001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/tags/2.1/src/org/deegree/model/coverage/grid/CompoundGridCoverageReader.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2006 by:
006 EXSE, Department of Geography, University of Bonn
007 http://www.giub.uni-bonn.de/deegree/
008 lat/lon GmbH
009 http://www.lat-lon.de
010
011 This library is free software; you can redistribute it and/or
012 modify it under the terms of the GNU Lesser General Public
013 License as published by the Free Software Foundation; either
014 version 2.1 of the License, or (at your option) any later version.
015
016 This library is distributed in the hope that it will be useful,
017 but WITHOUT ANY WARRANTY; without even the implied warranty of
018 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
019 Lesser General Public License for more details.
020
021 You should have received a copy of the GNU Lesser General Public
022 License along with this library; if not, write to the Free Software
023 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
024
025 Contact:
026
027 Andreas Poth
028 lat/lon GmbH
029 Aennchenstr. 19
030 53115 Bonn
031 Germany
032 E-Mail: poth@lat-lon.de
033
034 Klaus Greve
035 Department of Geography
036 University of Bonn
037 Meckenheimer Allee 166
038 53115 Bonn
039 Germany
040 E-Mail: klaus.greve@uni-bonn.de
041
042
043 ---------------------------------------------------------------------------*/
044 package org.deegree.model.coverage.grid;
045
046 import java.io.IOException;
047 import java.util.ArrayList;
048 import java.util.List;
049
050 import org.deegree.datatypes.parameter.GeneralParameterValueIm;
051 import org.deegree.datatypes.parameter.InvalidParameterNameException;
052 import org.deegree.datatypes.parameter.InvalidParameterValueException;
053 import org.deegree.datatypes.parameter.ParameterNotFoundException;
054 import org.deegree.framework.log.ILogger;
055 import org.deegree.framework.log.LoggerFactory;
056 import org.deegree.model.spatialschema.Envelope;
057 import org.deegree.ogcwebservices.LonLatEnvelope;
058 import org.deegree.ogcwebservices.wcs.configuration.File;
059 import org.deegree.ogcwebservices.wcs.describecoverage.CoverageOffering;
060
061 /**
062 * This reader enables creation of <tt>GridCoverage</tt>s from more than one source. This will be
063 * used for example for tiled images.
064 *
065 *
066 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
067 * @author last edited by: $Author: apoth $
068 *
069 * @version $Revision: 7587 $, $Date: 2007-06-19 11:29:12 +0200 (Di, 19 Jun 2007) $
070 */
071
072 public class CompoundGridCoverageReader extends AbstractGridCoverageReader {
073
074 private static final ILogger LOGGER = LoggerFactory.getLogger( CompoundGridCoverageReader.class );
075
076 /**
077 * @param source
078 * @param description
079 * @param envelope
080 * @param format
081 */
082 public CompoundGridCoverageReader( File[] source, CoverageOffering description,
083 Envelope envelope, Format format ) {
084 super( source, description, envelope, format );
085 }
086
087 /**
088 * Read the grid coverage from the current stream position, and move to the next grid coverage.
089 *
090 * @param parameters
091 * An optional set of parameters. Should be any or all of the parameters returned by
092 * {@link "org.opengis.coverage.grid.Format#getReadParameters"}.
093 * @return A new {@linkplain GridCoverage grid coverage} from the input source.
094 * @throws InvalidParameterNameException
095 * if a parameter in <code>parameters</code> doesn't have a recognized name.
096 * @throws InvalidParameterValueException
097 * if a parameter in <code>parameters</code> doesn't have a valid value.
098 * @throws ParameterNotFoundException
099 * if a parameter was required for the operation but was not provided in the
100 * <code>parameters</code> list.
101 * @throws IOException
102 * if a read operation failed for some other input/output reason, including
103 * {@link java.io.FileNotFoundException} if no file with the given <code>name</code>
104 * can be found, or {@link javax.imageio.IIOException} if an error was thrown by the
105 * underlying image library.
