/**
* 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.JSCollections;
import org.stjs.javascript.Map;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonNull;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
public class JSMapAdapter implements JsonSerializer<Map<?, ?>>, JsonDeserializer<Map<?, ?>> {
@Override
public Map<?, ?> deserialize(JsonElement elem, Type type, JsonDeserializationContext ctx) throws JsonParseException {
if (elem == null) {
return null;
}
JsonObject js = elem.getAsJsonObject();
Type valueType = (type instanceof ParameterizedType) ? ((ParameterizedType) type).getActualTypeArguments()[1] : Object.class;
Map<String, Object> map = JSCollections.$map();
for (java.util.Map.Entry<String, JsonElement> entry : js.entrySet()) {
map.$put(entry.getKey(), ctx.deserialize(entry.getValue(), valueType));
}
return map;
}
@SuppressWarnings("unchecked")
@Override
public JsonElement serialize(Map<?, ?> map, Type typeOfSrc, JsonSerializationContext ctx) {
if (map == null) {
return new JsonNull();
}
JsonObject js = new JsonObject();
for (Object k : map) {
js.add(k.toString(), ctx.serialize(((Map) map).$get(k.toString())));
}
return js;
}
}