001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/ogcwebservices/wps/execute/DefaultRequestQueueManager.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.execute;
037
038 import java.util.LinkedList;
039
040 import org.deegree.framework.log.ILogger;
041 import org.deegree.framework.log.LoggerFactory;
042 import org.deegree.ogcwebservices.OGCWebServiceException;
043
044 /**
045 * DefaultRequestQueueManager.java
046 *
047 * Created on 24.03.2006. 19:50:08h
048 *
049 * @author <a href="mailto:christian@kiehle.org">Christian Kiehle</a>
050 * @author <a href="mailto:christian.heier@gmx.de">Christian Heier</a>
051 *
052 * @version 1.0.
053 *
054 * @since 2.0
055 */
056
057 public class DefaultRequestQueueManager implements RequestQueueManager {
058
059 private static final ILogger LOG = LoggerFactory.getLogger( DefaultRequestQueueManager.class );
060
061 private LinkedList<ExecuteRequest> requestQueue = null;
062
063 /**
064 *
065 */
066 public boolean addRequestToQueue( ExecuteRequest executeRequest ) throws OGCWebServiceException {
067 boolean success = false;
068
069 if ( null == requestQueue ) {
070 requestQueue = new LinkedList<ExecuteRequest>();
071 }
072
073 try {
074 requestQueue.add( executeRequest );
075 success = true;
076 LOG.logInfo( "Request successfully added to queue!" );
077 } catch ( Exception e ) {
078 LOG.logError( "Problem while saving request to queue!" );
079 }
080 return success;
081 }
082
083 /**
084 *
085 */
086 public ExecuteRequest getRequestFromQueue() throws OGCWebServiceException {
087 ExecuteRequest execRequest = null;
088 if ( requestQueue.size() > 0 ) {
089 LOG.logInfo( "SIZE vorher: " + requestQueue.size() );
090 execRequest = requestQueue.removeFirst();
091 LOG.logInfo( "SIZE nachher: " + requestQueue.size() );
092 }
093 return execRequest;
094 }
095
096 /**
097 *
098 */
099 public int getLengthOfQueue() throws OGCWebServiceException {
100
101 int lengthOfQueue = 0;
102
103 if ( null != requestQueue ) {
104 lengthOfQueue = requestQueue.size();
105 }
106 return lengthOfQueue;
107 }
108
109 }