001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/tags/2.1/src/org/deegree/portal/portlet/modules/actions/LogoutUser.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2007 by:
006 EXSE, Department of Geography, University of Bonn
007 http://www.giub.uni-bonn.de/deegree/
008 lat/lon GmbH
009 http://www.lat-lon.de
010
011 This library is free software; you can redistribute it and/or
012 modify it under the terms of the GNU Lesser General Public
013 License as published by the Free Software Foundation; either
014 version 2.1 of the License, or (at your option) any later version.
015
016 This library is distributed in the hope that it will be useful,
017 but WITHOUT ANY WARRANTY; without even the implied warranty of
018 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
019 Lesser General Public License for more details.
020
021 You should have received a copy of the GNU Lesser General Public
022 License along with this library; if not, write to the Free Software
023 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
024
025 Contact:
026
027 Andreas Poth
028 lat/lon GmbH
029 Aennchenstr. 19
030 53177 Bonn
031 Germany
032 E-Mail: poth@lat-lon.de
033
034 Prof. Dr. Klaus Greve
035 Department of Geography
036 University of Bonn
037 Meckenheimer Allee 166
038 53115 Bonn
039 Germany
040 E-Mail: greve@giub.uni-bonn.de
041
042 ---------------------------------------------------------------------------*/
043 package org.deegree.portal.portlet.modules.actions;
044
045 import java.io.File;
046 import java.io.FileOutputStream;
047 import java.io.IOException;
048 import java.util.Enumeration;
049
050 import javax.servlet.http.HttpSession;
051 import javax.xml.parsers.ParserConfigurationException;
052
053 import org.deegree.framework.xml.XMLFragment;
054 import org.deegree.portal.context.ViewContext;
055 import org.deegree.portal.context.XMLFactory;
056
057 /**
058 * This class can be used within listener classes that will be
059 * called if a user logs out from a portal. All contexts used at
060 * this moment will be stored in the users WMC directory having
061 * filenames starting with 'VIEWCONTEXT'.<BR>
062 * At the moment a concrete listener is available for Jetspeed
063 * 1.6 @see org.deegree.portal.portlet.modules.actions.IGeoJetspeed16LogoutUser
064 *
065 *
066 * @version $Revision: 7409 $
067 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
068 * @author last edited by: $Author: apoth $
069 *
070 * @version 1.0. $Revision: 7409 $, $Date: 2007-06-01 10:26:03 +0200 (Fr, 01 Jun 2007) $
071 *
072 * @since 2.0
073 */
074 class LogoutUser {
075
076 /**
077 *
078 * @param dir
079 * @param ses
080 * @throws IOException
081 * @throws ParserConfigurationException
082 */
083 void storeCurrentContexts( File dir, HttpSession ses )
084 throws ParserConfigurationException, IOException {
085
086 Enumeration en = ses.getAttributeNames();
087 // because a porlat may use more than one web map context
088 // parallel at different map windows we must iterate over
089 // all session attributes indicating a WMC currently in use
090 if ( en != null ) {
091
092 while ( en.hasMoreElements() ) {
093 String name = (String) en.nextElement();
094 Object val = ses.getAttribute( name );
095 if ( val != null && val instanceof ViewContext
096 && name.indexOf( AbstractPortletPerform.CURRENT_WMC ) > -1 ) {
097 storeContext( dir, name, (ViewContext) val );
098 }
099 }
100 }
101 }
102
103 /**
104 * stores the passed web map context as loggedout WMC into
105 * the current users WMC directory
106 *
107 * @param dir
108 * @param name
109 * @param context
110 * @throws ParserConfigurationException
111 * @throws IOException
112 */
113 private void storeContext( File dir, String name, ViewContext context )
114 throws ParserConfigurationException, IOException {
115
116 XMLFragment xml = XMLFactory.export( context );
117
118 File file = new File( dir.getAbsolutePath() + '/' + name + ".xml" );
119
120 FileOutputStream fos = new FileOutputStream( file );
121 xml.write( fos );
122 fos.close();
123
124 }
125
126 }