public bool ShowSpatialFilter()
{
bool result = true;
MgUserInformation userInfo = new MgUserInformation(Request["SESSION"]);
MgSiteConnection siteConnection = new MgSiteConnection();
siteConnection.Open(userInfo);
MgResourceIdentifier sdfResId = new MgResourceIdentifier("Session:" + Request["SESSION"] + "//Filter.FeatureSource");
MgResourceService resourceService = siteConnection.CreateService(MgServiceType.ResourceService) as MgResourceService;
MgFeatureService featureService = siteConnection.CreateService(MgServiceType.FeatureService) as MgFeatureService;
MgFeatureCommandCollection updateCommands = new MgFeatureCommandCollection();
MgMap map = new MgMap();
map.Open(resourceService, Request["MAPNAME"]);
MgLayer layer = null;
MgLayerCollection layers = map.GetLayers();
if (layers.Contains("_QuerySpatialFilter"))
{
layer = (MgLayer)layers.GetItem("_QuerySpatialFilter");
//updateCommands.Add(new MgDeleteFeatures("Filter", "ID > 0"));
}
else
{
// Create the Feature Source (SDF)
MgFeatureSchema sdfSchema = this.CreateFilterSchema();
MgCreateSdfParams sdfParams = new MgCreateSdfParams("MAPCS", map.GetMapSRS(), sdfSchema);
featureService.CreateFeatureSource(sdfResId, sdfParams);
// Create the Layer
MgResourceIdentifier layerResId = new MgResourceIdentifier("Session:" + Request["SESSION"] + "//Filter.LayerDefinition");
String layerDefinition = File.ReadAllText(GetQueryXmlTemplatePath());
layerDefinition = layerDefinition.Replace("%s", sdfResId.ToString());
MgByteReader reader = new MgByteReader(layerDefinition, "text/xml");
resourceService.SetResource(layerResId, reader, null);
layer = new MgLayer(layerResId, resourceService);
layer.SetName("_QuerySpatialFilter");
layer.SetLegendLabel("תחום זמני");
layer.SetDisplayInLegend(true);
layer.SetSelectable(true);
layer.ForceRefresh();
layer.NeedsRefresh();
layers.Insert(0, layer);
}
// Make the layer visible
layer.SetVisible(true);
map.Save(resourceService);
// Add the geometry to the filter feature source
MgPolygon polygon = this.CreatePolygonFromGeomText(Request["GEOMTEXT"].ToString());
MgAgfReaderWriter agfWriter = new MgAgfReaderWriter();
MgByteReader byteReader = agfWriter.Write(polygon);
MgPropertyCollection propertyValues = new MgPropertyCollection();
propertyValues.Add(new MgGeometryProperty("Geometry", byteReader));
try
{
updateCommands.Add(new MgInsertFeatures("Filter", propertyValues));
featureService.UpdateFeatures(sdfResId, updateCommands, false);
}
catch { }
return result;
}