コード例 #1
0
    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;
    }