/*
* 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.
*
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* any fee or cost, to use, copy, modify, alter, enhance and distribute
* this software, and any derivative works thereof, and its supporting
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package thredds.wcs.v1_0_0_1;
import ucar.nc2.dt.GridCoordSystem;
import ucar.unidata.geoloc.LatLonRect;
import ucar.unidata.geoloc.LatLonPoint;
import org.jdom.Element;
import org.jdom.Namespace;
import thredds.wcs.Request;
/**
* Represent the incoming WCS 1.0.0 request.
*
* @author edavis
* @since 4.0
*/
public abstract class WcsRequest
{
protected static final Namespace wcsNS = Namespace.getNamespace( "http://www.opengis.net/wcs" );
protected static final Namespace gmlNS = Namespace.getNamespace( "gml", "http://www.opengis.net/gml" );
protected static final Namespace xlinkNS = Namespace.getNamespace( "xlink", "http://www.w3.org/1999/xlink" );
// General request info
private Request.Operation operation;
private String version;
// Dataset
private WcsDataset dataset;
WcsRequest( Request.Operation operation, String version, WcsDataset dataset )
{
this.operation = operation;
this.version = version;
this.dataset = dataset;
if ( operation == null )
throw new IllegalArgumentException( "Non-null operation required." );
if ( this.dataset == null )
throw new IllegalArgumentException( "Non-null dataset required." );
}
public Request.Operation getOperation() { return operation; }
public String getVersion() { return version; }
public WcsDataset getDataset() { return dataset; }
protected Element genCoverageOfferingBriefElem( String elemName,
String covName, String covLabel, String covDescription,
GridCoordSystem gridCoordSys )
{
// <CoverageOfferingBrief>
Element briefElem = new Element( elemName, wcsNS );
// <CoverageOfferingBrief>/gml:metaDataProperty [0..*]
// <CoverageOfferingBrief>/gml:description [0..1]
// <CoverageOfferingBrief>/gml:name [0..*]
// <CoverageOfferingBrief>/metadataLink [0..*]
// <CoverageOfferingBrief>/description [0..1]
// <CoverageOfferingBrief>/name [1]
// <CoverageOfferingBrief>/label [1]
if ( covDescription != null && ! covDescription.equals( ""))
briefElem.addContent( new Element( "description", wcsNS ).addContent( covDescription ) );
briefElem.addContent( new Element( "name", wcsNS ).addContent( covName ) );
briefElem.addContent( new Element( "label", wcsNS ).addContent( covLabel ) );
// <CoverageOfferingBrief>/lonLatEnvelope [1]
briefElem.addContent( genLonLatEnvelope( gridCoordSys ) );
// ToDo Add keywords capabilities.
// <CoverageOfferingBrief>/keywords [0..*] /keywords [1..*] and /type [0..1]
return briefElem;
}
protected Element genLonLatEnvelope( GridCoordSystem gcs )
{
// <CoverageOfferingBrief>/lonLatEnvelope
Element lonLatEnvelopeElem = new Element( "lonLatEnvelope", wcsNS );
lonLatEnvelopeElem.setAttribute( "srsName", "urn:ogc:def:crs:OGC:1.3:CRS84" );
LatLonRect llbb = gcs.getLatLonBoundingBox();
LatLonPoint llpt = llbb.getLowerLeftPoint();
LatLonPoint urpt = llbb.getUpperRightPoint();
// <CoverageOfferingBrief>/lonLatEnvelope/gml:pos
String firstPosition = llpt.getLongitude() + " " + llpt.getLatitude();
double lon = llpt.getLongitude() + llbb.getWidth();
String secondPosition = lon + " " + urpt.getLatitude();
// ToDo WCS 1.0Plus - Add vertical (Deal with conversion to meters. Yikes!!)
// CoordinateAxis1D vertAxis = gcs.getVerticalAxis();
// if ( vertAxis != null )
// {
// // See verAxis.getUnitsString()
// firstPosition += " " + vertAxis.getCoordValue( 0);
// secondPostion += " " + vertAxis.getCoordValue( ((int)vertAxis.getSize()) - 1);
// }
lonLatEnvelopeElem.addContent(
new Element( "pos", gmlNS ).addContent( firstPosition ) );
lonLatEnvelopeElem.addContent(
new Element( "pos", gmlNS ).addContent( secondPosition ) );
// <CoverageOfferingBrief>/lonLatEnvelope/gml:timePostion [2]
if ( gcs.hasTimeAxis() )
{
lonLatEnvelopeElem.addContent(
new Element( "timePosition", gmlNS).addContent(
gcs.getDateRange().getStart().toDateTimeStringISO()) );
lonLatEnvelopeElem.addContent(
new Element( "timePosition", gmlNS).addContent(
gcs.getDateRange().getEnd().toDateTimeStringISO()) );
}
return lonLatEnvelopeElem;
}
}