001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/ogcwebservices/wfs/WFServiceFactory.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.ogcwebservices.wfs;
037
038 import java.io.IOException;
039 import java.net.URL;
040
041 import org.deegree.framework.log.ILogger;
042 import org.deegree.framework.log.LoggerFactory;
043 import org.deegree.framework.xml.InvalidConfigurationException;
044 import org.deegree.i18n.Messages;
045 import org.deegree.io.datastore.DatastoreException;
046 import org.deegree.io.datastore.LockManager;
047 import org.deegree.ogcwebservices.OGCWebServiceException;
048 import org.deegree.ogcwebservices.wfs.configuration.WFSConfiguration;
049 import org.deegree.ogcwebservices.wfs.configuration.WFSConfigurationDocument;
050 import org.xml.sax.SAXException;
051
052 /**
053 * Factory class for creating instances of {@link WFService}.
054 *
055 * TODO manage several instances of different WFServices in a pool
056 *
057 * @see WFService
058 *
059 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth </a>
060 * @author last edited by: $Author: mschneider $
061 *
062 * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
063 */
064 public class WFServiceFactory {
065
066 private static final ILogger LOG = LoggerFactory.getLogger( WFServiceFactory.class );
067
068 private static WFSConfiguration CONFIG;
069
070 private static boolean lockManagerInitialized;
071
072 private WFServiceFactory() {
073 // prevent instantiation
074 }
075
076 /**
077 *
078 * @return a WFService instance.
079 * @throws OGCWebServiceException
080 */
081 public static WFService createInstance()
082 throws OGCWebServiceException {
083 if ( CONFIG == null ) {
084 throw new OGCWebServiceException( WFServiceFactory.class.getName(),
085 "configuration has not been initialized" );
086 }
087 synchronized ( WFServiceFactory.class ) {
088 if ( !lockManagerInitialized ) {
089 try {
090 LockManager.initialize( CONFIG.getDeegreeParams().getLockManagerDirectory() );
091 } catch ( DatastoreException e ) {
092 LOG.logError( e.getMessage(), e );
093 throw new OGCWebServiceException( "WFSServiceFactory", e.getMessage() );
094 }
095 lockManagerInitialized = true;
096 }
097 }
098 return new WFService( CONFIG );
099 }
100
101 /**
102 *
103 * @param wfsConfiguration
104 * @return a WFSService instance created from the given configuration.
105 * @throws OGCWebServiceException
106 */
107 public static WFService createInstance( WFSConfiguration wfsConfiguration )
108 throws OGCWebServiceException {
109 LOG.logDebug( "Creating WFService instance." );
110 synchronized ( WFServiceFactory.class ) {
111 if ( !lockManagerInitialized ) {
112 try {
113 LockManager.initialize( wfsConfiguration.getDeegreeParams().getLockManagerDirectory() );
114 } catch ( DatastoreException e ) {
115 LOG.logError( e.getMessage(), e );
116 throw new OGCWebServiceException( "WFSServiceFactory", e.getMessage() );
117 }
118 lockManagerInitialized = true;
119 }
120 }
121 return new WFService( wfsConfiguration );
122 }
123
124 /**
125 * Sets the <code>WFSConfiguration</code>. Afterwards, all <code>WFService</code> instances returned by
126 * <code>createInstance()</code> will use this configuration.
127 *
128 * @param config
129 * @throws InvalidConfigurationException
130 */
131 public synchronized static void setConfiguration( WFSConfiguration config )
132 throws InvalidConfigurationException {
133 validateConfiguration( config );
134 CONFIG = config;
135 // TODO: if service instances have already been created
136 // - destroy all instances
137 // - create new service instances and put them in the pool
138 }
139
140 /**
141 *
142 * @param serviceConfigurationURL
143 * @throws InvalidConfigurationException
144 * @throws IOException
145 */
146 public synchronized static void setConfiguration( URL serviceConfigurationURL )
147 throws InvalidConfigurationException, IOException {
148
149 try {
150 WFSConfigurationDocument cd = new WFSConfigurationDocument();
151 cd.load( serviceConfigurationURL );
152 setConfiguration( cd.getConfiguration() );
153 } catch ( InvalidConfigurationException e ) {
154 throw new InvalidConfigurationException( "WFSServiceFactory", e.getMessage() );
155 } catch ( SAXException e ) {
156 throw new InvalidConfigurationException( "WFSServiceFactory", e.getMessage() );
157 }
158
159 }
160
161 /**
162 * @return CONFIG
163 */
164 public static WFSConfiguration getConfiguration() {
165 return CONFIG;
166 }
167
168 private static void validateConfiguration( WFSConfiguration config )
169 throws InvalidConfigurationException {
170 String[] versions = config.getServiceIdentification().getServiceTypeVersions();
171 for ( String version : versions ) {
172 if ( !WFService.VERSION.equals( version ) ) {
173 String msg = Messages.getMessage( "WFS_CONF_UNSUPPORTED_VERSION", version, WFService.VERSION );
174 throw new InvalidConfigurationException( msg );
175 }
176 }
177 }
178 }