

    @Override
    public JsonElement serialize(Array<?> array, Type type, JsonSerializationContext ctx) {
        if (array == null) {
            return new JsonNull();
        }
        JsonArray js = new JsonArray();
        for (String i : array) {
            js.add(ctx.serialize(array.$get(i)));
        }
        return js;
    }

}