async static internal Task <GeoServicesFeatureClass> CreateAsync(GeoServicesDataset dataset, JsonLayer jsonLayer)
{
var featureClass = new GeoServicesFeatureClass();
featureClass._dataaset = dataset;
featureClass.ID = jsonLayer.Id.ToString();
featureClass.Name = jsonLayer.Name;
var fields = featureClass.Fields as Fields;
if (fields != null && jsonLayer.Fields != null)
{
foreach (var jsonField in jsonLayer.Fields)
{
var fieldType = RestHelper.FType(jsonField.Type);
if (fieldType == FieldType.String)
{
fields.Add(new Field(jsonField.Name, fieldType, 1024)
{
aliasname = jsonField.Alias ?? jsonField.Name
});
}
else
{
fields.Add(new Field(jsonField.Name, fieldType)
{
aliasname = jsonField.Alias ?? jsonField.Name
});
}
if (fieldType == FieldType.ID)
{
featureClass.IDFieldName = jsonField.Name;
}
}
}
featureClass.GeometryType = jsonLayer.GetGeometryType();
if (jsonLayer.Extent != null)
{
featureClass.Envelope = new Envelope(jsonLayer.Extent.Xmin,
jsonLayer.Extent.Ymin,
jsonLayer.Extent.Xmax,
jsonLayer.Extent.Ymax);
}
featureClass.SpatialReference = await dataset.GetSpatialReference();
return(featureClass);
}
public GeoServicesFeatureCursor(GeoServicesDataset dataset,
GeoServicesFeatureClass featureClass,
string queryUrl,
string postData,
string where)
{
_dataset = dataset;
_featureClass = featureClass;
_queryUrl = queryUrl;
_postData = postData;
_where = where;
}
async public Task <bool> Open(IServiceRequestContext context)
{
if (_class == null)
{
_class = new GeoServicesClass(this);
}
_class.Themes.Clear();
_themes = new List <IWebServiceTheme>();
string serviceUrl = ServiceUrl();
string user = ConfigTextStream.ExtractValue(ConnectionString, "user");
string pwd = ConfigTextStream.ExtractValue(ConnectionString, "pwd");
var jsonMapService = await TryPostAsync <JsonMapService>($"{serviceUrl}?f=json");
var jsonLayers = await TryPostAsync <JsonLayers>($"{serviceUrl}/layers?f=json");
if (jsonMapService != null)
{
_class.Name = jsonMapService.MapName;
if (jsonMapService.FullExtent != null)
{
_class.Envelope = new Envelope(
jsonMapService.FullExtent.XMin,
jsonMapService.FullExtent.YMin,
jsonMapService.FullExtent.XMax,
jsonMapService.FullExtent.YMax);
}
if (jsonMapService.SpatialReferenceInstance != null &&
jsonMapService.SpatialReferenceInstance.Wkid > 0)
{
var sRef = gView.Framework.Geometry.SpatialReference.FromID("epsg:" + jsonMapService.SpatialReferenceInstance.Wkid);
this.SetSpatialReference(sRef);
_class.SpatialReference = sRef;
}
if (jsonLayers?.Layers != null)
{
foreach (var jsonLayer in jsonLayers.Layers)
{
IClass themeClass = null;
IWebServiceTheme theme = null;
if (jsonLayer.Type.ToLower() == "feature layer")
{
themeClass = await GeoServicesFeatureClass.CreateAsync(this, jsonLayer);
theme = LayerFactory.Create(themeClass, _class as IWebServiceClass) as IWebServiceTheme;
if (theme == null)
{
continue;
}
}
// ToDo Raster classes
if (themeClass == null)
{
continue;
}
theme.Visible = true; //false;
_class.Themes.Add(theme);
}
}
}
return(true);
}
public GeoServicesServiceLayerExplorerObject(IExplorerObject parent, GeoServicesFeatureClass featureClass)
: base(parent, typeof(GeoServicesFeatureClass), 1)
{
_parent = parent;
_fc = featureClass;
}