/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2002-2010, Open Source Geospatial Foundation (OSGeo)
*
* 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;
* version 2.1 of the License.
*
* 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 org.geotools.gce.grassraster.format;
import java.io.File;
import java.net.URL;
import java.util.HashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.geotools.coverage.grid.io.AbstractGridFormat;
import org.geotools.coverage.grid.io.imageio.GeoToolsWriteParams;
import org.geotools.data.DataUtilities;
import org.geotools.factory.Hints;
import org.geotools.gce.grassraster.GrassCoverageReader;
import org.geotools.gce.grassraster.GrassCoverageWriter;
import org.geotools.gce.grassraster.JGrassUtilities;
import org.geotools.parameter.DefaultParameterDescriptorGroup;
import org.geotools.parameter.ParameterGroup;
import org.opengis.coverage.grid.Format;
import org.opengis.coverage.grid.GridCoverageWriter;
import org.opengis.parameter.GeneralParameterDescriptor;
/**
* Provides basic information about the grass raster format IO.
*
* @author Andrea Antonello (www.hydrologis.com)
*
*
* @source $URL$
*/
public final class GrassCoverageFormat extends AbstractGridFormat implements Format {
/** Logger. */
private final static Logger LOGGER = org.geotools.util.logging.Logging.getLogger("org.geotools.gce.grassraster");
/**
* Creates an instance and sets the metadata.
*/
public GrassCoverageFormat() {
mInfo = new HashMap<String, String>();
mInfo.put("name", "grass");
mInfo.put("description", "Grass Coverage Format");
mInfo.put("vendor", "Geotools");
// reading parameters
readParameters = new ParameterGroup(new DefaultParameterDescriptorGroup(mInfo,
new GeneralParameterDescriptor[]{READ_GRIDGEOMETRY2D}));
// reading parameters
writeParameters = new ParameterGroup(new DefaultParameterDescriptorGroup(mInfo,
new GeneralParameterDescriptor[]{GEOTOOLS_WRITE_PARAMS}));
}
public GrassCoverageReader getReader( final Object o ) {
return getReader(o, null);
}
public GrassCoverageWriter getWriter( final Object destination, Hints hints ) {
try {
return new GrassCoverageWriter(destination);
} catch (Exception e) {
if (LOGGER.isLoggable(Level.WARNING))
LOGGER.log(Level.WARNING, e.getLocalizedMessage(), e);
return null;
}
}
public GridCoverageWriter getWriter( Object destination ) {
return getWriter(destination, null);
}
public boolean accepts( final Object o, Hints hints ) {
File fileToUse;
if (o instanceof File) {
fileToUse = (File) o;
} else if (o instanceof URL) {
fileToUse = DataUtilities.urlToFile((URL) o);
} else if (o instanceof String) {
fileToUse = new File((String) o);
} else {
return false;
}
if (!fileToUse.exists()) {
return false;
}
if (JGrassUtilities.isGrass(fileToUse.getAbsolutePath())) {
return true;
}
return false;
}
public GrassCoverageReader getReader( final Object o, Hints hints ) {
try {
GrassCoverageReader coverageReader = new GrassCoverageReader(o);
return coverageReader;
} catch (Exception e) {
if (LOGGER.isLoggable(Level.SEVERE))
LOGGER.log(Level.SEVERE, e.getLocalizedMessage(), e);
return null;
}
}
/**
* Always returns null since for the moment there are no
* {@link GeoToolsWriteParams} availaible for this format.
*
* @return always null.
*/
public GeoToolsWriteParams getDefaultImageIOWriteParameters() {
return null;
}
}