001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/portal/portlet/modules/actions/LogoutUser.java $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036 package org.deegree.portal.portlet.modules.actions;
037
038 import java.io.File;
039 import java.io.FileOutputStream;
040 import java.io.IOException;
041 import java.util.Enumeration;
042
043 import javax.servlet.http.HttpSession;
044 import javax.xml.parsers.ParserConfigurationException;
045
046 import org.deegree.framework.xml.XMLFragment;
047 import org.deegree.portal.context.ViewContext;
048 import org.deegree.portal.context.XMLFactory;
049
050 /**
051 * This class can be used within listener classes that will be called if a user logs out from a
052 * portal. All contexts used at this moment will be stored in the users WMC directory having
053 * filenames starting with 'VIEWCONTEXT'.<BR>
054 * At the moment a concrete listener is available for Jetspeed 1.6
055 *
056 * @see org.deegree.portal.portlet.modules.actions.IGeoJetspeed16LogoutUser
057 *
058 *
059 * @version $Revision: 18195 $
060 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
061 * @author last edited by: $Author: mschneider $
062 *
063 * @version 1.0. $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $
064 *
065 * @since 2.0
066 */
067 class LogoutUser {
068
069 /**
070 *
071 * @param dir
072 * @param ses
073 * @throws IOException
074 * @throws ParserConfigurationException
075 */
076 void storeCurrentContexts( File dir, HttpSession ses )
077 throws ParserConfigurationException, IOException {
078
079 Enumeration en = ses.getAttributeNames();
080 // because a porlat may use more than one web map context
081 // parallel at different map windows we must iterate over
082 // all session attributes indicating a WMC currently in use
083 if ( en != null ) {
084
085 while ( en.hasMoreElements() ) {
086 String name = (String) en.nextElement();
087 Object val = ses.getAttribute( name );
088 if ( val != null && val instanceof ViewContext
089 && name.indexOf( AbstractPortletPerform.CURRENT_WMC ) > -1 ) {
090 storeContext( dir, name, (ViewContext) val );
091 }
092 }
093 }
094 }
095
096 /**
097 * stores the passed web map context as loggedout WMC into the current users WMC directory
098 *
099 * @param dir
100 * @param name
101 * @param context
102 * @throws ParserConfigurationException
103 * @throws IOException
104 */
105 private void storeContext( File dir, String name, ViewContext context )
106 throws ParserConfigurationException, IOException {
107
108 XMLFragment xml = XMLFactory.export( context );
109
110 File file = new File( dir.getAbsolutePath() + '/' + name + ".xml" );
111
112 FileOutputStream fos = new FileOutputStream( file );
113 xml.write( fos );
114 fos.close();
115
116 }
117
118 }