String Manipulation (Multi Column) fails with NullPointerException for missing values

Hi,

in reference to a bug report of mine I recognized the String Manipulation "Multi Column) fails with a NullPointerException for missing column values. It seems, though, it’s only for missing values BUT not, contrary to the initial bug report, caused by unspecific column types.

From my perspective the String Manipulation (Multi Column) Node is heavily bugged and need to be fixed urgently.

Here is the sample workflow showcasing the bug:

https://hub.knime.com/mw/spaces/Public/latest/Bugs/String%20manipulation%20Multi%20Column%20NullPointerException

best
Mike

2 Likes

Hi Mike,

thank you for the report. I will have a look and create a bug ticket if needed.
I will get back to you as soon as I know more.

Best,
Julian

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