Is there a way for me to retrieve the #ID of a component from the local workflow for me to use in a folder path? I would like the component to be able to self identify its own #ID build a unique path for generated log files.

I was able to have components self locate their folder within the workflow using the “Timer Info” node to generate the node IDs. The trick is that the component needs to be saved into the workflow in order for this approach to work on the initial execution of the node. I used the Save Workflow node followed by a 1 second delay to ensure that the component folder exists before the search. Essentially the trick is to use the “Extract Context Properties” to get the absolute path of the workflow folder (context.workflow.absolute-path), then split the Node ID via Cell Splitter or Regex to grab the second part of the node ID (to find the component ID in the main workflow), then use column expressions to turn it into a regex search (example - .*#16487.) Then use the List Files / Folders node using the workflow folder path variable to find the main folder (using list folder setting), then I used the Component ID variable as the flow variable folders_name_expression to find the specific parent component folder. After that I was able to create a log file folder directory and create / use a component specific logfile.

Retrieve Component "ID" From Workflow?

KNIME Analytics Platform

ArjenEX May 11, 2023, 3:13pm 2

Hi @iCFO

Would this be a starting point?