/**
* Precondition: parser cursor positioned on a geometry property (ej, {@code gml:Point}, etc)
*
* <p>Postcondition: parser gets positioned at the end tag of the element it started parsing the
* geometry at
*
* @return
* @throws FactoryException
* @throws NoSuchAuthorityCodeException
* @throws IOException
* @throws XmlPullParserException
*/
private Geometry parseGeom()
throws NoSuchAuthorityCodeException, FactoryException, XmlPullParserException, IOException {
final QName startingGeometryTagName = new QName(parser.getNamespace(), parser.getName());
int dimension = crsDimension(2);
CoordinateReferenceSystem crs = crs(DefaultGeographicCRS.WGS84);
Geometry geom;
if (GML.Point.equals(startingGeometryTagName)) {
geom = parsePoint(dimension, crs);
} else if (GML.LineString.equals(startingGeometryTagName)) {
geom = parseLineString(dimension, crs);
} else if (GML.Polygon.equals(startingGeometryTagName)) {
geom = parsePolygon(dimension, crs);
} else if (GML.MultiPoint.equals(startingGeometryTagName)) {
geom = parseMultiPoint(dimension, crs);
} else if (GML.MultiLineString.equals(startingGeometryTagName)) {
geom = parseMultiLineString(dimension, crs);
} else if (GML.MultiSurface.equals(startingGeometryTagName)) {
geom = parseMultiSurface(dimension, crs);
} else if (GML.MultiPolygon.equals(startingGeometryTagName)) {
geom = parseMultiPolygon(dimension, crs);
} else {
throw new IllegalStateException("Unrecognized geometry element " + startingGeometryTagName);
}
parser.require(
END_TAG, startingGeometryTagName.getNamespaceURI(), startingGeometryTagName.getLocalPart());
return geom;
}
/**
* Parses a MultiPoint.
*
* <p>Precondition: parser positioned at a {@link GML#MultiPoint MultiPoint} start tag
*
* <p>Postcondition: parser positioned at the {@link GML#MultiPoint MultiPoint} end tag of the
* starting tag
*
* @throws IOException
* @throws XmlPullParserException
* @throws IOException
* @throws XmlPullParserException
* @throws FactoryException
* @throws NoSuchAuthorityCodeException
* @throws FactoryException
* @throws NoSuchAuthorityCodeException
*/
private Geometry parseMultiPoint(int dimension, CoordinateReferenceSystem crs)
throws XmlPullParserException, IOException, NoSuchAuthorityCodeException, FactoryException {
Geometry geom;
parser.nextTag();
final QName memberTag = new QName(parser.getNamespace(), parser.getName());
List<Point> points = new ArrayList<Point>(4);
if (GML.pointMembers.equals(memberTag)) {
while (true) {
parser.nextTag();
if (END_TAG == parser.getEventType()
&& GML.pointMembers.getLocalPart().equals(parser.getName())) {
// we're done
break;
}
Point p = parsePoint(dimension, crs);
points.add(p);
}
parser.nextTag();
} else if (GML.pointMember.equals(memberTag)) {
while (true) {
parser.nextTag();
parser.require(START_TAG, GML.NAMESPACE, GML.Point.getLocalPart());
Point p = parsePoint(dimension, crs);
points.add(p);
parser.nextTag();
parser.require(END_TAG, GML.NAMESPACE, GML.pointMember.getLocalPart());
parser.nextTag();
if (END_TAG == parser.getEventType()
&& GML.MultiPoint.getLocalPart().equals(parser.getName())) {
// we're done
break;
}
}
}
parser.require(END_TAG, GML.NAMESPACE, GML.MultiPoint.getLocalPart());
geom = geomFac.createMultiPoint(points.toArray(new Point[points.size()]));
return geom;
}
