HttpSessionImpl.java

/*
 * Copyright 2013 by Maxim Kalina
 *
 *    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 net.javaforge.netty.servlet.bridge.impl;

import net.javaforge.netty.servlet.bridge.util.Utils;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionBindingListener;
import javax.servlet.http.HttpSessionContext;
import java.util.Enumeration;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

@SuppressWarnings({"deprecation", "unchecked"})
public class HttpSessionImpl implements HttpSession {

    public static final String SESSION_ID_KEY = "JSESSIONID";

    private String id;

    private long creationTime;

    private long lastAccessedTime;

    private int maxInactiveInterval = -1;

    private Map<String, Object> attributes;

    public HttpSessionImpl(String id) {
        this.id = id;
        this.creationTime = System.currentTimeMillis();
        this.lastAccessedTime = this.creationTime;
    }

    @Override
    public Object getAttribute(String name) {
        return attributes != null ? attributes.get(name) : null;
    }

    @Override
    public Enumeration getAttributeNames() {
        return Utils.enumerationFromKeys(attributes);
    }

    @Override
    public long getCreationTime() {
        return this.creationTime;
    }

    @Override
    public String getId() {
        return this.id;
    }

    @Override
    public long getLastAccessedTime() {
        return this.lastAccessedTime;
    }

    @Override
    public ServletContext getServletContext() {
        return ServletContextImpl.get();
    }

    @Override
    public HttpSessionContext getSessionContext() {
        throw new IllegalStateException(
                "As of Version 2.1, this method is deprecated and has no replacement.");
    }

    @Override
    public Object getValue(String name) {
        return getAttribute(name);
    }

    @Override
    public String[] getValueNames() {
        if (attributes == null)
            return null;

        return attributes.keySet().toArray(
                new String[attributes.keySet().size()]);
    }

    @Override
    public void invalidate() {
        if (attributes != null) {
            attributes.clear();
        }
    }

    @Override
    public void putValue(String name, Object value) {
        this.setAttribute(name, value);
    }

    @Override
    public void removeAttribute(String name) {
        if (attributes != null) {
            Object value = attributes.get(name);
            if (value != null && value instanceof HttpSessionBindingListener) {
                ((HttpSessionBindingListener) value)
                        .valueUnbound(new HttpSessionBindingEvent(this, name,
                                value));
            }
            attributes.remove(name);
        }
    }

    @Override
    public void removeValue(String name) {
        this.removeAttribute(name);
    }

    @Override
    public void setAttribute(String name, Object value) {
        if (attributes == null)
            attributes = new ConcurrentHashMap<String, Object>();

        attributes.put(name, value);

        if (value != null && value instanceof HttpSessionBindingListener) {
            ((HttpSessionBindingListener) value)
                    .valueBound(new HttpSessionBindingEvent(this, name, value));
        }

    }

    @Override
    public int getMaxInactiveInterval() {
        return this.maxInactiveInterval;
    }

    @Override
    public void setMaxInactiveInterval(int interval) {
        this.maxInactiveInterval = interval;

    }

    public void touch() {
        this.lastAccessedTime = System.currentTimeMillis();
    }

    @Override
    public boolean isNew() {
        throw new IllegalStateException("Method 'isNew' not yet implemented!");
    }

}