    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/graphics/sld/LayerFeatureConstraints.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.graphics.sld;
    037
    038    import java.util.ArrayList;
    039    import java.util.List;
    040
    041    import org.deegree.framework.xml.Marshallable;
    042
    043    /**
    044     * The LayerFeatureConstraints element is optional in a NamedLayer and allows the user to specify
    045     * constraints on what features of what feature types are to be selected by the named-layer
    046     * reference. It is essentially a filter that allows the selection of fewer features than are
    047     * present in the named layer.
    048     *
    049     *
    050     * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
    051     * @author last edited by: $Author: mschneider $
    052     *
    053     * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
    054     */
    055    public class LayerFeatureConstraints implements Marshallable {
    056        private List<FeatureTypeConstraint> featureTypeConstraint = null;
    057
    058        /**
    059         * constructor initializing the class with the <LayerFeatureConstraints>
    060         * @param featureTypeConstraint
    061         */
    062        public LayerFeatureConstraints( FeatureTypeConstraint[] featureTypeConstraint ) {
    063            this.featureTypeConstraint = new ArrayList<FeatureTypeConstraint>();
    064            setFeatureTypeConstraint( featureTypeConstraint );
    065        }
    066
    067        /**
    068         * A FeatureTypeConstraint element is used to identify a feature type by a well-known name,
    069         * using the FeatureTypeName element.
    070         *
    071         * @return the FeatureTypeConstraints as Array
    072         *
    073         */
    074        public FeatureTypeConstraint[] getFeatureTypeConstraint() {
    075            return featureTypeConstraint.toArray( new FeatureTypeConstraint[featureTypeConstraint.size()] );
    076        }
    077
    078        /**
    079         * sets the <FeatureTypeConstraint>
    080         *
    081         * @param featureTypeConstraint
    082         *            the <FeatureTypeConstraint>
    083         */
    084        public void setFeatureTypeConstraint( FeatureTypeConstraint[] featureTypeConstraint ) {
    085            this.featureTypeConstraint.clear();
    086
    087            if ( featureTypeConstraint != null ) {
    088                for ( int i = 0; i < featureTypeConstraint.length; i++ ) {
    089                    this.featureTypeConstraint.add( featureTypeConstraint[i] );
    090                }
    091            }
    092        }
    093
    094        /**
    095         * adds the <FeatureTypeConstraint>
    096         *
    097         * @param featureTypeConstraint
    098         *            the <FeatureTypeConstraint>
    099         */
    100        public void addFeatureTypeConstraint( FeatureTypeConstraint featureTypeConstraint ) {
    101            this.featureTypeConstraint.add( featureTypeConstraint );
    102        }
    103
    104        /**
    105         * Removes a FeatureTypeConstraint.
    106         *
    107         * @param featureTypeConstraint
    108         *            the <FeatureTypeConstraint>
    109         */
    110        public void removeFeatureTypeConstraint( FeatureTypeConstraint featureTypeConstraint ) {
    111            this.featureTypeConstraint.remove( this.featureTypeConstraint.indexOf( featureTypeConstraint ) );
    112        }
    113
    114        /**
    115         * returns the LayerFeatureConstraints as String.
    116         *
    117         * @return the LayerFeatureConstraints as String
    118         */
    119        @Override
    120        public String toString() {
    121            String ret = getClass().getName() + "\n";
    122            ret = "featureTypeConstraint = " + featureTypeConstraint + "\n";
    123
    124            return ret;
    125        }
    126
    127        /**
    128         * exports the content of the Font as XML formated String
    129         *
    130         * @return xml representation of the Font
    131         */
    132        public String exportAsXML() {
    133
    134            StringBuffer sb = new StringBuffer( 1000 );
    135            sb.append( "<LayerFeatureConstraints>" );
    136            for ( int i = 0; i < featureTypeConstraint.size(); i++ ) {
    137                sb.append( ( (Marshallable) featureTypeConstraint.get( i ) ).exportAsXML() );
    138            }
    139            sb.append( "</LayerFeatureConstraints>" );
    140
    141            return sb.toString();
    142        }
    143
    144    }