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Expose PAM dataset and raster attribute table from internal represent…
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...l/gdalvrt/src/test/java/it/geosolutions/imageio/plugins/vrt/RasterAttributeTableTest.java
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| /* | ||
| * ImageI/O-Ext - OpenSource Java Image translation Library | ||
| * http://www.geo-solutions.it/ | ||
| * https://github.com/geosolutions-it/imageio-ext | ||
| * (C) 2023, GeoSolutions | ||
| * | ||
| * This library is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU Lesser General Public | ||
| * License as published by the Free Software Foundation; | ||
| * either version 3 of the License, or (at your option) any later version. | ||
| * | ||
| * This library is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| * Lesser General Public License for more details. | ||
| */ | ||
| package it.geosolutions.imageio.plugins.vrt; | ||
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| import it.geosolutions.imageio.gdalframework.AbstractGDALTest; | ||
| import it.geosolutions.imageio.gdalframework.GDALCommonIIOImageMetadata; | ||
| import it.geosolutions.imageio.gdalframework.Viewer; | ||
| import it.geosolutions.imageio.pam.PAMDataset; | ||
| import it.geosolutions.imageio.utilities.ImageIOUtilities; | ||
| import it.geosolutions.resources.TestData; | ||
| import org.junit.Assert; | ||
| import org.junit.Test; | ||
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| import javax.imageio.ImageIO; | ||
| import javax.imageio.ImageReadParam; | ||
| import javax.imageio.ImageReader; | ||
| import javax.imageio.metadata.IIOMetadata; | ||
| import javax.media.jai.JAI; | ||
| import javax.media.jai.ParameterBlockJAI; | ||
| import javax.media.jai.RenderedOp; | ||
| import java.awt.Rectangle; | ||
| import java.awt.image.RenderedImage; | ||
| import java.io.File; | ||
| import java.io.FileNotFoundException; | ||
| import java.io.IOException; | ||
| import java.util.Iterator; | ||
| import java.util.List; | ||
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| import static org.junit.Assert.assertEquals; | ||
| import static org.junit.Assert.assertNotNull; | ||
| import static org.junit.Assert.assertTrue; | ||
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| /** | ||
| * Test reading RasterAttributeTable embedded inside VRT file | ||
| */ | ||
| public class RasterAttributeTableTest extends AbstractGDALTest { | ||
| public RasterAttributeTableTest() { | ||
| super(); | ||
| } | ||
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| @Test | ||
| public void readImageIO() throws FileNotFoundException, IOException { | ||
| if (!isGDALAvailable) { | ||
| return; | ||
| } | ||
| final File file = TestData.file(this, "095b_dem_90m.asc.vrt"); | ||
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| final Iterator<ImageReader> it = ImageIO.getImageReaders(file); | ||
| assertTrue(it.hasNext()); | ||
| final ImageReader reader = (ImageReader) it.next(); | ||
| assertTrue(reader instanceof VRTImageReader); | ||
| reader.setInput(file); | ||
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| IIOMetadata genericMeta = reader.getImageMetadata(0); | ||
| assertTrue(genericMeta instanceof GDALCommonIIOImageMetadata); | ||
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| GDALCommonIIOImageMetadata gdalMeta = (GDALCommonIIOImageMetadata) genericMeta; | ||
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| PAMDataset pam = gdalMeta.getPamDataset(); | ||
| assertNotNull(pam); | ||
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| PAMDataset.PAMRasterBand band = pam.getPAMRasterBand().get(0); | ||
| PAMDataset.PAMRasterBand.GDALRasterAttributeTable rat = band.getGdalRasterAttributeTable(); | ||
| assertNotNull(rat); | ||
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| // Check each field | ||
| List<PAMDataset.PAMRasterBand.FieldDefn> fields = rat.getFieldDefn(); | ||
| assertEquals(3, fields.size()); | ||
| assertField(fields.get(0), "con_min", PAMDataset.PAMRasterBand.FieldType.Real, | ||
| PAMDataset.PAMRasterBand.FieldUsage.Min); | ||
| assertField(fields.get(1), "con_max", PAMDataset.PAMRasterBand.FieldType.Real, | ||
| PAMDataset.PAMRasterBand.FieldUsage.Max); | ||
| assertField(fields.get(2), "test", PAMDataset.PAMRasterBand.FieldType.String, | ||
| PAMDataset.PAMRasterBand.FieldUsage.Generic); | ||
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| // Check rows | ||
| List<PAMDataset.PAMRasterBand.Row> rows = rat.getRow(); | ||
| assertEquals(8, rows.size()); | ||
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| // one sample row | ||
| PAMDataset.PAMRasterBand.Row row = rows.get(1); | ||
| List<String> fieldValues = row.getF(); | ||
| assertEquals("1.4", fieldValues.get(0)); | ||
| assertEquals("1.6", fieldValues.get(1)); | ||
| assertEquals("white", fieldValues.get(2)); | ||
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| reader.dispose(); | ||
| } | ||
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| private void assertField(PAMDataset.PAMRasterBand.FieldDefn fieldDefn, String name, | ||
| PAMDataset.PAMRasterBand.FieldType type, | ||
| PAMDataset.PAMRasterBand.FieldUsage usage) { | ||
| assertEquals(name, fieldDefn.getName()); | ||
| assertEquals(type, fieldDefn.getType()); | ||
| assertEquals(usage, fieldDefn.getUsage()); | ||
| } | ||
| } | ||
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