001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/ogcbase/IndexStep.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.ogcbase;
037
038 import org.deegree.datatypes.QualifiedName;
039
040 /**
041 * {@link PropertyPathStep} implementation that selects a specified occurence of an element (using
042 * the element name as property name).
043 *
044 * @author <a href="mailto:schneider@lat-lon.de">Markus Schneider </a>
045 * @author last edited by: $Author: mschneider $
046 *
047 * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $
048 *
049 * @see PropertyPathStep
050 */
051 public class IndexStep extends PropertyPathStep {
052
053 private int selectedIndex;
054
055 /**
056 * Creates a new instance of <code>IndexStep</code> that selects the specified occurence of
057 * the element with the given name.
058 *
059 * @param elementName
060 * @param selectedIndex
061 */
062 IndexStep( QualifiedName elementName, int selectedIndex ) {
063 super( elementName );
064 this.selectedIndex = selectedIndex;
065 }
066
067 /**
068 * Returns the index of the selected element.
069 *
070 * @return the index of the selected element
071 */
072 public int getSelectedIndex() {
073 return this.selectedIndex;
074 }
075
076 @Override
077 public int hashCode() {
078 return this.selectedIndex + this.propertyName.hashCode();
079 }
080
081 @Override
082 public boolean equals( Object obj ) {
083 if ( !( obj instanceof IndexStep ) ) {
084 return false;
085 }
086 IndexStep that = (IndexStep) obj;
087 return this.getSelectedIndex() == that.getSelectedIndex() && this.propertyName.equals( that.propertyName );
088 }
089
090 @Override
091 public String toString() {
092 return this.propertyName.getPrefixedName() + "[" + this.selectedIndex + "]";
093 }
094 }