001    // Copyright 2008 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.tapestry5.internal.services;
016    
017    import org.apache.tapestry5.internal.events.EndOfRequestListener;
018    import org.apache.tapestry5.services.Request;
019    import org.apache.tapestry5.services.Session;
020    
021    /**
022     * A listener that invokes {@link org.apache.tapestry5.services.Session#restoreDirtyObjects()}.
023     */
024    public class RestoreDirtySessionObjects implements EndOfRequestListener
025    {
026        private final Request request;
027    
028        public RestoreDirtySessionObjects(Request request)
029        {
030            this.request = request;
031        }
032    
033        public void requestDidComplete()
034        {
035            Session session = request.getSession(false);
036    
037            if (session != null)
038                session.restoreDirtyObjects();
039        }
040    }