How can I check if a doc exists in Knowledge Center within a process?

RE: How can I check if a doc exists in Knowledge Center within a process?

ujjwalr0002 — Fri, 30 Sep 2022 15:16:50 GMT

Okay I will take care of this but we discussed the validation part there as well.

RE: How can I check if a doc exists in Knowledge Center within a process?

Mike Schmitt — Fri, 30 Sep 2022 15:14:37 GMT

[quote userid="64098" url="~/discussions/f/general/26083/how-can-i-check-if-a-doc-exists-in-knowledge-center-within-a-process/102200#102200"]Check this [/quote]

meh.. that thread was a bit of a mess. i'm still not sure whether that user ever clarified whether they were referring to a just-uploaded document or not, which is a *completely different* use case with different error implications. super frustrating how people post questions then won't post relevant details even after we beg them to...

RE: How can I check if a doc exists in Knowledge Center within a process?

Mike Schmitt — Fri, 30 Sep 2022 15:10:13 GMT

There are various ways to take a doc ID and check that it represents a valid document in the system - one of the easier current ways that I actually use is the function "isobjectexists()" found in the Check Objects Existence plug-in. I wrap this function in an expression rule that I call something like "APP_Util_docExists()", where i also check that the input ID is non-empty and non-zero before calling the plug-in function on it.

and(
  a!isNotNullOrEmpty(ri!doc),
  tointeger(ri!doc) > 0,
  
  isobjectexists("Document", ri!doc)
)

RE: How can I check if a doc exists in Knowledge Center within a process?

ujjwalr0002 — Fri, 30 Sep 2022 14:15:16 GMT

Check this https://community.appian.com/discussions/f/user-interface/25775/error-when-use-function-document

RE: How can I check if a doc exists in Knowledge Center within a process?

hunterr0001 — Fri, 30 Sep 2022 14:08:18 GMT

Thanks for the response.

Docs to be deleted node gets doc Ids from DB and outputs a list of Documents. I would like to check if each document in list is a valid document in Appian and if not, remove it from list.

RE: How can I check if a doc exists in Knowledge Center within a process?

Mike Schmitt — Fri, 30 Sep 2022 13:48:46 GMT

Can you clarify what you mean by this?

[quote userid="54999" url="~/discussions/f/general/26083/how-can-i-check-if-a-doc-exists-in-knowledge-center-within-a-process"]check if it exists in Knowledge Center[/quote]

Are you saying it should be in some specific knowledge center, and if it isn't in that specific knowledge center, then don't delete it? Or are you merely saying you want to check that it's a valid document ID within Appian? Since all documents are in *some* knowledge center to begin with.

Honestly the best place to do this might be in the code you're using for the "Docs to be Deleted" node - especially if you're handling that output with an expression rule where you can easily test different scenarios.

RE: How can I check if a doc exists in Knowledge Center within a process?

ujjwalr0002 — Fri, 30 Sep 2022 03:29:34 GMT

To check the knowledge center ID for documents you can use the document function we have a property as knowledgeCenterId once you have the IDs you can use whereContains and index functions to get the filtered list.