|
public Matches ( |
||
| reader | An XmlReader instance | |
| return | bool | |
/// <summary>
/// This method retrieves an XmlReader within a specified context.
/// Moreover it collects label values before or after a geometry could be found.
/// </summary>
/// <param name="reader">An XmlReader instance that is the origin of a created sub-reader</param>
/// <param name="labels">A dictionary for recording label values. Pass 'null' to ignore searching for label values</param>
/// <param name="pathNodes">A list of <see cref="IPathNode"/> instances defining the context of the retrieved reader</param>
/// <returns>A sub-reader of the XmlReader given as argument</returns>
protected XmlReader GetSubReaderOf(XmlReader reader, Dictionary <string, string> labels, List <IPathNode> pathNodes)
{
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
if (pathNodes[0].Matches(reader))
{
pathNodes.RemoveAt(0);
if (pathNodes.Count > 0)
{
return(GetSubReaderOf(reader.ReadSubtree(), null, pathNodes));
}
return(reader.ReadSubtree());
}
if (labels != null)
{
if (LabelNode != null)
{
if (LabelNode.Matches(reader))
{
var labelName = reader.Name;
var labelValue = reader.ReadString();
// remove the namespace
if (labelName.Contains(":"))
{
labelName = labelName.Split(':')[1];
}
labels.Add(labelName, labelValue);
}
}
}
if (!ServiceExceptionNode.Matches(reader))
{
continue;
}
string errorMessage = reader.ReadInnerXml();
Trace.TraceError("A service exception occured: " + errorMessage);
throw new Exception("A service exception occured: " + errorMessage);
}
}
return(null);
}
/// <summary>
/// This method retrieves an XmlReader within a specified context.
/// Moreover it collects label values before or after a geometry could be found.
/// </summary>
/// <param name="reader">An XmlReader instance that is the origin of a created sub-reader</param>
/// <param name="labelValue">A string array for recording a found label value. Pass 'null' to ignore searching for label values</param>
/// <param name="pathNodes">A list of <see cref="IPathNode"/> instances defining the context of the retrieved reader</param>
/// <returns>A sub-reader of the XmlReader given as argument</returns>
protected XmlReader GetSubReaderOf(XmlReader reader, string[] labelValue, List <IPathNode> pathNodes)
{
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
if (pathNodes[0].Matches(reader))
{
pathNodes.RemoveAt(0);
if (pathNodes.Count > 0)
{
return(GetSubReaderOf(reader.ReadSubtree(), null, pathNodes));
}
return(reader.ReadSubtree());
}
if (labelValue != null)
{
if (LabelNode != null)
{
if (LabelNode.Matches(reader))
{
labelValue[0] = reader.ReadElementString();
}
}
}
if (!ServiceExceptionNode.Matches(reader))
{
continue;
}
string errorMessage = reader.ReadInnerXml();
Trace.TraceError("A service exception occured: " + errorMessage);
throw new Exception("A service exception occured: " + errorMessage);
}
}
return(null);
}
/// <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(Features features)
{
GeometryFactory geomFactory = null;
string geometryTypeString = string.Empty;
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);
geometryTypeString = "MultiPointPropertyType";
break;
}
if (multiLineStringNodeAlt.Matches(XmlReader))
{
geomFactory = new MultiLineStringFactory(_httpClientUtil, FeatureTypeInfo);
geometryTypeString = "MultiLineStringPropertyType";
break;
}
if (multiPolygonNodeAlt.Matches(XmlReader))
{
geomFactory = new MultiPolygonFactory(_httpClientUtil, FeatureTypeInfo);
geometryTypeString = "MultiPolygonPropertyType";
break;
}
}
if (pointNode.Matches(XmlReader))
{
geomFactory = new PointFactory(_httpClientUtil, FeatureTypeInfo);
geometryTypeString = "PointPropertyType";
break;
}
if (lineStringNode.Matches(XmlReader))
{
geomFactory = new LineStringFactory(_httpClientUtil, FeatureTypeInfo);
geometryTypeString = "LineStringPropertyType";
break;
}
if (polygonNode.Matches(XmlReader))
{
geomFactory = new PolygonFactory(_httpClientUtil, FeatureTypeInfo);
geometryTypeString = "PolygonPropertyType";
break;
}
if (ServiceExceptionNode.Matches(XmlReader))
{
string 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(Geoms);
}
geomFactory.CreateGeometries(features);
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<Geometry> CreateGeometries(Features features)
{
GeometryFactory geomFactory = null;
string geometryTypeString = string.Empty;
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);
geometryTypeString = "MultiPointPropertyType";
break;
}
if (multiLineStringNodeAlt.Matches(XmlReader))
{
geomFactory = new MultiLineStringFactory(_httpClientUtil, FeatureTypeInfo);
geometryTypeString = "MultiLineStringPropertyType";
break;
}
if (multiPolygonNodeAlt.Matches(XmlReader))
{
geomFactory = new MultiPolygonFactory(_httpClientUtil, FeatureTypeInfo);
geometryTypeString = "MultiPolygonPropertyType";
break;
}
}
if (pointNode.Matches(XmlReader))
{
geomFactory = new PointFactory(_httpClientUtil, FeatureTypeInfo);
geometryTypeString = "PointPropertyType";
break;
}
if (lineStringNode.Matches(XmlReader))
{
geomFactory = new LineStringFactory(_httpClientUtil, FeatureTypeInfo);
geometryTypeString = "LineStringPropertyType";
break;
}
if (polygonNode.Matches(XmlReader))
{
geomFactory = new PolygonFactory(_httpClientUtil, FeatureTypeInfo);
geometryTypeString = "PolygonPropertyType";
break;
}
if (ServiceExceptionNode.Matches(XmlReader))
{
string 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 Geoms;
geomFactory.CreateGeometries(features);
return Geoms;
}
