internal string DetectGeometryType()
{
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))
{
geometryTypeString = "MultiPointPropertyType";
break;
}
if (multiLineStringNodeAlt.Matches(_xmlReader))
{
geometryTypeString = "MultiLineStringPropertyType";
break;
}
if (multiPolygonNodeAlt.Matches(_xmlReader))
{
geometryTypeString = "MultiPolygonPropertyType";
break;
}
}
if (pointNode.Matches(_xmlReader))
{
geometryTypeString = "PointPropertyType";
break;
}
if (lineStringNode.Matches(_xmlReader))
{
geometryTypeString = "LineStringPropertyType";
break;
}
if (polygonNode.Matches(_xmlReader))
{
geometryTypeString = "PolygonPropertyType";
break;
}
if (_serviceExceptionNode.Matches(_xmlReader))
{
serviceException = _xmlReader.ReadInnerXml();
throw new Exception("A service exception occured: " + serviceException);
}
}
}
return geometryTypeString;
}
/// <summary>
/// This method detects the geometry type from 'GetFeature' response and uses a geometry factory to create the
/// appropriate geometries.
/// </summary>
/// <returns>Collection of GIS elements</returns>
internal override Collection<SimpleGisShape> 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(_xmlReader, _featureTypeInfo, _fieldNames);
geometryTypeString = "MultiPointPropertyType";
break;
}
if (multiLineStringNodeAlt.Matches(_xmlReader))
{
geomFactory = new MultiLineStringFactory(_xmlReader, _featureTypeInfo, _fieldNames);
geometryTypeString = "MultiLineStringPropertyType";
break;
}
if (multiPolygonNodeAlt.Matches(_xmlReader))
{
geomFactory = new MultiPolygonFactory(_xmlReader, _featureTypeInfo, _fieldNames);
geometryTypeString = "MultiPolygonPropertyType";
break;
}
}
if (pointNode.Matches(_xmlReader))
{
geomFactory = new PointFactory(_xmlReader, _featureTypeInfo, _fieldNames);
geometryTypeString = "PointPropertyType";
_featureTypeInfo.Geometry._GeometryType = "PointPropertyType";
break;
}
if (lineStringNode.Matches(_xmlReader))
{
geomFactory = new LineStringFactory(_xmlReader, _featureTypeInfo, _fieldNames);
geometryTypeString = "LineStringPropertyType";
break;
}
if (polygonNode.Matches(_xmlReader))
{
geomFactory = new PolygonFactory(_xmlReader, _featureTypeInfo, _fieldNames);
geometryTypeString = "PolygonPropertyType";
break;
}
if (_serviceExceptionNode.Matches(_xmlReader))
{
serviceException = _xmlReader.ReadInnerXml();
throw new Exception("A service exception occured: " + serviceException);
}
}
}
_featureTypeInfo.Geometry._GeometryType = geometryTypeString;
if (geomFactory != null)
return geomFactory.createGeometries();
return _shapes;
}
