001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/model/filterencoding/ComplexFilter.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 contains an Operation (only) (as defined
044 * in the Filter DTD). Operation is one of the following types:
045 * <ul>
046 * <li>spatial_ops</li>
047 * <li>comparison_ops</li>
048 * <li>logical_ops</li>
049 * </ul>
050 *
051 * @author <a href="mailto:schneider@lat-lon.de">Markus Schneider</a>
052 * @author last edited by: $Author: mschneider $
053 *
054 * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
055 */
056 public class ComplexFilter extends AbstractFilter {
057
058 /**
059 * Operation the ComplexFilter is based on
060 */
061 private Operation operation;
062
063 /**
064 * Constructs a new ComplexFilter based on the given operation.
065 *
066 * @param operation
067 */
068 public ComplexFilter( Operation operation ) {
069 this.operation = operation;
070 }
071
072 /**
073 * Constructs a new <tt>ComplexFilter<tt> that consists of an
074 * empty <tt>LogicalOperation</tt> of the given type.
075 * <p>
076 * @param operatorId OperationDefines.AND, OperationDefines.OR or
077 * OperationDefines.NOT
078 */
079 public ComplexFilter( int operatorId ) {
080 operation = new LogicalOperation( operatorId, new ArrayList<Operation>() );
081 }
082
083 /**
084 * Constructs a new <tt>ComplexFilter<tt> that consists of a
085 * <tt>LogicalOperation</tt> with the given <tt>Filter</tt>.
086 * <p>
087 * @param filter1 first Filter to be used
088 * @param filter2 second Filter to be used
089 * null, if operatorId == OperationDefines.NOT
090 * @param operatorId OperationDefines.AND, OperationDefines.OR or
091 * OperationDefines.NOT
092 */
093 public ComplexFilter( ComplexFilter filter1, ComplexFilter filter2, int operatorId ) {
094
095 // extract the Operations from the Filters
096 ArrayList<Operation> arguments = new ArrayList<Operation>();
097 arguments.add( filter1.getOperation() );
098 if ( filter2 != null )
099 arguments.add( filter2.getOperation() );
100
101 operation = new LogicalOperation( operatorId, arguments );
102 }
103
104 /**
105 * Returns the contained Operation.
106 *
107 * @return the contained Operation.
108 */
109 public Operation getOperation() {
110 return operation;
111 }
112
113 /**
114 * Calculates the <tt>Filter</tt>'s logical value based on the certain property values of the
115 * given feature.
116 *
117 * @param feature
118 * that determines the values of <tt>PropertyNames</tt> in the expression
119 * @return true, if the <tt>Filter</tt> evaluates to true, else false
120 * @throws FilterEvaluationException
121 * if the evaluation fails
122 */
123 public boolean evaluate( Feature feature )
124 throws FilterEvaluationException {
125 return operation.evaluate( feature );
126 }
127
128 public StringBuffer toXML() {
129 return to110XML();
130 }
131
132 public StringBuffer to100XML() {
133 StringBuffer sb = new StringBuffer( 1000 );
134 sb.append( "<ogc:Filter xmlns:ogc='http://www.opengis.net/ogc'>" );
135 sb.append( operation.to100XML() );
136 sb.append( "</ogc:Filter>\n" );
137 return sb;
138 }
139
140 public StringBuffer to110XML() {
141 StringBuffer sb = new StringBuffer( 1000 );
142 sb.append( "<ogc:Filter xmlns:ogc='http://www.opengis.net/ogc'>" );
143 sb.append( operation.to110XML() );
144 sb.append( "</ogc:Filter>\n" );
145 return sb;
146 }
147 }