    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/graphics/LazyRasterLayer.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.graphics;
    037
    038    import java.io.IOException;
    039    import java.util.ArrayList;
    040    import java.util.List;
    041
    042    import org.deegree.framework.log.ILogger;
    043    import org.deegree.framework.log.LoggerFactory;
    044    import org.deegree.io.JDBCConnection;
    045    import org.deegree.io.oraclegeoraster.GeoRasterDescription;
    046    import org.deegree.model.coverage.grid.Format;
    047    import org.deegree.model.coverage.grid.GridCoverage;
    048    import org.deegree.model.coverage.grid.GridCoverageExchange;
    049    import org.deegree.model.coverage.grid.GridCoverageReader;
    050    import org.deegree.model.crs.CRSFactory;
    051    import org.deegree.model.crs.CoordinateSystem;
    052    import org.deegree.model.crs.UnknownCRSException;
    053    import org.deegree.model.spatialschema.Envelope;
    054    import org.deegree.model.spatialschema.GeometryFactory;
    055    import org.deegree.ogcwebservices.InvalidParameterValueException;
    056    import org.deegree.ogcwebservices.wcs.configuration.Directory;
    057    import org.deegree.ogcwebservices.wcs.configuration.DirectoryResolution;
    058    import org.deegree.ogcwebservices.wcs.configuration.Extension;
    059    import org.deegree.ogcwebservices.wcs.configuration.File;
    060    import org.deegree.ogcwebservices.wcs.configuration.FileResolution;
    061    import org.deegree.ogcwebservices.wcs.configuration.OracleGeoRasterResolution;
    062    import org.deegree.ogcwebservices.wcs.configuration.Resolution;
    063    import org.deegree.ogcwebservices.wcs.configuration.Shape;
    064    import org.deegree.ogcwebservices.wcs.configuration.ShapeResolution;
    065    import org.deegree.ogcwebservices.wcs.describecoverage.CoverageOffering;
    066
    067    /**
    068     *
    069     *
    070     *
    071     * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
    072     * @author last edited by: $Author: mschneider $
    073     *
    074     * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
    075     */
    076    public class LazyRasterLayer extends AbstractLayer {
    077
    078        private ILogger LOG = LoggerFactory.getLogger( LazyRasterLayer.class );
    079
    080        private Extension resource;
    081
    082        private CoverageOffering coverageOffering;
    083
    084        /**
    085         *
    086         * @param name
    087         * @param coverageOffering
    088         * @throws Exception
    089         */
    090        public LazyRasterLayer( String name, CoverageOffering coverageOffering ) throws Exception {
    091            super( name );
    092            this.coverageOffering = coverageOffering;
    093            resource = coverageOffering.getExtension();
    094        }
    095
    096        /**
    097         *
    098         * @param name
    099         * @param crs
    100         * @param coverageOffering
    101         * @throws Exception
    102         */
    103        public LazyRasterLayer( String name, CoordinateSystem crs, CoverageOffering coverageOffering ) throws Exception {
    104            super( name, crs );
    105            this.coverageOffering = coverageOffering;
    106            if ( coverageOffering != null ) {
    107                resource = coverageOffering.getExtension();
    108            }
    109        }
    110
    111        /**
    112         * @param crs
    113         * @throws Exception
    114         *
    115         */
    116        public void setCoordinatesSystem( CoordinateSystem crs )
    117                                throws Exception {
    118            // not supported yet
    119        }
    120
    121        /*
    122         * (non-Javadoc)
    123         *
    124         * @see org.deegree.graphics.AbstractLayer#getBoundingBox()
    125         */
    126        @Override
    127        public Envelope getBoundingBox() {
    128            return coverageOffering.getDomainSet().getSpatialDomain().getEnvelops()[0];
    129        }
    130
    131        /**
    132         *
    133         * @param envelope
    134         * @param resolution
    135         * @return grid coverage for envelope and resolution
    136         * @throws IOException
    137         * @throws InvalidParameterValueException
    138         */
    139        public GridCoverage getRaster( Envelope envelope, double resolution )
    140                                throws InvalidParameterValueException, IOException {
    141
    142            Resolution[] resolutions = resource.getResolutions( resolution );
    143
    144            String nativeCRS = coverageOffering.getSupportedCRSs().getNativeSRSs()[0].getCodes()[0];
    145            CoordinateSystem crs;
    146            try {
    147                crs = CRSFactory.create( nativeCRS );
    148            } catch ( UnknownCRSException e ) {
    149                throw new InvalidParameterValueException( e );
    150            }
    151            envelope = GeometryFactory.createEnvelope( envelope.getMin(), envelope.getMax(), crs );
    152
    153            GridCoverageReader reader = null;
    154            if ( resolutions[0] instanceof FileResolution ) {
    155                reader = getFileReader( resolutions, envelope );
    156            } else if ( resolutions[0] instanceof ShapeResolution ) {
    157                reader = getShapeReader( resolutions, envelope );
