001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/branches/2.2_testing/src/org/deegree/ogcwebservices/wfs/WFServiceFactory.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2008 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 53115 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.ogcwebservices.wfs;
044
045 import java.io.IOException;
046 import java.net.URL;
047
048 import org.deegree.framework.log.ILogger;
049 import org.deegree.framework.log.LoggerFactory;
050 import org.deegree.framework.xml.InvalidConfigurationException;
051 import org.deegree.i18n.Messages;
052 import org.deegree.io.datastore.DatastoreException;
053 import org.deegree.io.datastore.LockManager;
054 import org.deegree.ogcwebservices.OGCWebServiceException;
055 import org.deegree.ogcwebservices.wfs.configuration.WFSConfiguration;
056 import org.deegree.ogcwebservices.wfs.configuration.WFSConfigurationDocument;
057 import org.xml.sax.SAXException;
058
059 /**
060 * Factory class for creating instances of {@link WFService}.
061 *
062 * TODO manage several instances of different WFServices in a pool
063 *
064 * @see WFService
065 *
066 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth </a>
067 * @author last edited by: $Author: apoth $
068 *
069 * @version $Revision: 9348 $, $Date: 2007-12-27 17:59:14 +0100 (Do, 27 Dez 2007) $
070 */
071 public class WFServiceFactory {
072
073 private static final ILogger LOG = LoggerFactory.getLogger( WFServiceFactory.class );
074
075 private static WFSConfiguration CONFIG;
076
077 private static boolean lockManagerInitialized;
078
079 private WFServiceFactory() {
080 // prevent instantiation
081 }
082
083 /**
084 *
085 * @return
086 * @throws OGCWebServiceException
087 */
088 public static WFService createInstance()
089 throws OGCWebServiceException {
090 if ( CONFIG == null ) {
091 throw new OGCWebServiceException( WFServiceFactory.class.getName(),
092 "configuration has not been initialized" );
093 }
094 if ( !lockManagerInitialized ) {
095 // TODO synchronize using other object
096 synchronized ( LOG ) {
097 try {
098 LockManager.initialize( CONFIG.getDeegreeParams().getLockManagerDirectory() );
099 } catch ( DatastoreException e ) {
100 LOG.logError( e.getMessage(), e );
101 throw new OGCWebServiceException( "WFSServiceFactory", e.getMessage() );
102 }
103 }
104 lockManagerInitialized = true;
105 }
106 return new WFService( CONFIG );
107 }
108
109 /**
110 *
111 * @param wfsConfiguration
112 * @return
113 * @throws OGCWebServiceException
114 */
115 public static WFService createInstance( WFSConfiguration wfsConfiguration )
116 throws OGCWebServiceException {
117 LOG.logDebug( "Creating WFService instance." );
118 if ( !lockManagerInitialized ) {
119 // TODO synchronize using other object
120 synchronized ( LOG ) {
121 try {
122 LockManager.initialize( wfsConfiguration.getDeegreeParams().getLockManagerDirectory() );
123 } catch ( DatastoreException e ) {
124 LOG.logError( e.getMessage(), e );
125 throw new OGCWebServiceException( "WFSServiceFactory", e.getMessage() );
126 }
127 }
128 lockManagerInitialized = true;
129 }
130 return new WFService( wfsConfiguration );
131 }
132
133 /**
134 * Sets the <code>WFSConfiguration</code>. Afterwards, all <code>WFService</code> instances
135 * returned by <code>createInstance()</code> will use this configuration.
136 *
137 * @param config
138 * @throws InvalidConfigurationException
139 */
140 public synchronized static void setConfiguration( WFSConfiguration config )
141 throws InvalidConfigurationException {
142 validateConfiguration( config );
143 CONFIG = config;
144 // TODO: if service instances have already been created
145 // - destroy all instances
146 // - create new service instances and put them in the pool
147 }
148
149 /**
150 *
151 * @param serviceConfigurationURL
152 * @throws InvalidConfigurationException
153 * @throws IOException
154 */
155 public synchronized static void setConfiguration( URL serviceConfigurationURL )
156 throws InvalidConfigurationException, IOException {
157
158 try {
159 WFSConfigurationDocument cd = new WFSConfigurationDocument();
160 cd.load( serviceConfigurationURL );
161 setConfiguration( cd.getConfiguration() );
162 } catch ( InvalidConfigurationException e ) {
163 throw new InvalidConfigurationException( "WFSServiceFactory", e.getMessage() );
164 } catch ( SAXException e ) {
165 throw new InvalidConfigurationException( "WFSServiceFactory", e.getMessage() );
166 }
167
168 }
169
170 /**
171 * @return CONFIG
172 */
173 public static WFSConfiguration getConfiguration() {
174 return CONFIG;
175 }
176
177 private static void validateConfiguration( WFSConfiguration config )
178 throws InvalidConfigurationException {
179 String[] versions = config.getServiceIdentification().getServiceTypeVersions();
180 for ( String version : versions ) {
181 if ( !WFService.VERSION.equals( version ) ) {
182 String msg = Messages.getMessage( "WFS_CONF_UNSUPPORTED_VERSION", version, WFService.VERSION );
183 throw new InvalidConfigurationException( msg );
184 }
185 }
186 }
187 }