async public Task <IDataset2> EmptyCopy()
{
var dataset = new MongoDbDataset();
await dataset.SetConnectionString(ConnectionString);
await dataset.Open();
return(dataset);
}
async static public Task <MongoDbFeatureClass> Create(MongoDbDataset dataset, Json.SpatialCollectionItem spatialCollectoinItem)
{
var fc = new MongoDbFeatureClass();
fc.Dataset = dataset;
fc.Name = spatialCollectoinItem.Name;
if (spatialCollectoinItem.GeometryDef != null)
{
fc.HasZ = spatialCollectoinItem.GeometryDef.HasZ;
fc.HasM = spatialCollectoinItem.GeometryDef.HasM;
fc.GeometryType = spatialCollectoinItem.GeometryDef.GeometryType;
fc.SpatialReference = dataset._spatialReference; // ToDo
}
var fields = new Fields();
//fields.Add(new Field("_id", FieldType.ID));
fields.Add(new Field("_shape", FieldType.Shape));
if (spatialCollectoinItem.Fields != null)
{
foreach (var field in spatialCollectoinItem.Fields)
{
fields.Add(new Field()
{
name = field.Name,
type = field.FieldType
});
}
}
fc.Fields = fields;
fc.MongoCollection = await dataset.GetFeatureCollection(fc);
fc.Envelope = spatialCollectoinItem.FeatureBounds?.ToEnvelope() ?? new Envelope(-180, -90, 180, 90);
fc.GeneralizationLevel = spatialCollectoinItem.GeneralizationLevel;
return(fc);
}
