001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/branches/2.2_testing/src/org/deegree/ogcwebservices/wps/execute/DefaultRequestQueueManager.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/exse/
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 Aennchenstraße 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.ogcwebservices.wps.execute;
044
045 import java.util.LinkedList;
046
047 import org.deegree.framework.log.ILogger;
048 import org.deegree.framework.log.LoggerFactory;
049 import org.deegree.ogcwebservices.OGCWebServiceException;
050
051 /**
052 * DefaultRequestQueueManager.java
053 *
054 * Created on 24.03.2006. 19:50:08h
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 DefaultRequestQueueManager implements RequestQueueManager {
065
066 private static final ILogger LOG = LoggerFactory.getLogger( DefaultRequestQueueManager.class );
067
068 private LinkedList<ExecuteRequest> requestQueue = null;
069
070 /**
071 *
072 */
073 public boolean addRequestToQueue( ExecuteRequest executeRequest ) throws OGCWebServiceException {
074 boolean success = false;
075
076 if ( null == requestQueue ) {
077 requestQueue = new LinkedList<ExecuteRequest>();
078 }
079
080 try {
081 requestQueue.add( executeRequest );
082 success = true;
083 LOG.logInfo( "Request successfully added to queue!" );
084 } catch ( Exception e ) {
085 LOG.logError( "Problem while saving request to queue!" );
086 }
087 return success;
088 }
089
090 /**
091 *
092 */
093 public ExecuteRequest getRequestFromQueue() throws OGCWebServiceException {
094 ExecuteRequest execRequest = null;
095 if ( requestQueue.size() > 0 ) {
096 LOG.logInfo( "SIZE vorher: " + requestQueue.size() );
097 execRequest = requestQueue.removeFirst();
098 LOG.logInfo( "SIZE nachher: " + requestQueue.size() );
099 }
100 return execRequest;
101 }
102
103 /**
104 *
105 */
106 public int getLengthOfQueue() throws OGCWebServiceException {
107
108 int lengthOfQueue = 0;
109
110 if ( null != requestQueue ) {
111 lengthOfQueue = requestQueue.size();
112 }
113 return lengthOfQueue;
114 }
115
116 }