LoginServiceImpl.java

/*
 * Copyright (c) 2010, 2011 Mashery, Inc. All Rights Reserved.
 * 
 * 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.mashery.examples.api.server;

import com.google.appengine.api.users.User;
import com.google.appengine.api.users.UserService;
import com.google.appengine.api.users.UserServiceFactory;
import com.google.gwt.user.server.rpc.RemoteServiceServlet;
import com.mashery.examples.api.client.LoginException;
import com.mashery.examples.api.client.LoginService;

@SuppressWarnings("serial")
public class LoginServiceImpl extends RemoteServiceServlet implements LoginService {

	@Override
	public String getUserEmail() throws LoginException {
		UserService svc = UserServiceFactory.getUserService();
		if (svc.isUserLoggedIn()) {
			User user = svc.getCurrentUser();
			return user.getEmail();
		}
		
		return null;
	}
}