001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/io/datastore/RequestCRSTransformationTrigger.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.io.datastore; 037 038 import org.deegree.datatypes.QualifiedName; 039 import org.deegree.framework.log.ILogger; 040 import org.deegree.framework.log.LoggerFactory; 041 import org.deegree.framework.trigger.Trigger; 042 import org.deegree.framework.trigger.TriggerException; 043 import org.deegree.io.datastore.schema.MappedFeatureType; 044 import org.deegree.model.crs.CRSTransformationException; 045 import org.deegree.model.crs.CoordinateSystem; 046 import org.deegree.model.crs.GeoTransformer; 047 import org.deegree.model.filterencoding.ComplexFilter; 048 import org.deegree.model.filterencoding.Filter; 049 import org.deegree.model.filterencoding.FilterTools; 050 import org.deegree.model.filterencoding.SpatialOperation; 051 import org.deegree.ogcwebservices.wfs.operation.Query; 052 053 /** 054 * Trigger implementation for transformation of geometries being part of a WFS request into the CRS 055 * of the comparsion geometries at the physical datasource. <br> 056 * At th moment just support for GetFeature is implemented TODO support for update and delete 057 * requests 058 * 059 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a> 060 * @author last edited by: $Author: mschneider $ 061 * 062 * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $ 063 */ 064 public class RequestCRSTransformationTrigger implements Trigger { 065 066 private static final ILogger LOG = LoggerFactory.getLogger( RequestCRSTransformationTrigger.class ); 067 068 private String name; 069 070 /** 071 * @param caller 072 * calling instance 073 * @param values 074 * parameter values passed from the caller. Because RequestCRSTransformationTrigger 075 * is intented to be used as a preTrigger this will be all parameters passed to the 076 * calling method 077 */ 078 public Object[] doTrigger( Object caller, Object... values ) { 079 080 Query query = (Query) values[0]; 081 082 Filter filter = query.getFilter(); 083 084 if ( filter instanceof ComplexFilter ) { 085 // transformations are just required if a filter is complex 086 // because FeatureID filters does not contain spatial operations 087 ComplexFilter cFilter = (ComplexFilter) filter; 088 SpatialOperation[] so = FilterTools.extractSpatialFilter( cFilter ); 089 QualifiedName[] qns = query.getTypeNames(); 090 GeoTransformer gt = null; 091 for ( int i = 0; i < qns.length; i++ ) { 092 MappedFeatureType mft = ( (Datastore) caller ).getFeatureType( qns[i] ); 093 CoordinateSystem targetCRS = mft.getGMLSchema().getDefaultCS(); 094 for ( int j = 0; j < so.length; j++ ) { 095 CoordinateSystem sourceCRS = so[i].getGeometry().getCoordinateSystem(); 096 if ( sourceCRS != null && !targetCRS.equals( sourceCRS ) ) { 097 try { 098 if ( gt == null ) { 099 gt = new GeoTransformer( targetCRS ); 100 } 101 so[j].setGeometry( gt.transform( so[i].getGeometry() ) ); 102 } catch ( CRSTransformationException e ) { 103 LOG.logError( e.getMessage(), e ); 104 throw new TriggerException( e ); 105 } 106 } 107 } 108 } 109 110 } 111 112 return values; 113 } 114 115 public String getName() { 116 return name; 117 } 118 119 public void setName( String name ) { 120 this.name = name; 121 } 122 123 /** 124 * Returns a string representation of the object. 125 * 126 * @return a string representation of the object 127 */ 128 @Override 129 public String toString() { 130 return "Trigger name: " + name; 131 } 132 }