001    // Copyright 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.portlet;
016    
017    import java.util.List;
018    
019    import javax.portlet.PortletSession;
020    
021    import org.apache.hivemind.util.Defense;
022    import org.apache.tapestry.describe.DescriptionReceiver;
023    import org.apache.tapestry.web.WebSession;
024    import org.apache.tapestry.web.WebUtils;
025    
026    /**
027     * Adapts a {@link javax.portlet.PortletSession}as a {@link org.apache.tapestry.web.WebSession}.
028     * 
029     * @author Howard M. Lewis Ship
030     * @since 4.0
031     */
032    public class PortletWebSession implements WebSession
033    {
034        private final PortletSession _portletSession;
035    
036        public PortletWebSession(final PortletSession portletSession)
037        {
038            Defense.notNull(portletSession, "portletSession");
039    
040            _portletSession = portletSession;
041        }
042    
043        public void describeTo(DescriptionReceiver receiver)
044        {
045            receiver.describeAlternate(_portletSession);
046        }
047    
048        public String getId()
049        {
050            return _portletSession.getId();
051        }
052    
053        public boolean isNew()
054        {
055            return _portletSession.isNew();
056        }
057    
058        public List getAttributeNames()
059        {
060            return WebUtils.toSortedList(_portletSession.getAttributeNames());
061        }
062    
063        public Object getAttribute(String name)
064        {
065            return _portletSession.getAttribute(name);
066        }
067    
068        public void setAttribute(String name, Object attribute)
069        {
070            _portletSession.setAttribute(name, attribute);
071        }
072    
073        public void invalidate()
074        {
075            _portletSession.invalidate();
076        }
077    
078    }