Can a loop have dynamic in-, and output ports?

Hi everyone!

I would like to perform a loop, but I do not know how many in-, and output ports will the solution have (it would be embedded into a component) (I would like to process input Excels, dynamic numbers).

Could it be done in the actual version in KNIME? As I saw there are loops that can have changeable number of ports, but I couldn’t find a way to be the port number dynamic.

Thank You in advance!

The only way I can think of is using variables with switches (if, case) to direct the component to different loops, but that’s just theory. Have not tried it yet.

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Thank You Daniel. That could work but it would mean You have to “pre-program” the possible numbers and if You didn’t prepare high enough number, than it will run to error or will give an unsatisfying output(s).

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