001    //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/ogcwebservices/wps/describeprocess/DescribeProcessRequestHandler.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.wps.describeprocess;
037    
038    import java.util.ArrayList;
039    import java.util.List;
040    import java.util.Map;
041    
042    import org.deegree.datatypes.Code;
043    import org.deegree.framework.log.ILogger;
044    import org.deegree.framework.log.LoggerFactory;
045    import org.deegree.ogcwebservices.InvalidParameterValueException;
046    import org.deegree.ogcwebservices.OGCWebServiceException;
047    import org.deegree.ogcwebservices.wps.WPService;
048    import org.deegree.ogcwebservices.wps.configuration.WPSConfiguration;
049    import org.deegree.ogcwebservices.wps.execute.Process;
050    
051    /**
052     * DescribeProcessRequestHandler.java
053     *
054     * Created on 10.03.2006. 12:06:58h
055     *
056     * @author <a href="mailto:christian@kiehle.org">Christian Kiehle</a>
057     * @author <a href="mailto:christian.heier@gmx.de">Christian Heier</a>
058     *
059     * @version 1.0.
060     *
061     * @since 2.0
062     */
063    
064    public class DescribeProcessRequestHandler {
065    
066        private static ILogger LOG = LoggerFactory.getLogger( DescribeProcessRequestHandler.class );
067    
068        private WPService wpService = null;
069    
070        /**
071         *
072         * @param wpService
073         */
074        public DescribeProcessRequestHandler( WPService wpService ) {
075            this.wpService = wpService;
076        }
077    
078        /**
079         *
080         * @param describeProcessRequest
081         * @return the describtion of the process.
082         * @throws OGCWebServiceException
083         */
084        public ProcessDescriptions handleRequest( DescribeProcessRequest describeProcessRequest )
085                                throws OGCWebServiceException {
086    
087            // Get configuration from current wps instance
088            WPSConfiguration wpsConfiguration = wpService.getConfiguration();
089    
090            // Get the map of registered Processes from wps configuration
091            Map<String, Process> processesMap = wpsConfiguration.getRegisteredProcesses();
092    
093            // Get list of requested process descriptions from
094            // wpsDescribeProcessRequest
095            List<Code> requestedProcessesList = describeProcessRequest.getIdentifier();
096    
097            // Prepare list of process description to return
098            List<ProcessDescription> processDescriptionList = new ArrayList<ProcessDescription>();
099    
100            // If the requested process is registered in current wps instance add it to processDescriptions, otherwise throw
101            // exception
102            int requestedProcessesSize = requestedProcessesList.size();
103            for ( int i = 0; i < requestedProcessesSize; i++ ) {
104    
105                Code requestedProcess = requestedProcessesList.get( i );
106    
107                String identifier = requestedProcess.getCode().toUpperCase();
108    
109                if ( processesMap.containsKey( identifier ) ) {
110    
111                    Process process = processesMap.get( identifier );
112    
113                    ProcessDescription processDescription = process.getProcessDescription();
114                    processDescriptionList.add( i, processDescription );
115    
116                } else {
117                    String msg = "Process '" + identifier + "' is not supported by this WPS.";
118                    LOG.logError( msg );
119                    throw new InvalidParameterValueException( "Identifier", msg );
120                }
121            }
122            return new ProcessDescriptions( processDescriptionList );
123        }
124    
125    }