/// <summary>
/// This method produces instances of type <see cref="Gisoft.GeoAPI.Geometries.IMultiPolygon"/>.
/// </summary>
/// <returns>The created geometries</returns>
internal override Collection <IGeometry> createGeometries()
{
//IMultiPolygon multiPolygon = null;
IPathNode multiPolygonNode = new PathNode(_GMLNS, "MultiPolygon", (NameTable)_XmlReader.NameTable);
IPathNode multiSurfaceNode = new PathNode(_GMLNS, "MultiSurface", (NameTable)_XmlReader.NameTable);
IPathNode multiPolygonNodeAlt = new AlternativePathNodesCollection(multiPolygonNode, multiSurfaceNode);
IPathNode polygonMemberNode = new PathNode(_GMLNS, "polygonMember", (NameTable)_XmlReader.NameTable);
IPathNode surfaceMemberNode = new PathNode(_GMLNS, "surfaceMember", (NameTable)_XmlReader.NameTable);
IPathNode polygonMemberNodeAlt = new AlternativePathNodesCollection(polygonMemberNode, surfaceMemberNode);
IPathNode linearRingNode = new PathNode(_GMLNS, "LinearRing", (NameTable)_XmlReader.NameTable);
var labelValues = new Dictionary <string, string>();
bool geomFound = false;
try
{
// Reading the entire feature's node makes it possible to collect label values that may appear before or after the geometry property
while ((_FeatureReader = GetSubReaderOf(_XmlReader, null, _FeatureNode)) != null)
{
while (
(_GeomReader =
GetSubReaderOf(_FeatureReader, labelValues, multiPolygonNodeAlt)) != null)
{
XmlReader memberReader;
var polygons = new List <IGeometry>();
while ((memberReader = GetSubReaderOf(_GeomReader, labelValues, polygonMemberNodeAlt)) != null)
{
GeometryFactory geomFactory = new PolygonFactory(memberReader, _FeatureTypeInfo)
{
AxisOrder = AxisOrder
};
var polygon = geomFactory.createGeometries()[0]; // polygon element has a maxOccurs=1
polygons.Add(polygon);
geomFound = true;
}
if (geomFound)
{
var polygonArray = new IPolygon[polygons.Count];
var i = 0;
foreach (IPolygon polygon in polygons)
{
polygonArray[i++] = polygon;
}
_Geoms.Add(Factory.CreateMultiPolygon(polygonArray));
}
}
if (geomFound)
{
AddLabel(labelValues, _Geoms[_Geoms.Count - 1]);
}
geomFound = false;
}
}
catch (Exception ex)
{
Trace.TraceError("An exception occured while parsing a multi-polygon geometry: " + ex.Message);
throw ex;
}
return(_Geoms);
}
/// <summary>
/// This method detects the geometry type from 'GetFeature' response and uses a geometry factory to create the
/// appropriate geometries.
/// </summary>
/// <returns></returns>
internal override Collection <IGeometry> createGeometries()
{
GeometryFactory geomFactory = null;
string geometryTypeString = string.Empty;
string serviceException = null;
if (_QuickGeometries)
{
_MultiGeometries = false;
}
IPathNode pointNode = new PathNode(_GMLNS, "Point", (NameTable)_XmlReader.NameTable);
IPathNode lineStringNode = new PathNode(_GMLNS, "LineString", (NameTable)_XmlReader.NameTable);
IPathNode polygonNode = new PathNode(_GMLNS, "Polygon", (NameTable)_XmlReader.NameTable);
IPathNode multiPointNode = new PathNode(_GMLNS, "MultiPoint", (NameTable)_XmlReader.NameTable);
IPathNode multiLineStringNode = new PathNode(_GMLNS, "MultiLineString", (NameTable)_XmlReader.NameTable);
IPathNode multiCurveNode = new PathNode(_GMLNS, "MultiCurve", (NameTable)_XmlReader.NameTable);
IPathNode multiLineStringNodeAlt = new AlternativePathNodesCollection(multiLineStringNode, multiCurveNode);
IPathNode multiPolygonNode = new PathNode(_GMLNS, "MultiPolygon", (NameTable)_XmlReader.NameTable);
IPathNode multiSurfaceNode = new PathNode(_GMLNS, "MultiSurface", (NameTable)_XmlReader.NameTable);
IPathNode multiPolygonNodeAlt = new AlternativePathNodesCollection(multiPolygonNode, multiSurfaceNode);
while (_XmlReader.Read())
{
if (_XmlReader.NodeType == XmlNodeType.Element)
{
if (_MultiGeometries)
{
if (multiPointNode.Matches(_XmlReader))
{
geomFactory = new MultiPointFactory(_HttpClientUtil, _FeatureTypeInfo, _LabelInfo);
geometryTypeString = "MultiPointPropertyType";
break;
}
if (multiLineStringNodeAlt.Matches(_XmlReader))
{
geomFactory = new MultiLineStringFactory(_HttpClientUtil, _FeatureTypeInfo, _LabelInfo);
geometryTypeString = "MultiLineStringPropertyType";
break;
}
if (multiPolygonNodeAlt.Matches(_XmlReader))
{
geomFactory = new MultiPolygonFactory(_HttpClientUtil, _FeatureTypeInfo, _LabelInfo);
geometryTypeString = "MultiPolygonPropertyType";
break;
}
}
if (pointNode.Matches(_XmlReader))
{
geomFactory = new PointFactory(_HttpClientUtil, _FeatureTypeInfo, _LabelInfo);
geometryTypeString = "PointPropertyType";
break;
}
if (lineStringNode.Matches(_XmlReader))
{
geomFactory = new LineStringFactory(_HttpClientUtil, _FeatureTypeInfo, _LabelInfo);
geometryTypeString = "LineStringPropertyType";
break;
}
if (polygonNode.Matches(_XmlReader))
{
geomFactory = new PolygonFactory(_HttpClientUtil, _FeatureTypeInfo, _LabelInfo);
geometryTypeString = "PolygonPropertyType";
break;
}
if (_ServiceExceptionNode.Matches(_XmlReader))
{
serviceException = _XmlReader.ReadInnerXml();
Trace.TraceError("A service exception occured: " + serviceException);
throw new Exception("A service exception occured: " + serviceException);
}
}
}
_FeatureTypeInfo.Geometry._GeometryType = geometryTypeString;
if (geomFactory != null)
{
geomFactory.AxisOrder = AxisOrder;
var res = _QuickGeometries
? geomFactory.createQuickGeometries(geometryTypeString)
: geomFactory.createGeometries();
geomFactory.Dispose();
return(res);
}
return(_Geoms);
}