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
015package org.apache.tapestry5.internal.services;
016
017import org.apache.tapestry5.SymbolConstants;
018import org.apache.tapestry5.ioc.annotations.Symbol;
019import org.apache.tapestry5.services.Session;
020import org.apache.tapestry5.services.SessionPersistedObjectAnalyzer;
021
022import javax.servlet.http.HttpServletRequest;
023import javax.servlet.http.HttpSession;
024
025public 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}