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