Copies the tuple, since cascading may change it after the end of an operation (and it is not safe to assume the consumer has not kept a ref to this tuple
Copies the tupleEntry, since cascading may change it after the end of an operation (and it is not safe to assume the consumer has not kept a ref to this tuple
Base class for objects which unpack an object into a tuple. The packer can verify the arity, types, and also the existence of the getter methods at plan time, without having the job blow up in the middle of a run.