    158            } else if ( resolutions[0] instanceof DirectoryResolution ) {
    159                reader = getDirectoryReader( resolutions, envelope );
    160            } else if ( resolutions[0] instanceof OracleGeoRasterResolution ) {
    161                reader = getOracleGeoRasterReader( resolutions, envelope );
    162            } else {
    163                throw new InvalidParameterValueException( "not supported coverage resolution: "
    164                                                          + resolutions[0].getClass().getName() );
    165            }
    166            return reader.read( null );
    167        }
    168
    169        /**
    170         *
    171         * @param resolutions DirectoryResolutions
    172         * @param env
    173         * @return grid coverage reader for resolutions
    174         * @throws IOException
    175         * @throws InvalidParameterValueException
    176         */
    177        private GridCoverageReader getDirectoryReader( Resolution[] resolutions, Envelope env )
    178                                throws IOException, InvalidParameterValueException {
    179
    180            LOG.logInfo( "reading coverage from directories" );
    181
    182            Directory[] dirs = ( (DirectoryResolution) resolutions[0] ).getDirectories( env );
    183
    184            GridCoverageExchange gce = new GridCoverageExchange( null );
    185            Format format = new Format( coverageOffering.getSupportedFormats().getNativeFormat() );
    186
    187            return gce.getReader( dirs, coverageOffering, env, format );
    188        }
    189
    190        /**
    191         *
    192         * @param resolutions FileResolutions
    193         * @param env
    194         * @return grid coverage reader for resolutions
    195         * @throws IOException
    196         * @throws InvalidParameterValueException
    197         */
    198        private GridCoverageReader getFileReader( Resolution[] resolutions, Envelope env )
    199                                throws IOException, InvalidParameterValueException {
    200
    201            LOG.logInfo( "reading coverage from files" );
    202
    203            File[] files = ( (FileResolution) resolutions[0] ).getFiles();
    204            List<File> list = new ArrayList<File>();
    205            for ( int i = 0; i < files.length; i++ ) {
    206                Envelope fileEnv = files[i].getEnvelope();
    207                if ( fileEnv.intersects( env ) ) {
    208                    list.add( files[i] );
    209                }
    210            }
    211            files = list.toArray( new File[list.size()] );
    212
    213            GridCoverageExchange gce = new GridCoverageExchange( null );
    214            Format format = new Format( coverageOffering.getSupportedFormats().getNativeFormat() );
    215
    216            return gce.getReader( files, coverageOffering, env, format );
    217        }
    218
    219        /**
    220         *
    221         * @param resolutions OracleGeoRasterResolution
    222         * @param env
    223         * @return grid coverage reader for resolutions
    224         * @throws InvalidParameterValueException
    225         * @throws IOException
    226         */
    227        private GridCoverageReader getOracleGeoRasterReader( Resolution[] resolutions, Envelope env )
    228                                throws InvalidParameterValueException, IOException {
    229
    230            LOG.logInfo( "reading coverage from oracle georaster" );
    231
    232            JDBCConnection jdbc = ( (OracleGeoRasterResolution) resolutions[0] ).getJDBCConnection();
    233            String table = ( (OracleGeoRasterResolution) resolutions[0] ).getTable();
    234            String rdtTable = ( (OracleGeoRasterResolution) resolutions[0] ).getRdtTable();
    235            String column = ( (OracleGeoRasterResolution) resolutions[0] ).getColumn();
    236            String identification = ( (OracleGeoRasterResolution) resolutions[0] ).getIdentification();
    237            int level = ( (OracleGeoRasterResolution) resolutions[0] ).getLevel();
    238            GeoRasterDescription grd = new GeoRasterDescription( jdbc, table, rdtTable, column, identification, level );
    239
    240            GridCoverageExchange gce = new GridCoverageExchange( null );
    241            Format format = new Format( coverageOffering.getSupportedFormats().getNativeFormat() );
    242
    243            return gce.getReader( grd, coverageOffering, env, format );
    244
    245        }
    246
    247        /**
    248         *
    249         * @param resolutions ShapeResolution
    250         * @param env
    251         * @return grid coverage reader for resolutions
    252         * @throws IOException
    253         * @throws InvalidParameterValueException
    254         */
    255        private GridCoverageReader getShapeReader( Resolution[] resolutions, Envelope env )
    256                                throws IOException, InvalidParameterValueException {
    257
    258            LOG.logInfo( "reading coverage from shapes" );
    259
    260            Shape shape = ( (ShapeResolution) resolutions[0] ).getShape();
    261
    262            GridCoverageExchange gce = new GridCoverageExchange( null );
    263            Format format = new Format( coverageOffering.getSupportedFormats().getNativeFormat() );
    264            return gce.getReader( shape, coverageOffering, env, format );
    265
    266        }
    267
    268    }