001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/model/filterencoding/FeatureFilter.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.model.filterencoding;
037
038 import java.util.ArrayList;
039
040 import org.deegree.model.feature.Feature;
041
042 /**
043 * Encapsulates the information of a <Filter>element that consists of a number of FeatureId
044 * constraints (only) (as defined in the FeatureId DTD).
045 *
046 * @author <a href="mailto:schneider@lat-lon.de">Markus Schneider</a>
047 * @author last edited by: $Author: mschneider $
048 *
049 * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $
050 */
051 public class FeatureFilter extends AbstractFilter {
052
053 /** FeatureIds the FeatureFilter is based on */
054 private ArrayList<FeatureId> featureIds = new ArrayList<FeatureId>();
055
056 /**
057 *
058 */
059 public FeatureFilter() {
060 // it's empty
061 }
062
063 /**
064 * @param fids
065 */
066 public FeatureFilter( ArrayList<FeatureId> fids ) {
067 this.featureIds = fids;
068 }
069
070 /**
071 * Adds a FeatureId constraint.
072 *
073 * @param featureId
074 *
075 */
076 public void addFeatureId( FeatureId featureId ) {
077 featureIds.add( featureId );
078 }
079
080 /**
081 * @return the contained FeatureIds.
082 *
083 */
084 public ArrayList<FeatureId> getFeatureIds() {
085 return featureIds;
086 }
087
088 /**
089 * Calculates the <tt>FeatureFilter</tt>'s logical value based on the ID of the given
090 * <tt>Feature</tt>. FIXME!!! Use a TreeSet (or something) to speed up comparison.
091 *
092 * @param feature
093 * that determines the Id
094 * @return true, if the <tt>FeatureFilter</tt> evaluates to true, else false
095 * @throws FilterEvaluationException
096 * if the evaluation fails
097 */
098 public boolean evaluate( Feature feature )
099 throws FilterEvaluationException {
100 String id = feature.getId();
101 for ( int i = 0; i < featureIds.size(); i++ ) {
102 FeatureId featureId = featureIds.get( i );
103 if ( id.equals( featureId.getValue() ) )
104 return true;
105 }
106 return false;
107 }
108
109 public StringBuffer toXML() {
110 StringBuffer sb = new StringBuffer( 500 );
111 sb.append( "<ogc:Filter xmlns:ogc='http://www.opengis.net/ogc'>" );
112 for ( int i = 0; i < featureIds.size(); i++ ) {
113 FeatureId fid = featureIds.get( i );
114 sb.append( fid.toXML() );
115 }
116 sb.append( "</ogc:Filter>" );
117 return sb;
118 }
119
120 public StringBuffer to100XML() {
121 return toXML();
122 }
123
124 public StringBuffer to110XML() {
125 return toXML();
126 }
127 }