106 */
107 public GridCoverage read( GeneralParameterValueIm[] parameters )
108 throws InvalidParameterNameException, InvalidParameterValueException,
109 ParameterNotFoundException, IOException {
110
111 File[] files = (File[]) source;
112 List<GridCoverage> list = new ArrayList<GridCoverage>( files.length );
113 for ( int i = 0; i < files.length; i++ ) {
114 GridCoverageReader gcr = createGridCoverageReader( files[i] );
115 if ( gcr != null ) {
116 GridCoverage gc = gcr.read( parameters );
117 if ( gc != null ) {
118 list.add( gc );
119 }
120 }
121 }
122 return createGridCoverage( list );
123 }
124
125 /**
126 * creates a GridCoverage compound from the GridCoverages contained in the passed List. It is
127 * assumed that all GridCoverages in the List are of the same type and that the list contains at
128 * least one GridCoverage
129 *
130 * @param list
131 * @return a GridCoverage compound from the GridCoverages contained in the passed List.
132 */
133 private GridCoverage createGridCoverage( List<GridCoverage> list ) {
134
135 GridCoverage gc = null;
136 if ( list != null && list.size() > 0 ) {
137 gc = list.get( 0 );
138 if ( gc instanceof ImageGridCoverage ) {
139 ImageGridCoverage[] tmp = new ImageGridCoverage[list.size()];
140 tmp = list.toArray( tmp );
141 gc = new ImageGridCoverage( description, envelope, tmp );
142 } else if ( gc instanceof ByteGridCoverage ) {
143 ByteGridCoverage[] tmp = new ByteGridCoverage[list.size()];
144 tmp = list.toArray( tmp );
145 gc = new ByteGridCoverage( description, envelope, tmp );
146 } else if ( gc instanceof ShortGridCoverage ) {
147 ShortGridCoverage[] tmp = new ShortGridCoverage[list.size()];
148 tmp = list.toArray( tmp );
149 gc = new ShortGridCoverage( description, envelope, tmp );
150 } else if ( gc instanceof FloatGridCoverage ) {
151 FloatGridCoverage[] tmp = new FloatGridCoverage[list.size()];
152 tmp = list.toArray( tmp );
153 gc = new FloatGridCoverage( description, envelope, tmp );
154 }
155 }
156
157 return gc;
158 }
159
160 /**
161 * creates a GridCoverageReader depending on the native format of the data source
162 *
163 * @param file
164 * @return a GridCoverageReader depending on the native format of the data source
165 * @throws IOException
166 */
167 private GridCoverageReader createGridCoverageReader( File file )
168 throws IOException, InvalidParameterValueException {
169
170 // calculate and set LonLatBoundingBox for the GC CoverageOffering
171 // as source of the returned GridCoverage
172 LonLatEnvelope lle = calcLonLatEnvelope( file.getEnvelope(), file.getCrs().getName() );
173 CoverageOffering desc = (CoverageOffering) description.clone();
174 desc.setLonLatEnvelope( lle );
175
176 Envelope env = envelope.createIntersection( file.getEnvelope() );
177 GridCoverageReader gcr = null;
178 if ( env != null ) {
179 if ( format.getName().equalsIgnoreCase( "GEOTIFF" ) ) {
180 gcr = new GeoTIFFGridCoverageReader( file, desc, env, format );
181 } else if ( isImageFormat( format ) ) {
182 gcr = new ImageGridCoverageReader( file, desc, env, format );
183 } else {
184 throw new IOException( "not supported file format: " + format.getName() );
185 }
186 } else {
187 LOGGER.logInfo( "no data available for BBOX: ", file.getEnvelope() );
188 }
189
190 return gcr;
191 }
192
193 /**
194 * returns true if the passed format is an image format
195 *
196 * @param format
197 * @return <code>true</code> if the passed format is an image format
198 */
199 private boolean isImageFormat( Format format ) {
200 String frmt = format.getName().toUpperCase();
201 return frmt.equalsIgnoreCase( "png" ) || frmt.equalsIgnoreCase( "bmp" )
202 || frmt.equalsIgnoreCase( "tif" ) || frmt.equalsIgnoreCase( "tiff" )
203 || frmt.equalsIgnoreCase( "gif" ) || frmt.equalsIgnoreCase( "jpg" )
204 || frmt.equalsIgnoreCase( "jpeg" ) || frmt.indexOf( "ECW" ) > -1;
205 }
206
207 /**
208 * This method is an implementation dummy, it doensn't actually do anything.
209 */
210 public void dispose() throws IOException {
211 // throwin nottin
212 }
213
214 }