org.brutusin.rpc_chat.User Maven / Gradle / Ivy
/*
* Copyright 2016 Ignacio del Valle Alles [email protected].
*
* 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.brutusin.rpc_chat;
import java.util.concurrent.atomic.AtomicInteger;
import javax.servlet.http.HttpSession;
/**
*
* @author Ignacio del Valle Alles [email protected]
*/
public final class User {
private static final AtomicInteger counter = new AtomicInteger();
private final Integer id;
private User() {
this.id = counter.incrementAndGet();
}
public Integer getId() {
return id;
}
public static User from(HttpSession httpSession) {
synchronized (httpSession) {
User user = (User) httpSession.getAttribute(User.class.getName());
if (user == null) {
user = new User();
httpSession.setAttribute(User.class.getName(), user);
}
return user;
}
}
}