/// <summary>
/// This method produces instances of type <see cref="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);
string[] labelValue = new string[1];
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, labelValue, multiPolygonNodeAlt, polygonMemberNodeAlt)) != null)
{
GeometryFactory geomFactory = new PolygonFactory(_GeomReader, _FeatureTypeInfo)
{
AxisOrder = AxisOrder
};
var polygons = geomFactory.createGeometries();
var polygonArray = new IPolygon[polygons.Count];
var i = 0;
foreach (IPolygon polygon in polygons)
{
polygonArray[i++] = polygon;
}
_Geoms.Add(Factory.CreateMultiPolygon(polygonArray));
geomFound = true;
}
if (geomFound)
{
AddLabel(labelValue[0], _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 'GetFeatureByOid' 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)
return _QuickGeometries
? geomFactory.createQuickGeometries(geometryTypeString)
: geomFactory.createGeometries();
return _Geoms;
}
/// <summary>
/// This method produces instances of type <see cref="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);
string[] labelValue = new string[1];
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, labelValue, multiPolygonNodeAlt, polygonMemberNodeAlt)) != null)
{
GeometryFactory geomFactory = new PolygonFactory(_GeomReader, _FeatureTypeInfo);
var polygons = geomFactory.createGeometries();
var polygonArray = new IPolygon[polygons.Count];
var i = 0;
foreach (IPolygon polygon in polygons)
polygonArray[i++] = polygon;
_Geoms.Add(Factory.CreateMultiPolygon(polygonArray));
geomFound = true;
}
if (geomFound) AddLabel(labelValue[0], _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>
/// Gets the features within the specified <see cref="GeoAPI.Geometries.Envelope"/>
/// </summary>
/// <param name="bbox"></param>
/// <returns>Features within the specified <see cref="GeoAPI.Geometries.Envelope"/></returns>
public Collection<IGeometry> GetGeometriesInView(Envelope bbox)
{
if (_featureTypeInfo == null) return null;
var geoms = new Collection<IGeometry>();
string geometryTypeString = _featureTypeInfo.Geometry._GeometryType;
GeometryFactory geomFactory = null;
if (!string.IsNullOrEmpty(_label))
{
_labelInfo = new FeatureDataTable();
_labelInfo.Columns.Add(_label);
// Turn off quick geometries, if a label is applied...
_quickGeometries = false;
}
// Configuration for GetFeature request */
WFSClientHTTPConfigurator config = new WFSClientHTTPConfigurator(_textResources);
config.configureForWfsGetFeatureRequest(_httpClientUtil, _featureTypeInfo, _label, bbox, _ogcFilter,
_getFeatureGETRequest);
try
{
switch (geometryTypeString)
{
/* Primitive geometry elements */
// GML2
case "PointPropertyType":
geomFactory = new PointFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML2
case "LineStringPropertyType":
geomFactory = new LineStringFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML2
case "PolygonPropertyType":
geomFactory = new PolygonFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML3
case "CurvePropertyType":
geomFactory = new LineStringFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML3
case "SurfacePropertyType":
geomFactory = new PolygonFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
/* Aggregate geometry elements */
// GML2
case "MultiPointPropertyType":
if (_multiGeometries)
geomFactory = new MultiPointFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
else
geomFactory = new PointFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML2
case "MultiLineStringPropertyType":
if (_multiGeometries)
geomFactory = new MultiLineStringFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
else
geomFactory = new LineStringFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML2
case "MultiPolygonPropertyType":
if (_multiGeometries)
geomFactory = new MultiPolygonFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
else
geomFactory = new PolygonFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML3
case "MultiCurvePropertyType":
if (_multiGeometries)
geomFactory = new MultiLineStringFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
else
geomFactory = new LineStringFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML3
case "MultiSurfacePropertyType":
if (_multiGeometries)
geomFactory = new MultiPolygonFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
else
geomFactory = new PolygonFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// .e.g. 'gml:GeometryAssociationType' or 'GeometryPropertyType'
//It's better to set the geometry type manually, if it is known...
