/**
* 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;
}
}