001 //$HeadURL$
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
037 package org.deegree.model.filterencoding;
038
039 import java.net.URI;
040 import java.net.URL;
041 import java.util.List;
042
043 import org.deegree.framework.log.ILogger;
044 import org.deegree.framework.log.LoggerFactory;
045 import org.deegree.framework.util.StringTools;
046 import org.deegree.framework.xml.NamespaceContext;
047 import org.deegree.framework.xml.XMLFragment;
048 import org.deegree.framework.xml.XMLParsingException;
049 import org.deegree.framework.xml.XMLTools;
050 import org.deegree.model.feature.Feature;
051 import org.deegree.ogcbase.CommonNamespaces;
052 import org.w3c.dom.Node;
053
054 /**
055 *
056 *
057 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
058 * @author last edited by: $Author: poth $
059 *
060 * @version $Revision: 6251 $, $Date: 2007-03-19 16:59:28 +0100 (Mo, 19 Mrz 2007) $
061 */
062 public class FunctionNormalize extends Function {
063
064 private static final ILogger LOG = LoggerFactory.getLogger( FunctionNormalize.class );
065
066 private static XMLFragment rules;
067
068 private static NamespaceContext nsContext;
069
070 private static void initialize() {
071 if ( rules == null ) {
072 URL url = FunctionNormalize.class.getResource( "normalization_rules.xml" );
073 try {
074 rules = new XMLFragment( url );
075 nsContext = CommonNamespaces.getNamespaceContext();
076 nsContext.addNamespace( "dgfunct", new URI( "http://www.deegree.org/filter/function" ) );
077 } catch ( Exception e ) {
078 LOG.logError( e.getMessage(), e );
079 }
080
081 }
082 }
083
084 /**
085 * default constructor initializing rules if not already done
086 *
087 */
088 FunctionNormalize() {
089 initialize();
090 }
091
092 /*
093 * (non-Javadoc)
094 *
095 * @see org.deegree.model.filterencoding.Function#evaluate(org.deegree.model.feature.Feature)
096 */
097 @Override
098 public Object evaluate( Feature feature )
099 throws FilterEvaluationException {
100 Literal literal = (Literal) args.get( 0 );
101 String s = literal.getValue().toUpperCase();
102 try {
103 List<Node> nodes = XMLTools.getNodes( rules.getRootElement(), "//dgfunct:Rule", nsContext );
104 for ( Node node : nodes ) {
105 String regex = XMLTools.getRequiredNodeAsString( node, "dgfunct:RegExpr", nsContext );
106 String replacement = XMLTools.getRequiredNodeAsString( node, "dgfunct:Replacement", nsContext );
107 if ( LOG.getLevel() == ILogger.LOG_DEBUG ) {
108 LOG.logDebug( StringTools.concat( 500, "Rule: Match '", "' replace with '", "'" ) );
109 }
110 s = s.replaceAll( regex, replacement );
111 LOG.logDebug( "Result: ", s );
112 }
113 } catch ( XMLParsingException e ) {
114 LOG.logError( e.getMessage(), e );
115 throw new FilterEvaluationException( e.getMessage() );
116 }
117
118 return s;
119 }
120
121 }