get "merge accounts" working again #5978

[pdurbin]

Fixes #5978

The NamedQuery GuestbookResponse.findByAuthenticatedUserId was removed in pull request #5863 and I don't know why.

What I do know is that UsersIT.testMergeAccounts is failing, as reported in #5978

This pull request restores the NamedQuery back to how it was in Dataverse 4.15 before pull request #5863 was merged.

I haven't tested if the "Merge User Accounts" feature of the native API works or not but here are the docs: http://guides.dataverse.org/en/4.15/api/native-api.html#merge-accounts-label

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Update 1.

On the phoenix server running 2f477c9 , the latest in develop, I just tried merging the user "chestnut" into user "sparrow" and it failed a CommandException.

So this is a case of the phoenix server catching a real regression. You can't merge accounts anymore if you're running the "develop" branch.

curl -H "X-Dataverse-key: $API_TOKEN" -X POST http://localhost:8080/api/users/chestnut/mergeIntoUser/sparrow

{"status":"ERROR","message":"Error calling ChangeUserIdentifierCommand: edu.harvard.iq.dataverse.engine.command.exception.CommandException: Command edu.harvard.iq.dataverse.engine.command.impl.MergeInAccountCommand@6dfcd65c failed: null"}

It's the same error I reported at #5978 (comment)

Caused by: java.lang.IllegalArgumentException: NamedQuery of name: GuestbookResponse.findByAuthenticatedUserId not found.

So I hope that this pull request is a good fix. I added that NamedQuery back in. I don't know why it was removed.

[kcondon]

Tested, works.