Bahuvrihi Tap (Task Application)

Comments and changes to this ticket

• 

  bahuvrihi March 5th, 2009 @ 05:11 PM

  This is actually trickier than it looks. It's not always straightforward to pick out the arity of the executable methods.
  

  
  executable.method(executable.method_name).arity
  

  Doesn't do it. Interned tasks will not be picked up correctly, nor will _method executables.

  Simply fishing for ArgumentErrors is also tricky... could do it in Executable, but you have to check to make sure the error is the result of a misjoin.

  
          rescue ArgumentError
            raise if previous.select {|_audit| _audit.key }.empty?
            raise JoinError(self, previous)
          end
  

  Moreover, you'd have to check to make sure the ArgumentError is coming from the call to the method and not something internal to process itself.

  May be best to fish for these top-level and try to detect... OR to begin implementing some annotation regarding what comes in and what goes out.