public GeoServicesClass(GeoServicesDataset dataset)
{
_dataset = dataset;
if (_dataset != null)
{
this.Name = _dataset._name;
}
}
public GeoServicesFeatureCursor(GeoServicesDataset dataset,
GeoServicesFeatureClass featureClass,
string queryUrl,
string postData,
string where)
{
_dataset = dataset;
_featureClass = featureClass;
_queryUrl = queryUrl;
_postData = postData;
_where = where;
}
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);
}
async public Task <object> GetInstanceAsync()
{
if (_class == null)
{
GeoServicesDataset dataset = new GeoServicesDataset(
_connectionString,
(String.IsNullOrWhiteSpace(_folder) ? "" : $"{_folder}/") + _name);
await dataset.Open();
var elements = await dataset.Elements();
if (elements.Count == 0)
{
dataset.Dispose();
return(null);
}
_class = elements[0].Class as GeoServicesClass;
}
return(_class);
}
