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Get a new GenericUDF object for the function.
Get a new GenericUDTF object for the function.
Get the GenericUDAFResolver object for the function.
Get the Class of the UDF.
Get the display name for this function. This should be transfered into
exprNodeGenericUDFDesc, and will be used as the first parameter to
GenericUDF.getDisplayName() call, instead of hard-coding the function name.
This will solve the problem of displaying only one name when a udf is
registered under 2 names.
Native functions cannot be unregistered.
- TRUE if the function is a GenericUDF
- TRUE if the function is a GenericUDAF
- TRUE if the function is a GenericUDTF