/* (c) 2014 Open Source Geospatial Foundation - all rights reserved
* (c) 2001 - 2013 OpenPlans
* This code is licensed under the GPL 2.0 license, available at the root
* application directory.
*/
package org.geoserver.wcs2_0.kvp;
import net.opengis.wcs20.InterpolationAxesType;
import net.opengis.wcs20.InterpolationAxisType;
import net.opengis.wcs20.InterpolationMethodType;
import net.opengis.wcs20.InterpolationType;
import net.opengis.wcs20.Wcs20Factory;
import org.geoserver.ows.KvpParser;
import org.geoserver.wcs2_0.exception.WCS20Exception;
/**
* KVP parser for the WCS 2.0 {@link InterpolationType}
*
* @author Andrea Aime - GeoSolutions
*/
public class InterpolationKvpParser extends KvpParser {
public InterpolationKvpParser() {
super("interpolation", InterpolationType.class);
}
@Override
public Object parse(String value) throws Exception {
InterpolationType result = Wcs20Factory.eINSTANCE.createInterpolationType();
// remove space
value = value.trim();
// single value?
if (value.matches("http://www.opengis.net/def/interpolation/OGC/1/[^,:]*")) {
// single value then
InterpolationMethodType method = Wcs20Factory.eINSTANCE.createInterpolationMethodType();
method.setInterpolationMethod(value);
result.setInterpolationMethod(method);
return result;
}
// minimal validation of the multi-axis case
if (value.matches(".*,\\s*,.*")) {
// two consequent commas
throwInvalidSyntaxException();
} else if (value.startsWith(",") || value.endsWith(",")) {
throwInvalidSyntaxException();
}
InterpolationAxesType axes = Wcs20Factory.eINSTANCE.createInterpolationAxesType();
result.setInterpolationAxes(axes);
String[] components = value.split("\\s*,\\s*");
for (String component : components) {
// minimal validation of the content
if (!component.matches("http://www.opengis.net/def/axis/OGC/1/.*:http://www.opengis.net/def/interpolation/OGC/1/.*")) {
// not a regular axis:interpolation structure
throwInvalidSyntaxException();
} else if (component.matches(".*:\\s*:.*")) {
// two consequent columns
throwInvalidSyntaxException();
}
int idx = component.indexOf(":", "http://www.opengis.net/def/axis/OGC/1/".length());
InterpolationAxisType ia = Wcs20Factory.eINSTANCE.createInterpolationAxisType();
ia.setAxis(component.substring(0, idx));
ia.setInterpolationMethod(component.substring(idx + 1));
axes.getInterpolationAxis().add(ia);
}
return result;
}
protected void throwInvalidSyntaxException() {
throw new WCS20Exception(
"Invalid Interpolation syntax, expecting either a single interpolation value, "
+ "or a comma separated list of axis:interpolation specs",
WCS20Exception.WCS20ExceptionCode.InvalidEncodingSyntax, "interpolation");
}
}