001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/model/coverage/grid/oracle/OracleGeoRasterGridCoverageReader.java $ 002 003 /*---------------------------------------------------------------------------- 004 This file is part of deegree, http://deegree.org/ 005 Copyright (C) 2001-2009 by: 006 Department of Geography, University of Bonn 007 and 008 lat/lon GmbH 009 and 010 grit GmbH 011 http://www.grit.de 012 013 This library is free software; you can redistribute it and/or modify it under 014 the terms of the GNU Lesser General Public License as published by the Free 015 Software Foundation; either version 2.1 of the License, or (at your option) 016 any later version. 017 This library is distributed in the hope that it will be useful, but WITHOUT 018 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 019 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more 020 details. 021 You should have received a copy of the GNU Lesser General Public License 022 along with this library; if not, write to the Free Software Foundation, Inc., 023 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 024 025 Contact information: 026 027 lat/lon GmbH 028 Aennchenstr. 19, 53177 Bonn 029 Germany 030 http://lat-lon.de/ 031 032 Department of Geography, University of Bonn 033 Prof. Dr. Klaus Greve 034 Postfach 1147, 53001 Bonn 035 Germany 036 http://www.geographie.uni-bonn.de/deegree/ 037 038 e-mail: info@deegree.org 039 ----------------------------------------------------------------------------*/ 040 041 package org.deegree.model.coverage.grid.oracle; 042 043 import java.awt.image.BufferedImage; 044 import java.awt.image.RenderedImage; 045 import java.io.IOException; 046 047 import org.deegree.datatypes.CodeList; 048 import org.deegree.datatypes.parameter.GeneralParameterValueIm; 049 import org.deegree.datatypes.parameter.InvalidParameterNameException; 050 import org.deegree.datatypes.parameter.InvalidParameterValueException; 051 import org.deegree.datatypes.parameter.OperationParameterIm; 052 import org.deegree.datatypes.parameter.ParameterNotFoundException; 053 import org.deegree.framework.log.ILogger; 054 import org.deegree.framework.log.LoggerFactory; 055 import org.deegree.io.oraclegeoraster.GeoRasterDescription; 056 import org.deegree.io.oraclegeoraster.GeoRasterReader; 057 import org.deegree.model.coverage.grid.AbstractGridCoverageReader; 058 import org.deegree.model.coverage.grid.Format; 059 import org.deegree.model.coverage.grid.GridCoverage; 060 import org.deegree.model.coverage.grid.ImageGridCoverage; 061 import org.deegree.model.spatialschema.Envelope; 062 import org.deegree.ogcwebservices.LonLatEnvelope; 063 import org.deegree.ogcwebservices.wcs.describecoverage.CoverageOffering; 064 065 /** 066 * Reader for Coverages stored in Oracle 10g GeoRaster format 067 * 068 * 069 * @version $Revision: 20437 $ 070 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a> 071 * @author <a href="mailto:reichhelm@grit.de">Stephan Reichhelm</a> 072 * @author <a href="mailto:lipski@grit.de">Eryk Lipski</a> 073 * @author last edited by: $Author: apoth $ 074 * 075 * @version 1.0. $Revision: 20437 $, $Date: 2009-10-29 09:49:03 +0100 (Do, 29. Okt 2009) $ 076 * 077 * @since 2.0 078 */ 079 public class OracleGeoRasterGridCoverageReader extends AbstractGridCoverageReader { 080 081 private static final ILogger LOG = LoggerFactory.getLogger( OracleGeoRasterGridCoverageReader.class ); 082 083 /** 084 * 085 * @param jdbc 086 * description of the JDBC connection to a Orable DB 087 * @param table 088 * name of the table storing the GeoRaster 089 * @param column 090 * name of the column the target GeoRaster is stored 091 * @param identification 092 * a SQL where clause that identifies the target georaster 093 * @param description 094 * @param envelope 095 * @param format 096 */ 097 public OracleGeoRasterGridCoverageReader( GeoRasterDescription grDesc, 098 CoverageOffering description, Envelope envelope, 099 Format format ) { 100 super( grDesc, description, envelope, format ); 101 } 102 103 public void dispose() 104 throws IOException { 105 106 } 107 108 /** 109 * reads a GridCoverage from a Oracle 10g GeoRaster 110 * 111 * @param parameters - 112 */ 113 public GridCoverage read( GeneralParameterValueIm[] parameters ) 114 throws InvalidParameterNameException, InvalidParameterValueException, 115 ParameterNotFoundException, IOException { 116 117 float width = -1; 118 float height = -1; 119 for ( int i = 0; i < parameters.length; i++ ) { 120 OperationParameterIm op = (OperationParameterIm) parameters[i].getDescriptor(); 121 String name = op.getName(); 122 if ( name.equalsIgnoreCase( "WIDTH" ) ) { 123 Object o = op.getDefaultValue(); 124 width = ( (Integer) o ).intValue(); 125 } else if ( name.equalsIgnoreCase( "HEIGHT" ) ) { 126 Object o = op.getDefaultValue(); 127 height = ( (Integer) o ).intValue(); 128 } 129 } 130 131 /* 132 * creating an intersection is not needed, because the oracle raster exporter creates a new image in 133 * requested size. 134 */ 135 Object[] o = getEnvelopes(); 136 137 GeoRasterDescription grDesc = (GeoRasterDescription) getSource(); 138 139 RenderedImage img = null; 140 try { 141 img = GeoRasterReader.exportRaster( grDesc, (Envelope) o[0], width, height ); 142 } catch ( Exception e ) { 143 LOG.logError( "could not read GeoRaster: ", e ); 144 throw new IOException( "could not read GeoRaster: " + e.getMessage() ); 145 } 146 147 CoverageOffering co = (CoverageOffering) description.clone(); 148 co.setLonLatEnvelope( (LonLatEnvelope) o[1] ); 149 150 return new ImageGridCoverage( co, (Envelope) o[0], (BufferedImage) img ); 151 152 } 153 154 /** 155 * returns the region in native and LonLatEnvelope of the request. 156 * 157 * @return returns the region in native and LonLatEnvelope of the request. 158 */ 159 private Object[] getEnvelopes() { 160 161 CodeList[] cl = description.getSupportedCRSs().getNativeSRSs(); 162 String code = cl[0].getCodes()[0]; 163 164 LonLatEnvelope lonLatEnvelope = calcLonLatEnvelope( envelope, code ); 165 166 return new Object[] { envelope, lonLatEnvelope }; 167 } 168 }