001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/branches/2.2_testing/src/org/deegree/graphics/sld/LayerFeatureConstraints.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2008 by:
006 EXSE, Department of Geography, University of Bonn
007 http://www.giub.uni-bonn.de/deegree/
008 lat/lon GmbH
009 http://www.lat-lon.de
010
011 This library is free software; you can redistribute it and/or
012 modify it under the terms of the GNU Lesser General Public
013 License as published by the Free Software Foundation; either
014 version 2.1 of the License, or (at your option) any later version.
015
016 This library is distributed in the hope that it will be useful,
017 but WITHOUT ANY WARRANTY; without even the implied warranty of
018 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
019 Lesser General Public License for more details.
020
021 You should have received a copy of the GNU Lesser General Public
022 License along with this library; if not, write to the Free Software
023 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
024
025 Contact:
026
027 Andreas Poth
028 lat/lon GmbH
029 Aennchenstr. 19
030 53115 Bonn
031 Germany
032 E-Mail: poth@lat-lon.de
033
034 Prof. Dr. Klaus Greve
035 Department of Geography
036 University of Bonn
037 Meckenheimer Allee 166
038 53115 Bonn
039 Germany
040 E-Mail: greve@giub.uni-bonn.de
041
042
043 ---------------------------------------------------------------------------*/
044 package org.deegree.graphics.sld;
045
046 import java.util.ArrayList;
047 import java.util.List;
048
049 import org.deegree.framework.xml.Marshallable;
050
051 /**
052 * The LayerFeatureConstraints element is optional in a NamedLayer and allows the user to specify
053 * constraints on what features of what feature types are to be selected by the named-layer
054 * reference. It is essentially a filter that allows the selection of fewer features than are
055 * present in the named layer.
056 *
057 *
058 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
059 * @author last edited by: $Author: apoth $
060 *
061 * @version. $Revision: 9340 $, $Date: 2007-12-27 13:32:12 +0100 (Do, 27 Dez 2007) $
062 */
063 public class LayerFeatureConstraints implements Marshallable {
064 private List<FeatureTypeConstraint> featureTypeConstraint = null;
065
066 /**
067 * constructor initializing the class with the <LayerFeatureConstraints>
068 */
069 public LayerFeatureConstraints( FeatureTypeConstraint[] featureTypeConstraint ) {
070 this.featureTypeConstraint = new ArrayList<FeatureTypeConstraint>();
071 setFeatureTypeConstraint( featureTypeConstraint );
072 }
073
074 /**
075 * A FeatureTypeConstraint element is used to identify a feature type by a well-known name,
076 * using the FeatureTypeName element.
077 *
078 * @return the FeatureTypeConstraints as Array
079 *
080 */
081 public FeatureTypeConstraint[] getFeatureTypeConstraint() {
082 return featureTypeConstraint.toArray( new FeatureTypeConstraint[featureTypeConstraint.size()] );
083 }
084
085 /**
086 * sets the <FeatureTypeConstraint>
087 *
088 * @param featureTypeConstraint
089 * the <FeatureTypeConstraint>
090 */
091 public void setFeatureTypeConstraint( FeatureTypeConstraint[] featureTypeConstraint ) {
092 this.featureTypeConstraint.clear();
093
094 if ( featureTypeConstraint != null ) {
095 for ( int i = 0; i < featureTypeConstraint.length; i++ ) {
096 this.featureTypeConstraint.add( featureTypeConstraint[i] );
097 }
098 }
099 }
100
101 /**
102 * adds the <FeatureTypeConstraint>
103 *
104 * @param featureTypeConstraint
105 * the <FeatureTypeConstraint>
106 */
107 public void addFeatureTypeConstraint( FeatureTypeConstraint featureTypeConstraint ) {
108 this.featureTypeConstraint.add( featureTypeConstraint );
109 }
110
111 /**
112 * Removes a FeatureTypeConstraint.
113 *
114 * @param featureTypeConstraint
115 * the <FeatureTypeConstraint>
116 */
117 public void removeFeatureTypeConstraint( FeatureTypeConstraint featureTypeConstraint ) {
118 this.featureTypeConstraint.remove( this.featureTypeConstraint.indexOf( featureTypeConstraint ) );
119 }
120
121 /**
122 * returns the LayerFeatureConstraints as String.
123 *
124 * @return the LayerFeatureConstraints as String
125 */
126 public String toString() {
127 String ret = getClass().getName() + "\n";
128 ret = "featureTypeConstraint = " + featureTypeConstraint + "\n";
129
130 return ret;
131 }
132
133 /**
134 * exports the content of the Font as XML formated String
135 *
136 * @return xml representation of the Font
137 */
138 public String exportAsXML() {
139
140 StringBuffer sb = new StringBuffer( 1000 );
141 sb.append( "<LayerFeatureConstraints>" );
142 for ( int i = 0; i < featureTypeConstraint.size(); i++ ) {
143 sb.append( ( (Marshallable) featureTypeConstraint.get( i ) ).exportAsXML() );
144 }
145 sb.append( "</LayerFeatureConstraints>" );
146
147 return sb.toString();
148 }
149
150 }