/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2006 by:
EXSE, Department of Geography, University of Bonn
http://www.giub.uni-bonn.de/deegree/
lat/lon GmbH
http://www.lat-lon.de
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; either
version 2.1 of the License, or (at your option) any later version.
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.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact:
Andreas Poth
lat/lon GmbH
Aennchenstr. 19
53115 Bonn
Germany
E-Mail: poth@lat-lon.de
Prof. Dr. Klaus Greve
Department of Geography
University of Bonn
Meckenheimer Allee 166
53115 Bonn
Germany
E-Mail: greve@giub.uni-bonn.de
---------------------------------------------------------------------------*/
package org.deegree.model.coverage.grid;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URL;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import org.deegree.framework.log.ILogger;
import org.deegree.framework.log.LoggerFactory;
import org.deegree.framework.xml.NamespaceContext;
import org.deegree.framework.xml.XMLFragment;
import org.deegree.framework.xml.XMLParsingException;
import org.deegree.framework.xml.XMLTools;
import org.deegree.ogcbase.CommonNamespaces;
import org.opengis.coverage.grid.Format;
import org.opengis.coverage.grid.GridCoverage;
import org.opengis.parameter.GeneralParameterValue;
import org.opengis.parameter.InvalidParameterNameException;
import org.opengis.parameter.InvalidParameterValueException;
import org.opengis.parameter.OperationParameter;
import org.opengis.parameter.ParameterNotFoundException;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
/**
* Implementation of @see org.opengis.coverage.grid.GridCoverageWriter for
* writing a GridCoverage as GML document to a defined destioation
*
* @version $Revision: 1.11 $
* @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
* @author last edited by: $Author: poth $
*
* @version 1.0. $Revision: 1.11 $, $Date: 2006/07/05 12:58:09 $
*
* @since 2.0
*/
public class GMLGridCoverageWriter extends AbstractGridCoverageWriter {
private static ILogger LOG = LoggerFactory.getLogger( GMLGridCoverageWriter.class );
private URL template =
GMLGridCoverageWriter.class.getResource( "gml_rectifiedgrid_template.xml" );
/**
*
* @param destination
* @param metadata
* @param subNames
* @param currentSubname
* @param format
*/
public GMLGridCoverageWriter(Object destination, Map metadata, String[] subNames,
String currentSubname, Format format) {
super(destination, metadata, subNames, currentSubname, format);
}
/**
* disposes all resources assigned to a GMLGridCoverageWriter instance.
* For most cases this will be IO-resources
*/
public void dispose() throws IOException {
}
/**
* @param coverage
* @param parameters must contain the servlet URL within the first field;
* all other fields must contain the required parameters
* for a valid GetCoverage request
*/
public void write(GridCoverage coverage, GeneralParameterValue[] parameters)
throws InvalidParameterNameException,
InvalidParameterValueException,
ParameterNotFoundException, IOException {
XMLFragment xml = new XMLFragment();
try {
xml.load( template );
Element root = xml.getRootElement();
NamespaceContext nsc = CommonNamespaces.getNamespaceContext();
String xpath = "gml:rectifiedGridDomain/gml:RectifiedGrid/gml:limits/gml:GridEnvelope/gml:low";
Element element = (Element)XMLTools.getNode( root, xpath, nsc );
double x = coverage.getEnvelope().minCP.ord[0];
double y = coverage.getEnvelope().minCP.ord[1];
Node node = root.getOwnerDocument().createTextNode( Double.toString( x ) + ' ' +
Double.toString( y ) );
element.appendChild( node );
xpath = "gml:rectifiedGridDomain/gml:RectifiedGrid/gml:limits/gml:GridEnvelope/gml:high";
element = (Element)XMLTools.getNode( root, xpath, nsc );
x = coverage.getEnvelope().maxCP.ord[0];
y = coverage.getEnvelope().maxCP.ord[1];
node = root.getOwnerDocument().createTextNode( Double.toString( x ) + ' ' +
Double.toString( y ) );
element.appendChild( node );
xpath = "gml:rectifiedGridDomain/gml:RectifiedGrid/gml:origin/gml:Point";