default:
geomFactory = new UnspecifiedGeometryFactory_WFS1_0_0_GML2(_httpClientUtil, _featureTypeInfo,
_multiGeometries, _quickGeometries,
_labelInfo);
geoms = geomFactory.createGeometries();
return geoms;
}
geoms = _quickGeometries
? geomFactory.createQuickGeometries(geometryTypeString)
: geomFactory.createGeometries();
geomFactory.Dispose();
return geoms;
}
// Free resources (net connection of geometry factory)
finally
{
if (geomFactory != null)
{
geomFactory.Dispose();
}
}
}
/// <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 <Geometry> 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);
}
/// <summary>
/// Gets the features within the specified <see cref="GeoAPI.Geometries.Envelope"/>
/// </summary>
/// <param name="bbox"></param>
/// <returns>Features within the specified <see cref="GeoAPI.Geometries.Envelope"/></returns>
public IEnumerable<IGeometry> GetGeometriesInView(Envelope bbox, CancellationToken? cancellationToken = null)
{
if (_featureTypeInfo == null) return null;
var geoms = new Collection<IGeometry>();
string geometryTypeString = _featureTypeInfo.Geometry._GeometryType;
GeometryFactory geomFactory = null;
if (!string.IsNullOrEmpty(_label))
{
var ff = FeatureFactory.CreateInt32(GeoAPI.GeometryServiceProvider.Instance.CreateGeometryFactory(SRID),
new FeatureAttributeDefinition
{
AttributeName = "Label",
Default = string.Empty,
AttributeType = typeof(string),
IsNullable = true
});
_labelInfo = new FeatureCollection<int>(ff);
// Turn off quick geometries, if a label is applied...
_quickGeometries = false;
}
// Configuration for GetFeatureByOid request */
WFSClientHTTPConfigurator config = new WFSClientHTTPConfigurator(_textResources);
config.configureForWfsGetFeatureRequest(_httpClientUtil, _featureTypeInfo, _label, bbox, _ogcFilter,
_getFeatureGETRequest);
try
{
switch (geometryTypeString)
{
/* Primitive geometry elements */
// GML2
case "PointPropertyType":
geomFactory = new PointFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML2
case "LineStringPropertyType":
geomFactory = new LineStringFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML2
case "PolygonPropertyType":
geomFactory = new PolygonFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML3
case "CurvePropertyType":
geomFactory = new LineStringFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML3
case "SurfacePropertyType":
geomFactory = new PolygonFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
/* Aggregate geometry elements */
// GML2
case "MultiPointPropertyType":
if (_multiGeometries)
geomFactory = new MultiPointFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
else
geomFactory = new PointFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML2
case "MultiLineStringPropertyType":
if (_multiGeometries)
geomFactory = new MultiLineStringFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
else
geomFactory = new LineStringFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML2
case "MultiPolygonPropertyType":
if (_multiGeometries)
geomFactory = new MultiPolygonFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
else
geomFactory = new PolygonFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML3
case "MultiCurvePropertyType":
if (_multiGeometries)
geomFactory = new MultiLineStringFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
else
geomFactory = new LineStringFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// GML3
case "MultiSurfacePropertyType":
if (_multiGeometries)
geomFactory = new MultiPolygonFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
else
geomFactory = new PolygonFactory(_httpClientUtil, _featureTypeInfo, _labelInfo);
break;
// .e.g. 'gml:GeometryAssociationType' or 'GeometryPropertyType'
//It's better to set the geometry type manually, if it is known...
default:
geomFactory = new UnspecifiedGeometryFactory_WFS1_0_0_GML2(_httpClientUtil, _featureTypeInfo,
_multiGeometries, _quickGeometries,
_labelInfo);
geoms = geomFactory.createGeometries();
return geoms;
}
geoms = _quickGeometries
? geomFactory.createQuickGeometries(geometryTypeString)
: geomFactory.createGeometries();
geomFactory.Dispose();
return geoms;
}
// Free resources (net connection of geometry factory)
finally
{
if (geomFactory != null)
{
geomFactory.Dispose();
}
}
}