internal static DbSpatialDataReader CreateSpatialDataReader(MetadataWorkspace workspace, DbDataReader reader)
{
StoreItemCollection storeItemCollection = (StoreItemCollection)workspace.GetItemCollection(DataSpace.SSpace);
DbProviderFactory providerFactory = storeItemCollection.StoreProviderFactory;
Debug.Assert(providerFactory != null, "GetProviderSpatialServices requires provider factory to have been initialized");
DbProviderServices providerServices = DbProviderServices.GetProviderServices(providerFactory);
DbSpatialDataReader result = providerServices.GetSpatialDataReader(reader, storeItemCollection.StoreProviderManifestToken);
Debug.Assert(result != null, "DbProviderServices did not throw ProviderIncompatibleException for null IDbSpatialDataReader");
return(result);
}
internal static object GetSpatialValue(MetadataWorkspace workspace, DbDataReader reader, TypeUsage columnType, int columnOrdinal)
{
Debug.Assert(Helper.IsSpatialType(columnType));
DbSpatialDataReader spatialReader = CreateSpatialDataReader(workspace, reader);
if (Helper.IsGeographicType((PrimitiveType)columnType.EdmType))
{
return(spatialReader.GetGeography(columnOrdinal));
}
else
{
return(spatialReader.GetGeometry(columnOrdinal));
}
}