element = (Element)XMLTools.getNode( root, xpath, nsc );
element.setAttribute( "srsName", coverage.getCoordinateReferenceSystem().getName() );
xpath = "gml:rectifiedGridDomain/gml:RectifiedGrid/gml:origin/gml:Point/gml:pos";
element = (Element)XMLTools.getNode( root, xpath, nsc );
x = coverage.getEnvelope().minCP.ord[0];
y = coverage.getEnvelope().minCP.ord[1];
node = root.getOwnerDocument().createTextNode( Double.toString( x ) + ' ' +
Double.toString( y ) );
element.appendChild( node );
double[] res = calcGridResolution( coverage, parameters );
xpath = "gml:rectifiedGridDomain/gml:RectifiedGrid/gml:offsetVector";
List list = XMLTools.getNodes( root, xpath, nsc );
for (int i = 0; i < list.size(); i++) {
element = (Element)list.get( i );
element.setAttribute( "srsName", coverage.getCoordinateReferenceSystem().getName() );
if ( i == 0 ) {
node = root.getOwnerDocument().createTextNode( res[i] + " 0" );
element.appendChild( node );
} else if ( i == 1 ) {
node = root.getOwnerDocument().createTextNode( "0 " + res[i] );
element.appendChild( node );
} else if ( i == 2 ) {
node = root.getOwnerDocument().createTextNode( "0 0 " + res[i] );
element.appendChild( node );
}
}
xpath = "gml:rangeSet/gml:File/gml:fileName";
element = (Element)XMLTools.getNode( root, xpath, nsc );
StringBuffer sb = new StringBuffer( 300 );
OperationParameter op = (OperationParameter)parameters[0].getDescriptor();
sb.append( op.getDefaultValue() ).append( '?' );
for (int i = 1; i < parameters.length; i++) {
//OperationParameter
op = (OperationParameter)parameters[i].getDescriptor();
sb.append( op.getName( Locale.getDefault() ) );
sb.append( '=' ).append( op.getDefaultValue() );
if ( i < parameters.length - 1) {
sb.append( '&' );
}
}
node = root.getOwnerDocument().createCDATASection( sb.toString() );
element.appendChild( node );
} catch (XMLParsingException e) {
LOG.logError( "could not parse GMLGridCoverage response template", e );
throw new InvalidParameterValueException( "", e.getMessage(), "" );
} catch (Exception e) {
LOG.logError( "could not write GMLGridCoverage", e );
throw new InvalidParameterValueException( "", e.getMessage(), "" );
}
xml.write( ((OutputStream)destination) );
}
/**
* returns the resolution of the grid in x- and y- directory
* @param coverage
* @param parameters
* @return
*/
private double[] calcGridResolution( GridCoverage coverage, GeneralParameterValue[] parameters ) {
double wx = coverage.getEnvelope().maxCP.ord[0] - coverage.getEnvelope().minCP.ord[0];
double wy = coverage.getEnvelope().maxCP.ord[1] - coverage.getEnvelope().minCP.ord[1];
Integer width = (Integer)getNamedParameter( parameters, "width" ).getDefaultValue();
Integer height = (Integer)getNamedParameter( parameters, "height" ).getDefaultValue();
double dx = wx / width.doubleValue();
double dy = wy / height.doubleValue();
double[] res = new double[] { dx, dy };
return res;
}
/**
* selects the parameter matching the passed name from the passed
* array
* @param parameters
* @param name
* @return
*/
private OperationParameter getNamedParameter(GeneralParameterValue[] parameters, String name) {
for (int i = 0; i < parameters.length; i++) {
//OperationParameter
OperationParameter op = (OperationParameter)parameters[i].getDescriptor();
if ( op.getName( Locale.getDefault() ).equals( name ) ) {
return op;
}
}
return null;
}
/**
*
* @param coverage
* @param xAxis
* @param yAxis
* @param parameters
*/
public void write(GridCoverage coverage, int xAxis, int yAxis,
GeneralParameterValue[] parameters) throws InvalidParameterNameException,
InvalidParameterValueException,
ParameterNotFoundException,
IOException {
}
}
/* ***************************************************************************
* Changes to this class. What the people have been up to:
* $Log: GMLGridCoverageWriter.java,v $
* Revision 1.11 2006/07/05 12:58:09 poth
* bug fix - creating offSetVectors for rectified grid corrected
*
* Revision 1.10 2006/06/12 08:09:54 poth
* calculation of rectified grid completed
*
*************************************************************************** */