Exemplo n.º 1
0
        /// <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);
        }
Exemplo n.º 2
0
        /// <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);
        }