001    //  Copyright 2011 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.SymbolConstants;
018    import org.apache.tapestry5.ioc.annotations.Symbol;
019    import org.apache.tapestry5.services.Session;
020    import org.apache.tapestry5.services.SessionPersistedObjectAnalyzer;
021    
022    import javax.servlet.http.HttpServletRequest;
023    import javax.servlet.http.HttpSession;
024    
025    public class TapestrySessionFactoryImpl implements TapestrySessionFactory
026    {
027        private boolean clustered;
028        private final SessionPersistedObjectAnalyzer analyzer;
029        private final HttpServletRequest request;
030    
031        public TapestrySessionFactoryImpl(
032                @Symbol(SymbolConstants.CLUSTERED_SESSIONS)
033                boolean clustered,
034                SessionPersistedObjectAnalyzer analyzer,
035                HttpServletRequest request)
036        {
037            this.clustered = clustered;
038            this.analyzer = analyzer;
039            this.request = request;
040        }
041    
042        public Session getSession(boolean create)
043        {
044            final HttpSession httpSession = request.getSession(create);
045    
046            if (httpSession == null)
047            {
048                return null;
049            }
050    
051            if (clustered)
052            {
053                return new ClusteredSessionImpl(request, httpSession, analyzer);
054            }
055    
056            return new SessionImpl(request, httpSession);
057        }
058    }