Examples of org.geotools.coverage.grid.io.AbstractGridCoverage2DReader

org.geotools.coverage.grid.io.AbstractGridCoverage2DReader
This class is a first attempt for providing a way to get more informations out of a single 2D raster datasets (x,y). It is worth to remark that for the moment this is thought for 2D rasters not for 3D or 4D rasters (x,y,z,t).
The main drawback I see with the current GeoApi GridCoverageReader interface is that there is no way to get real information about a raster source unless you instantiate a GridCoverage. As an instance it is impossible to know the envelope, the number of overviews, the tile size. This information is needed in order to perform decimation on reading or to use built-in overviews
This really impacts the ability to exploit raster datasets in a desktop environment where caching is crucial. @author Simone Giannecchini, GeoSolutions @since 2.3 @source $URL$


    @Test
    public void testReadIMGCOQ_2005() throws Exception {
        tableName = "SDE.RASTER.IMG_COQ2005_CLIP_BOS";


        final AbstractGridCoverage2DReader reader = getReader();
        assertNotNull("Couldn't obtain a reader for " + tableName, reader);


        final GeneralEnvelope originalEnvelope = reader.getOriginalEnvelope();
        GridEnvelope originalGridRange = reader.getOriginalGridRange();


        final int reqWidth = originalGridRange.getSpan(0) / 2;
        final int reqHeight = originalGridRange.getSpan(1) / 2;


        Envelope reqEnvelope = originalEnvelope;

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    @Test
    public void testIMG_WIND_SPD30M_ADAMS() throws Exception {
        tableName = "SDE.RASTER.IMG_WIND_SPD30M_ADAMS";


        final AbstractGridCoverage2DReader reader = getReader();
        assertNotNull("Couldn't obtain a reader for " + tableName, reader);


        final GeneralEnvelope originalEnvelope = reader.getOriginalEnvelope();
        GridEnvelope originalGridRange = reader.getOriginalGridRange();


        final int reqWidth = originalGridRange.getSpan(0);
        final int reqHeight = originalGridRange.getSpan(1);


        GeneralEnvelope reqEnvelope = originalEnvelope;

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    @Test
    public void testReadNOAA_13006_1() throws Exception {
        tableName = "SDE.RASTER.NOAA_13006_1";


        final AbstractGridCoverage2DReader reader = getReader();
        assertNotNull("Couldn't obtain a reader for " + tableName, reader);


        final GeneralEnvelope originalEnvelope = reader.getOriginalEnvelope();


        final int reqWidth = 100;// 800;// originalGridRange.getSpan(0) / 8;
        final int reqHeight = 75;// 595;// originalGridRange.getSpan(1) / 8;


        GeneralEnvelope reqEnvelope = new GeneralEnvelope(new double[] { 274059, 837434 },

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    }


    @Test
    public void testReadIMGCOQ_2001() throws Exception {
        tableName = "SDE.RASTER.IMG_COQ2001_CLIP_BOS_1";
        final AbstractGridCoverage2DReader reader = getReader();
        assertNotNull("Couldn't obtain a reader for " + tableName, reader);


        final GeneralEnvelope originalEnvelope = reader.getOriginalEnvelope();
        GridEnvelope originalGridRange = reader.getOriginalGridRange();


        final int reqWidth = originalGridRange.getSpan(0) / 4;
        final int reqHeight = originalGridRange.getSpan(1) / 4;


        Envelope reqEnvelope = originalEnvelope;

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                + ";pool.minConnections=2;pool.maxConnections=2";
        // + config.getMinConnections() + ";pool.maxConnections=" + config.getMaxConnections();


        final ArcSDERasterFormat format = new ArcSDERasterFormatFactory().createFormat();


        AbstractGridCoverage2DReader reader = format.getReader(rgbUrl);
        return reader;
    }

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                } else if (layerInfo.getType() == Type.RASTER) {
                    CoverageInfo coverageInfo = mli.getCoverage();


                    // it much safer to wrap a reader rather than a coverage in most cases, OOM can
                    // occur otherwise
                    final AbstractGridCoverage2DReader reader;
                    reader = (AbstractGridCoverage2DReader) coverageInfo.getGridCoverageReader(
                            new NullProgressListener(), GeoTools.getDefaultHints());
                    final SimpleFeatureCollection feature;
                    feature = FeatureUtilities.wrapGridCoverageReader(reader, null);
                    request.setLayer(feature.getSchema());

