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The NetCDF-Java Library is a Java interface to NetCDF files,
as well as to many other types of scientific data formats.
/*
* Copyright 1998-2009 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
* Access and use of this software shall impose the following obligations
* and understandings on the user. The user is granted the right, without
* any fee or cost, to use, copy, modify, alter, enhance and distribute
* this software, and any derivative works thereof, and its supporting
* documentation for any purpose whatsoever, provided that this entire
* notice appears in all copies of the software, derivative works and
* supporting documentation. Further, UCAR requests that the user credit
* UCAR/Unidata in any publications that result from the use of this
* software or in any product that includes this software. The names UCAR
* and/or Unidata, however, may not be used in any advertising or publicity
* to endorse or promote any products or commercial entity unless specific
* written permission is obtained from UCAR/Unidata. The user also
* understands that UCAR/Unidata is not obligated to provide the user with
* any support, consulting, training or assistance of any kind with regard
* to the use, operation and performance of this software nor to provide
* the user with any updates, revisions, new versions or "bug fixes."
*
* THIS SOFTWARE IS PROVIDED BY UCAR/UNIDATA "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL UCAR/UNIDATA BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package thredds.wcs.v1_1_0;
import org.jdom.Namespace;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.output.XMLOutputter;
import org.jdom.output.Format;
import java.net.URI;
import java.util.Collections;
import java.io.PrintWriter;
import java.io.IOException;
import java.io.File;
import ucar.nc2.dt.GridDataset;
import ucar.nc2.dt.grid.NetcdfCFWriter;
import ucar.nc2.util.DiskCache2;
import ucar.ma2.InvalidRangeException;
/**
* _more_
*
* @author edavis
* @since 4.0
*/
public class GetCoverage
{
private static org.slf4j.Logger log =
org.slf4j.LoggerFactory.getLogger( GetCoverage.class );
protected static final Namespace owcsNS = Namespace.getNamespace( "http://www.opengis.net/wcs/1.1/ows" );
protected static final Namespace owsNS = Namespace.getNamespace( "ows", "http://www.opengis.net/ows" );
protected static final Namespace xlinkNS = Namespace.getNamespace( "xlink", "http://www.w3.org/1999/xlink" );
private URI serverURI;
private String identifier;
private String version = "1.1.0";
private String datasetPath;
private GridDataset dataset;
private Document getCoverageDoc;
public GetCoverage( URI serverURI, String identifier,
String datasetPath, GridDataset dataset )
{
this.serverURI = serverURI;
this.identifier = identifier;
this.datasetPath = datasetPath;
this.dataset = dataset;
if ( this.serverURI == null )
throw new IllegalArgumentException( "Non-null server URI required." );
if ( this.identifier == null )
throw new IllegalArgumentException( "Non-null coverage identifier required." );
if ( this.datasetPath == null )
throw new IllegalArgumentException( "Non-null dataset path required." );
if ( this.dataset == null )
throw new IllegalArgumentException( "Non-null dataset required." );
}
private boolean dataOnlyRequest = true;
public boolean isDataOnlyRequest() { return dataOnlyRequest; }
//public NetcdfFile getCoverageData() {}
static private DiskCache2 diskCache = null;
static public void setDiskCache( DiskCache2 _diskCache )
{
diskCache = _diskCache;
}
static private DiskCache2 getDiskCache()
{
if ( diskCache == null )
{
log.error( "getDiskCache(): Disk cache has not been set.");
throw new IllegalStateException( "Disk cache must be set before calling GetCoverage.getDiskCache().");
//diskCache = new DiskCache2( "/wcsCache/", true, -1, -1 );
}
return diskCache;
}
public File writeCoverageDataToFile()
throws WcsException
{
try
{
File dir = new File( getDiskCache().getRootDirectory() );
File ncFile = File.createTempFile( "WCS", ".nc", dir );
NetcdfCFWriter writer = new NetcdfCFWriter();
writer.makeFile( ncFile.getPath(), dataset,
Collections.singletonList( identifier ), null, null,
// Collections.singletonList( req.getCoverage() ),
// req.getBoundingBox(), dateRange,
true, 1, 1, 1 );
return ncFile;
}
catch ( InvalidRangeException e )
{
log.error( "writeCoverageDataToFile(): Failed to subset coverage <" + identifier + ">: " + e.getMessage());
throw new WcsException( WcsException.Code.UnsupportedCombination, "", "Failed to subset coverage <" + identifier + ">.");
}
catch ( IOException e )
{
log.error( "writeCoverageDataToFile(): Failed to write file for requested coverage <" + identifier + ">: " + e.getMessage());
throw new WcsException( WcsException.Code.NoApplicableCode, "", "Problem creating coverage <" + identifier + ">." );
}
}
public Document getGetCoverageDoc()
{
if ( this.getCoverageDoc == null )
getCoverageDoc = generateGetCoverageDoc();
return getCoverageDoc;
}
public void writeGetCoverageDoc( PrintWriter pw )
throws IOException
{
XMLOutputter xmlOutputter = new XMLOutputter( Format.getPrettyFormat() );
xmlOutputter.output( getGetCoverageDoc(), pw );
}
public Document generateGetCoverageDoc()
{
// Coverages (owcs) [1]
Element coveragesElem = new Element( "Coverages", owcsNS );
coveragesElem.addNamespaceDeclaration( owsNS );
coveragesElem.addNamespaceDeclaration( xlinkNS );
coveragesElem.addContent( genCoverage( this.identifier ) );
return new Document( coveragesElem );
}
public Element genCoverage( String covId )
{
// Coverages/Coverage (owcs) [1..*]
Element covDescripElem = new Element( "Coverage", owcsNS );
// CoverageDescriptions/CoverageDescription/Abstract (ows) [0..1]
// CoverageDescriptions/CoverageDescription/Keywords (ows) [0..*]
// CoverageDescriptions/CoverageDescription/Keywords/Keyword (ows) [0..*]
// CoverageDescriptions/CoverageDescription/Identifier (wcs) [1]
//covDescripElem.addContent( new Element( "Identifier", wcsNS ).addContent( covId ) );
// CoverageDescriptions/CoverageDescription/Metadata (ows) [0..*]
// CoverageDescriptions/CoverageDescription/Domain (wcs) [1]
// CoverageDescriptions/CoverageDescription/Range (wcs) [1]
// CoverageDescriptions/CoverageDescription/SupportedCRS (wcs) [1..*] - URI
// CoverageDescriptions/CoverageDescription/SupportedFormat (wcs) [1..*] - MIME Type (e.g., "application/x-netcdf")
return covDescripElem;
}
}