/** * Copyright (C) 2007 - 2016 52°North Initiative for Geospatial Open Source * Software GmbH * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published * by the Free Software Foundation. * * If the program is linked with libraries which are licensed under one of * the following licenses, the combination of the program with the linked * library is not considered a "derivative work" of the program: * * • Apache License, version 2.0 * • Apache Software License, version 1.0 * • GNU Lesser General Public License, version 3 * • Mozilla Public License, versions 1.0, 1.1 and 2.0 * • Common Development and Distribution License (CDDL), version 1.0 * * Therefore the distribution of the program linked with libraries licensed * under the aforementioned licenses, is permitted by the copyright holders * if the distribution is compliant with both the GNU General Public * License version 2 and the aforementioned licenses. * * As an exception to the terms of the GPL, you may copy, modify, * propagate, and distribute a work formed by combining 52°North WPS * GeoTools Modules with the Eclipse Libraries, or a work derivative of * such a combination, even if such copying, modification, propagation, or * distribution would otherwise violate the terms of the GPL. Nothing in * this exception exempts you from complying with the GPL in all respects * for all of the code used other than the Eclipse Libraries. You may * include this exception and its grant of permissions when you distribute * 52°North WPS GeoTools Modules. Inclusion of this notice with such a * distribution constitutes a grant of such permissions. If you do not wish * to grant these permissions, remove this paragraph from your * distribution. "52°North WPS GeoTools Modules" means the 52°North WPS * modules using GeoTools functionality - software licensed under version 2 * or any later version of the GPL, or a work based on such software and * licensed under the GPL. "Eclipse Libraries" means Eclipse Modeling * Framework Project and XML Schema Definition software distributed by the * Eclipse Foundation and licensed under the Eclipse Public License Version * 1.0 ("EPL"), or a work based on such software and licensed under the EPL. * * This program 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 General * Public License for more details. */ package org.n52.wps.io.datahandler.generator; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.util.UUID; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.geotools.coverage.grid.GridCoverage2D; import org.geotools.data.DataSourceException; import org.geotools.gce.arcgrid.ArcGridWriter; import org.n52.wps.io.data.IData; import org.n52.wps.io.data.binding.complex.GTRasterDataBinding; import org.opengis.coverage.grid.GridCoverageWriter; import org.opengis.parameter.GeneralParameterValue; import org.opengis.parameter.ParameterValueGroup; public class AsciiGrassGenerator extends AbstractGenerator { private static Logger LOGGER = LoggerFactory.getLogger(AsciiGrassGenerator.class); public AsciiGrassGenerator() { super(); this.supportedIDataTypes.add(GTRasterDataBinding.class); } public InputStream generateStream(IData data, String mimeType, String schema) throws IOException { // // check for correct request before returning the stream // if (!(this.isSupportedGenerate(data.getSupportedClass(), mimeType, schema))){ // throw new IOException("I don't support the incoming datatype"); // } InputStream stream = null; GridCoverage2D grid = ((GTRasterDataBinding) data).getPayload(); String fileName = "temp" + UUID.randomUUID(); File outputFile = File.createTempFile(fileName, ".tmp"); outputFile.deleteOnExit(); this.finalizeFiles.add(outputFile); // mark file for final delete GridCoverageWriter writer; try { writer = new ArcGridWriter(outputFile); // setting write parameters ParameterValueGroup params = writer.getFormat().getWriteParameters(); params.parameter("GRASS").setValue(true); GeneralParameterValue[] gpv = { params.parameter("GRASS") }; writer.write(grid, gpv); writer.dispose(); stream = new FileInputStream(outputFile); } catch (DataSourceException e) { LOGGER.error(e.getMessage()); throw new IOException("AsciiGRID cannot be read from source"); } catch (IllegalArgumentException e) { LOGGER.error(e.getMessage()); throw new IOException("Illegal configuration of AsciiGRID writer"); } catch (IOException e) { LOGGER.error(e.getMessage()); throw new IOException("AsciiGrassGenerator could not create output due to an IO error"); } return stream; } }