SessionImpl.java

/*
 * Copyright 2008-2010 the T2 Project ant the Others.
 *
 * 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.t2framework.confeito.contexts.impl;

import java.util.ArrayList;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpSession;

import org.t2framework.confeito.contexts.Request;
import org.t2framework.confeito.contexts.Session;

/**
 * <#if locale="en">
 * <p>
 * Concrete class of org.t2framework.contexts.Session.
 * 
 * </p>
 * <#else>
 * <p>
 * 
 * </p>
 * </#if>
 * 
 * @author shot
 * @see org.t2framework.confeito.contexts.Session
 */
public class SessionImpl implements Session {

	protected Request request;

	protected HttpSession session;

	public SessionImpl(final Request request) {
		this.request = request;
		this.request.setSession(this);
		this.session = request.getNativeResource().getSession(true);
	}

	@SuppressWarnings("unchecked")
	@Override
	public List<String> getAttributeNames() {
		List<String> ret = new ArrayList<String>();
		for (Enumeration<String> e = getNativeResource().getAttributeNames(); e
				.hasMoreElements();) {
			ret.add(e.nextElement());
		}
		return ret;
	}

	@Override
	@SuppressWarnings("unchecked")
	public Map<String, Object> getAttributesAsMap() {
		Map<String, Object> ret = new HashMap<String, Object>();
		for (Enumeration<String> e = getNativeResource().getAttributeNames(); e
				.hasMoreElements();) {
			String key = (String) e.nextElement();
			Object value = getNativeResource().getAttribute(key);
			ret.put(key, value);
		}

		return ret;
	}

	@SuppressWarnings("unchecked")
	@Override
	public <V> V getAttribute(String key) {
		return (V) getNativeResource().getAttribute(key);
	}

	@SuppressWarnings("unchecked")
	@Override
	public synchronized <V> V removeAttribute(String key) {
		Object ret = getAttribute(key);
		getNativeResource().removeAttribute(key);
		return (V) ret;
	}

	@Override
	public synchronized <V> void setAttribute(String key, V value) {
		getNativeResource().setAttribute(key, value);
	}

	@Override
	public HttpSession getNativeResource() {
		return session;
	}

}