IsUsernameAvailableServlet.java

/**
 * IsUsernameAvailableServlet.java
 * Author: Francesco Rosso (rosso@eurix.it)
 * 
 * This file is part of PrestoPRIME Preservation Platform (P4).
 * 
 * Copyright (C) 2009-2012 EURIX Srl, Torino, Italy
 *  
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package eu.prestoprime.p4gui.services.login;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import eu.prestoprime.p4gui.util.DataBaseManager;

@WebServlet("/available")
public class IsUsernameAvailableServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		String username = request.getParameter("username");
		if (username != null) {
			try {
				if (!DataBaseManager.getInstance().isUsernameAvailable(username)) {
					response.getWriter().write("<span class=\"error\">Username not available</span>");
				} else {
					response.getWriter().write("<span class=\"success\">Username available</span>");
				}
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}
}