org.integratedmodelling.engine.geospace.datasources.RasterFileDataSource Maven / Gradle / Ivy
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/*******************************************************************************
* Copyright (C) 2007, 2015:
*
* - Ferdinando Villa
* - integratedmodelling.org
* - any other authors listed in @author annotations
*
* All rights reserved. This file is part of the k.LAB software suite,
* meant to enable modular, collaborative, integrated
* development of interoperable data and model components. For
* details, see http://integratedmodelling.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the Affero General Public License
* Version 3 or any later version.
*
* 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
* Affero General Public License for more details.
*
* You should have received a copy of the Affero General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* The license is also available at: https://www.gnu.org/licenses/agpl.html
*******************************************************************************/
package org.integratedmodelling.engine.geospace.datasources;
import java.io.File;
import org.geotools.coverage.grid.io.AbstractGridCoverage2DReader;
import org.geotools.coverage.grid.io.AbstractGridFormat;
import org.geotools.coverage.grid.io.GridFormatFinder;
import org.integratedmodelling.api.metadata.IMetadata;
import org.integratedmodelling.common.metadata.Metadata;
import org.integratedmodelling.common.utils.MiscUtilities;
import org.integratedmodelling.engine.geospace.coverage.ICoverage;
import org.integratedmodelling.engine.geospace.coverage.raster.AbstractRasterCoverage;
import org.integratedmodelling.engine.geospace.coverage.raster.RasterCoverage;
import org.integratedmodelling.exceptions.KlabException;
import org.integratedmodelling.exceptions.KlabUnsupportedOperationException;
public class RasterFileDataSource extends RegularRasterGridDataSource {
AbstractGridFormat _format = null;
File _file = null;
IMetadata _metadata = new Metadata();
double noData;
public String toString() {
return "raster [" + MiscUtilities.getFileName(_file.toString()) + "]";
}
public RasterFileDataSource(String id, String file, double noData) throws KlabUnsupportedOperationException {
this.id = id;
this.noData = noData;
File f = new File(file);
if (f.exists()) {
_file = f;
try {
_format = GridFormatFinder.findFormat(file);
} catch (Throwable e) {
/*
* stupid SPI throws exceptions when optional formats are not available
* because we haven't bought ARC. Just ignore, and _format will be null if
* any real problem happened.
*/
}
}
if (_format == null) {
throw new KlabUnsupportedOperationException("file " + file
+ " cannot be read or does not have a supported raster format");
}
}
@Override
protected ICoverage readData() throws KlabException {
if (coverage == null) {
AbstractGridCoverage2DReader reader = _format.getReader(_file);
try {
RasterCoverage ret = new RasterCoverage(id, reader.read(null));
((AbstractRasterCoverage)ret).setNodataValue(noData);
return ret;
} catch (Exception e) {
throw new KlabUnsupportedOperationException("file " + _file
+ " cannot be read or does not have a supported raster format");
}
}
return coverage;
}
@Override
public boolean isAvailable() {
return _file.exists() && _file.canRead();
}
}