com.google.android.gcm.demo.server.AlertsServlet.java Source code

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Here is the source code for com.google.android.gcm.demo.server.AlertsServlet.java

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/*
 * Copyright 2012 Google 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.google.android.gcm.demo.server;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.json.simple.JSONArray;

/**
 * Servlet that adds display number of devices and button to send a message.
 * <p>
 * This servlet is used just by the browser (i.e., not device) and contains the
 * main page of the demo app.
 */
@SuppressWarnings("serial")
public class AlertsServlet extends BaseServlet {

    static final String ATTRIBUTE_STATUS = "status";

    /**
     * Displays the existing messages and offer the option to send a new one.
     */
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
        resp.setContentType("application/json");

        String limit = req.getParameter("limit");
        String offset = req.getParameter("offset");

        JSONArray alerts = Datastore.getAllAlerts(Integer.parseInt(offset), Integer.parseInt(limit));
        PrintWriter out = resp.getWriter();
        out.print(alerts);
        resp.setStatus(HttpServletResponse.SC_OK);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException {
        doGet(req, resp);
    }

}