mondrian.olap.fun
Interface UdfResolver.UdfFactory
- All Known Implementing Classes:
- UdfResolver.ClassUdfFactory
- Enclosing class:
- UdfResolver
public static interface UdfResolver.UdfFactory
Factory for UserDefinedFunction.
This factory is required because a user-defined function is allowed
to store state in itself. Therefore it is unsanitary to use the same
UDF in the function table for validation and runtime. In the function
table there is a factory. We use one instance of instance of the UDF to
validate, and create another for the runtime plan.
create
UserDefinedFunction create()
- Creates a UDF.
- Returns:
- UDF