loop xml reader with variable failed

[nbindini]

Hi, I have a problem with the workflow attached. I have to read several xml files, sometime one o more file don’t exist, the node failed e the loop ends. I would like to ingore those files, ma I don’t know how to do. I think thant i have to use try and catch, but i need an help. Someone can fix my project? thank a lot and sorry for my english loop_xml_failed.zip (12.6 KB)

[ipazin]

Hi there @nbindini,

welcome to KNIME Community!

If I got you right that means your XML Reader reports error on configuration and that can not be caught with Try/Catch sequence. Check this topic how to deal with it.

Br,
Ivan

[nbindini]

Hi, thank a lot for the help. I’m sorry but i didn’t solve. I don’t know why, but URL to file path node file ever fails, I post the screenshot of the project.
I try to enter in the loop with adress files writing in different ways but i have ever the same result.

thank a lot.

[ipazin]

Hi @nbindini,

so you are reading from URLs. Wasn’t aware of that one. Then it makes things a bit easier but you need to be careful about URL format otherwise XML Reader will think of it as a local file and fail during configuration which isn’t caught by Try/Catch sequence.

Here is workflow on KNIME Hub which you can download and modify according to your needs.

Reading XMLs from URLs in a Try/Catch Loop – ipazin

Hope this helps!

Br,
Ivan

[nbindini]

Wonderful,
you solved my problem,
thank you very much Ivan!