IF Switch problem

[ptrwlr]

Hi community,

i have a workflow where i don’t understand the logic of the if switch nodes.

Can anyone tell me why the last end if doesn’t work?

Thx.

[takbb]

Hi @ptrwlr,

Not easy to determine from the picture. Are you able to reproduce this behaviour in a small sample workflow that you could upload?

Somebody asked a similar question here, but it looks like that was to do with loops:

Problem with inactive "End If" output port

Hello everyone, I am creating a KNIME Workflow where I have a “If Switch”. In the top port, I have a workflow which also use a if switch, and a loop. The bottom port only contains a “add empty row”. When I test it, inputing a table so that the bottom port is selected, the “End If” output port become inactive. I feel that it is because I have a loop inside my top workflow, but I am not sure. Could someone help me with this issue ? I can provide any further info if needed. Thank you very mu…

What does your workflow do before it gets to the sequence of IF switches?

[mlauber71]

Most likely you will have to check the “wiring”. The end of would expect an active branch and I am not sure if they can be put in a cascade without closing every one of them before. Maybe you could provide us with a small sample workflow to illustrate the problem.

End IF

Use Java Snippet to check if Column is there, fill a FlowVariable and then...