Java tutorial
/* * DBSchools * Copyright (C) 2005 David C. Briccetti * www.davebsoft.com * * 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 2 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, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package com.dbschools.music; import java.io.Serializable; import java.util.concurrent.BlockingQueue; import java.util.concurrent.LinkedBlockingQueue; import org.apache.commons.lang.builder.ToStringBuilder; import com.dbschools.music.events.Event; import com.dbschools.music.orm.User; public class ClientSession implements Serializable, Comparable<ClientSession> { private static final long serialVersionUID = -4169836336490640853L; private final Integer sessionId; private final User user; private final String databaseName; private final BlockingQueue<Event> eventQueue = new LinkedBlockingQueue<Event>(); public ClientSession(User user, String databaseName) { this.user = user; this.databaseName = databaseName; sessionId = (int) (Math.random() * Integer.MAX_VALUE); } @Override public String toString() { return new ToStringBuilder(this).append("sessionId", sessionId).append("user", user).toString(); } public void enqueueEvent(Event event) { eventQueue.add(event); } public Event dequeueEvent() throws InterruptedException { return eventQueue.take(); } @Override public int compareTo(ClientSession o) { return sessionId.compareTo(o.sessionId); } public Integer getSessionId() { return sessionId; } public final User getUser() { return user; } public String getDatabaseName() { return databaseName; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((sessionId == null) ? 0 : sessionId.hashCode()); return result; } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; final ClientSession other = (ClientSession) obj; if (sessionId == null) { if (other.sessionId != null) return false; } else if (!sessionId.equals(other.sessionId)) return false; return true; } }