001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_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: 21672 $
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: 21672 $, $Date: 2009-12-29 09:44:20 +0100 (Di, 29 Dez 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 grDesc
086 * @param description
087 * @param envelope
088 * @param format
089 */
090 public OracleGeoRasterGridCoverageReader( GeoRasterDescription grDesc, CoverageOffering description,
091 Envelope envelope, Format format ) {
092 super( grDesc, description, envelope, format );
093 }
094
095 /**
096 *
097 */
098 public void dispose()
099 throws IOException {
100
101 }
102
103 /**
104 * reads a GridCoverage from a Oracle 10g GeoRaster
105 *
106 * @param parameters
107 * -
108 */
109 public GridCoverage read( GeneralParameterValueIm[] parameters )
110 throws InvalidParameterNameException, InvalidParameterValueException,
111 ParameterNotFoundException, IOException {
112
113 float width = -1;
114 float height = -1;
115 for ( int i = 0; i < parameters.length; i++ ) {
116 OperationParameterIm op = (OperationParameterIm) parameters[i].getDescriptor();
117 String name = op.getName();
118 if ( name.equalsIgnoreCase( "WIDTH" ) ) {
119 Object o = op.getDefaultValue();
120 width = ( (Integer) o ).intValue();
121 } else if ( name.equalsIgnoreCase( "HEIGHT" ) ) {
122 Object o = op.getDefaultValue();
123 height = ( (Integer) o ).intValue();
124 }
125 }
126
127 /*
128 * creating an intersection is not needed, because the oracle raster exporter creates a new image in requested
129 * size.
130 */
131 Object[] o = getEnvelopes();
132
133 GeoRasterDescription grDesc = (GeoRasterDescription) getSource();
134
135 RenderedImage img = null;
136 try {
137 img = GeoRasterReader.exportRaster( grDesc, (Envelope) o[0], width, height );
138 } catch ( Exception e ) {
139 LOG.logError( "could not read GeoRaster: ", e );
140 throw new IOException( "could not read GeoRaster: " + e.getMessage() );
141 }
142
143 CoverageOffering co = (CoverageOffering) description.clone();
144 co.setLonLatEnvelope( (LonLatEnvelope) o[1] );
145
146 return new ImageGridCoverage( co, (Envelope) o[0], (BufferedImage) img );
147
148 }
149
150 /**
151 * returns the region in native and LonLatEnvelope of the request.
152 *
153 * @return returns the region in native and LonLatEnvelope of the request.
154 */
155 private Object[] getEnvelopes() {
156
157 CodeList[] cl = description.getSupportedCRSs().getNativeSRSs();
158 String code = cl[0].getCodes()[0];
159
160 LonLatEnvelope lonLatEnvelope = calcLonLatEnvelope( envelope, code );
161
162 return new Object[] { envelope, lonLatEnvelope };
163 }
164 }