[Archivesspace_Users_Group] Archon migration SortOrder values

[Prom, Christopher John]

Patrick,

The Archonsort order values are relative to the parent ID-- in other words, not unique.  However, I don’t think that this problem is related to the query you tried to do below, since the issue you are having is with the classifications.  For that reason, you may wish to look for a duplicate parent ID/SortOrder combination in the classification table instead.

It will be a much shorter group of records, so if you can’t find it via a query, you may be able to identify the problem via manual inspection.

Chris Prom

On Jan 11, 2016, at 7:10 AM, Flanagan, Patrick <PJFlanagan at ship.edu<mailto:PJFlanagan at ship.edu>> wrote:

Good morning,

A little while ago I messaged the group about a null pointer exception during migration from Archon -> ArchivesSpace. This question is semi-related to that.

Among the checks to perform before migration is one relating to duplicate SortOrder values in tblCollections_Content. The associated query to perform is: "SELECT ParentID, SortOrder, count(*) from tblCollections_Content Group by ParentID, SortOrder HAVING count(*) > 1;"

I didn't fix that in the current instance I'm migrating because count(*) adds up across 144 rows to be well over 10,000. I'm wondering if that might be the cause of a null pointer exception when attempting to migrate from Archon. A sample of the latest error I've received:

Getting records for: ?p=core/classifications&batch_start=1801
get: https://archon.klnpa.org/psa?p=core/classifications&batch_start=1801
Status code: 200
Status text: Created
response: No matching record(s) found for batch_start=1801
java.lang.NullPointerException
        at org.nyu.edu.dlts.utils.ArchonClient.getRootParent(ArchonClient.java:499)
        at org.nyu.edu.dlts.utils.ArchonClient.getRootParent(ArchonClient.java:520)
        at org.nyu.edu.dlts.utils.ArchonClient.getClassificationRecords(ArchonClient.java:431)
        at org.nyu.edu.dlts.utils.ASpaceCopyUtil.copyClassificationRecords(ASpaceCopyUtil.java:918)
        at org.nyu.edu.dlts.dbCopyFrame$1.run(dbCopyFrame.java:231)
        at java.lang.Thread.run(Thread.java:745)

I was wondering: are the SortOrder values largely arbitrary? If I write up a quick script just to ensure each one has a unique value, would that potentially solve the issue? It's affecting numerous migration attempts. Thank you for your time,

~Patrick Flanagan
KLN Applications Administrator
Keystone Library Network Hub

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