topic Re: Content Model Change? in Alfresco Archive

Content Model Change?

dannyl999 — Tue, 28 Aug 2012 00:44:30 GMT

Hi,I was upgrading our Alfresco 3.2r system to 4.0.2, and we successfully upgraded it to 3.4.10. We started to upgrade to 4.0.2 and got to the point where it started up succesfully. But then, we came across this error in one of our custom Java-backed webscripts:java.lang.IllegalArgumentException:

Re: Content Model Change?

mitpatoliya — Tue, 28 Aug 2012 11:07:43 GMT

Hi danny,
Try this
NodeRef workingCopyRef = this.getCheckOutCheckInService().getWorkingCopy(getDocument().getNodeRef());

This is supported in Alfresco4.0.

Re: Content Model Change?

dannyl999 — Tue, 28 Aug 2012 17:25:01 GMT

Sorry about that. I didn't mean nodeService.getWorkingCopy(). I meant checkInCheckOutService.getWorkingCopy() is returning NULL. Again, this is only for the files that were checked out in an older version of Alfresco. I am able to get the working copy for files that were checked out in Alfresco 4.

So the used case would be:
1. Start off with Alfresco 3.4.10
2. Check out a file
3. Upgrade to 4.0.2
4. Call CheckOutCheckInService.getWorkingCopy on the file that was checked out.

Result: NULL

I hope that makes more sense.

Re: Content Model Change?

mitpatoliya — Wed, 29 Aug 2012 06:15:54 GMT

Ohh okey use case clear.
So, what you need to do in this case is as follow.
Check which aspect is applied to the working copies of all document.
I guess in 3.4 it was "cm:workingcopy" aspect by looking at the content model of 3.4

So you can grab all such documents in and add the new checkedOut aspect to it.

Also there is one more aspect called "cm:copiedfrom" that i guess gives you the original document.

So, you populate the values of "cm:workingcopy" aspect and apply that.

You can create alfresco javascript for that.

Re: Content Model Change?

dannyl999 — Wed, 29 Aug 2012 17:06:30 GMT

Gotcha. I was hoping I didn't have to create this migration script, and that I missed a step somewhere during the upgrade installation.

So, the steps I am hoping to do:
1. Find all nodes with the aspect cm:workingcopy
2. For each node, do the following:
2a. Get nodeId from the property cm:source (which I believe comes from the cm:copiedfrom)
2b. Add the aspect cm:checkedOut
2c. Add a cm:workingcopylink association between the current node and the node from step 2a
2d. Remove the cm:workingcopy and the cm:copiedfrom aspect (Hoping this works, even though it doesn't exist in the content model)
3. Test check in and undo check out.

I'll see what happens. Thanks.

Re: Content Model Change?

mitpatoliya — Thu, 30 Aug 2012 07:00:33 GMT

Yes, that's the way to go.
Best of luck 😎