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/*
 * 
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 2007-2008 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
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 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
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 * either the CDDL, the GPL Version 2 or to extend the choice of license to
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package com.sun.grizzly.http.servlet;

import com.sun.grizzly.tcp.http11.GrizzlySession;
import java.util.Enumeration;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionContext;

/**
 * Basic {@link HttpSession} based on {@link GrizzlySession} support.
 * 
 * @author Jeanfrancois Arcand
 */
public class HttpSessionImpl implements HttpSession {

    /**
     * The real session objecty
     */
    private GrizzlySession session;
    
    
    /**
     * The ServletContext.
     */
    private ServletContextImpl contextImpl;
    
    
    /**
     * When this session was created.
     */
    private Long creationTime;
    
    
    /**
     * Last time the session was accessed.
     */
    private Long lastAccessed;
    
    
    /**
     * Is this session new.
     */
    private boolean isNew = true;
    
    
    /**
     * Create an HttpSession.
     * @param contextImpl
     */
    public HttpSessionImpl(ServletContextImpl contextImpl){
        this.contextImpl = contextImpl;
        
        creationTime = System.currentTimeMillis();
        lastAccessed = creationTime;
    }
    
    
    /**
     * {@inheritDoc}
     */
    public long getCreationTime() {
        return creationTime;
    }
    
    
    /**
     * {@inheritDoc}
     */
    public String getId() {
        return session.getIdInternal();
    }

    /**
     * {@inheritDoc}
     */
    public long getLastAccessedTime() {
        return lastAccessed;
    }

    
    /**
     * Reset the timestamp.
     */
    protected void access(){
        lastAccessed = System.currentTimeMillis();  
        session.setTimestamp(lastAccessed);
        isNew = false;
    }
    
    
    /**
     * {@inheritDoc}
     */    
    public ServletContext getServletContext() {
        return contextImpl;
    }

    
    /**
     * {@inheritDoc}
     */
    public void setMaxInactiveInterval(int sessionTimeout) {
        session.setTimestamp(sessionTimeout);
    }
    
    
    /**
     * {@inheritDoc}
     */
    public int getMaxInactiveInterval() {
        return (int)session.getSessionTimeout();
    }
    
    
    /**
     * {@inheritDoc}
     */
    public HttpSessionContext getSessionContext() {
        return null;
    }
    
    
    /**
     * {@inheritDoc}
     */
    public Object getAttribute(String key) {
       return session.getAttribute(key);
    }

    
    /**
     * {@inheritDoc}
     */
    public Object getValue(String value) {
        return session.getAttribute(value);
    }

    
    /**
     * {@inheritDoc}
     */
    public Enumeration getAttributeNames() {
        return session.atttibutes().keys();
    }

    
    /**
     * {@inheritDoc}
     */
    public String[] getValueNames() {
       return session.atttibutes().entrySet().toArray(new String[0]);
    }

    
    /**
     * {@inheritDoc}
     */
    public void setAttribute(String key, Object value) {
        session.setAttribute(key, value);
    }

    
    /**
     * {@inheritDoc}
     */
    public void putValue(String key, Object value) {
        session.setAttribute(key, value);
    }

    
    /**
     * {@inheritDoc}
     */
    public void removeAttribute(String key) {
        session.removeAttribute(key);
    }

    
    /**
     * {@inheritDoc}
     */
    public void removeValue(String key) {
        session.removeAttribute(key);
    }
    
    /**
     * {@inheritDoc}
     */
    public void invalidate() {
        session.atttibutes().clear();
        creationTime = 0L;
        isNew = true;
        
    }

    /**
     * {@inheritDoc}
     */
    public boolean isNew() {
        return isNew;
    }

    
    /**
     * Set the {@link GrizzlySession}
     */
    protected void setSession(GrizzlySession session) {
        this.session = session;
    }

}