Workflow output automation and pop/push

As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.

Anthony_H

Hello,

i'm working on an automation chain to execute at output of a workflow task node. As soon as I add a "pop/push document" operation in the chain, an exception is thrown when the workflow execute it. To be more precise, the exception is thrown by the operation next to the pop/push, which always fail with a message similar to :

Caught error: Cannot find any valid path in operation chain - no method found for operation 'XXXXXX' and for first input type 'org.nuxeo.ecm.core.api.impl.DocumentModelListImpl'

XXXXX is any operation waiting for a document input, next to the pop or the push.

I tried to call the operation chain outside of the workflow, using a context button on document, and it works well.

Any idea ? is there something "different" to do to get the context document on a workflow operation chain ?

I'm using nuxeo 5.8 HF15.

Anthony.

Anthony_H

Sorry, answer is in the bottom of the documentation ! :

Getting the first document of the document list in the automation chains ran from a workflow node Icon As we mentioned above, the workflow engine injects a document list in the automation chain, even when there is only one document. You may have sometime a "Cannot find any valid path in operation chain" exception, because the operation you put in the chain expects one document in input and the previous operation gives a list. You can avoid this situation, when you know you have only one document, by fetching this document first. To do so, you can use:

Execution Context > Restore input document from a script
script: This[0]

Then, for the rest of the chain, you will have only one document in input transiting from one operation to the other.