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            CoverageStoreInfo csinfo = ci.getStore();
            
            if(csinfo == null)
                throw new WcsException("Unable to acquire coverage store resource for coverage: " + ci.getName());
            
            AbstractGridCoverage2DReader reader = null;
            try {
                reader = (AbstractGridCoverage2DReader) ci.getGridCoverageReader(null, GeoTools.getDefaultHints());
            } catch (IOException e) {
                LOGGER.severe("Unable to acquire a reader for this coverage with format: " + csinfo.getFormat().getName());
            }
            
            if(reader == null)
                throw new WcsException("Unable to acquire a reader for this coverage with format: " + csinfo.getFormat().getName());


            final String[] metadataNames = reader.getMetadataNames();
            


            String timeMetadata = null;
            if (metadataNames != null && metadataNames.length > 0) {
                // TIME DIMENSION
                timeMetadata = reader.getMetadataValue("TIME_DOMAIN");
                                
            }


            if (referencedEnvelope != null) {
                AttributesImpl attributes = new AttributesImpl();

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            CoverageStoreInfo csinfo = ci.getStore();
            
            if(csinfo == null)
                throw new WcsException("Unable to acquire coverage store resource for coverage: " + ci.getName());
            
            AbstractGridCoverage2DReader reader = null;
            try {
                reader = (AbstractGridCoverage2DReader) ci.getGridCoverageReader(null, GeoTools.getDefaultHints());
            } catch (IOException e) {
                LOGGER.severe("Unable to acquire a reader for this coverage with format: " + csinfo.getFormat().getName());
            }
            
            if(reader == null)
                throw new WcsException("Unable to acquire a reader for this coverage with format: " + csinfo.getFormat().getName());


            final String[] metadataNames = reader.getMetadataNames();
            
            if (metadataNames != null && metadataNames.length > 0) {
                // TIME DIMENSION
                timeMetadata = reader.getMetadataValue("TIME_DOMAIN");
                
                
            }


            start("wcs:domainSet");

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            // 
            // ELEVATION
            //
            // now get possible elevation
            AbstractGridCoverage2DReader reader = null;
            try {
                reader = (AbstractGridCoverage2DReader) ci.getGridCoverageReader(null, GeoTools.getDefaultHints());
            } catch (IOException e) {
                LOGGER.severe("Unable to acquire a reader for this coverage with format: " + ci.getStore().getFormat().getName());
            }            
            if(reader == null)
                throw new WcsException("Unable to acquire a reader for this coverage with format: " + ci.getStore().getFormat().getName());


            final String[] metadataNames = reader.getMetadataNames();
            String elevationMetadata=null;
            if (metadataNames != null && metadataNames.length > 0) {
                // TIME DIMENSION
                elevationMetadata = reader.getMetadataValue("ELEVATION_DOMAIN"); 
                
                start("wcs:AxisDescription");
                element("wcs:name", "ELEVATION");
                element("wcs:label", "ELEVATION");
                start("wcs:values");

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                CoverageStoreInfo csinfo = cv.getStore();
                
                if(csinfo == null)
                    throw new WcsException("Unable to acquire coverage store resource for coverage: " + cv.getName());
                
                AbstractGridCoverage2DReader reader = null;
                try {
                    reader = (AbstractGridCoverage2DReader) catalog.getResourcePool().getGridCoverageReader(csinfo, GeoTools.getDefaultHints());
                } catch (IOException e) {
                    LOGGER.severe("Unable to acquire a reader for this coverage with format: " + csinfo.getFormat().getName());
                }
                
                if(reader == null)
                    throw new WcsException("Unable to acquire a reader for this coverage with format: " + csinfo.getFormat().getName());


                final String[] metadataNames = reader.getMetadataNames();
                
                if (metadataNames != null && metadataNames.length > 0) {
                    // TIME DIMENSION
                    timeMetadata = reader.getMetadataValue("TIME_DOMAIN");
                    
                }


                handleEnvelope(cv.getLatLonBoundingBox(), timeMetadata);
                handleKeywords(cv.getKeywords());

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