    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_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    }