    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    }