internal static string GenerateColumnNamesMappingForSortByColumns(DType sourceType)
{
Contracts.Assert(sourceType.IsTable);
var allColumns = sourceType.GetNames(DPath.Root);
string separator = string.Empty;
var primitiveColumnsAndComparatorIds = new StringBuilder();
primitiveColumnsAndComparatorIds.Append("{");
foreach (var column in allColumns)
{
if (column.Type.IsPrimitive && !column.Type.IsOptionSet)
{
primitiveColumnsAndComparatorIds.AppendFormat("{0}\"{1}\":{2}", separator, CharacterUtils.EscapeString(column.Name),
GetSortComparatorIdForType(column.Type));
separator = ",";
}
}
primitiveColumnsAndComparatorIds.Append("}");
return(primitiveColumnsAndComparatorIds.ToString());
}
