com.slx.funstream.utils.ChatMessageDeserializer.java Source code

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Here is the source code for com.slx.funstream.utils.ChatMessageDeserializer.java

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/*
 *   Copyright (C) 2015 Alex Neeky
 *
 *   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.slx.funstream.utils;

import com.google.gson.JsonArray;
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;
import com.slx.funstream.model.ChatMessage;
import com.slx.funstream.rest.model.CurrentUser;

import java.lang.reflect.Type;

public class ChatMessageDeserializer implements JsonDeserializer<ChatMessage[]> {

    private static final String ID = "id";
    private static final String FROM = "from";
    private static final String TO = "to";
    private static final String CHANNEL = "channel";
    private static final String TEXT = "text";
    private static final String TIME = "time";

    @Override
    public ChatMessage[] deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
            throws JsonParseException {

        if (json.isJsonArray()) {
            JsonArray jsonMessages = json.getAsJsonArray();
            ChatMessage[] messages = new ChatMessage[jsonMessages.size()];

            for (int i = 0; i < jsonMessages.size(); i++) {
                JsonObject jsonMessage = jsonMessages.get(i).getAsJsonObject();
                ChatMessage chatMessage = new ChatMessage();
                chatMessage.setId(jsonMessage.get(ID).getAsLong());
                chatMessage.setChannel(jsonMessage.get(CHANNEL).getAsLong());
                chatMessage
                        .setFrom(context.deserialize(jsonMessage.get(FROM).getAsJsonObject(), CurrentUser.class));
                chatMessage.setTo(context.deserialize(jsonMessage.get(TO).getAsJsonObject(), CurrentUser.class));
                chatMessage.setText(jsonMessage.get(TEXT).getAsString());
                chatMessage.setTime(jsonMessage.get(TIME).getAsString());
                messages[i] = chatMessage;
            }
            return messages;
        }
        return null;

    }
}