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https://issues.apache.org/jira/browse/ISIS-2020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16680953#comment-16680953
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Andi Huber commented on ISIS-2020:
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Hi Brian,
thanks for the effort and findings! And you are asking great questions, which
are noticed, but I fail to answer, because I don't yet understand our DN
integration well enough. Maybe Dan has more insight.
With your last comment you are proposing a fine workaround, which in case of a
FederatedStoreManager would make it the responsibility of the developer to
properly setup the DN properties in order for schema creation to work. Whereas
for SchemaAwareStoreManager, we do this programmatically. And I believe the
latter is a bit hacky to deal with other issues from the past, that I'm not
particularly aware of.
I'll implement your workaround, but still I fear that this is only the
beginning, if we want to fully support the FederatedStoreManager. But there is
nothing preventing us from having this as an experimental feature.
Cheers, Andi!
> DataNucleus Federated Datastore functionality not used in query
> ---------------------------------------------------------------
>
> Key: ISIS-2020
> URL: https://issues.apache.org/jira/browse/ISIS-2020
> Project: Isis
> Issue Type: Bug
> Components: Core: Objectstore: JDO
> Affects Versions: 1.16.2, 2.0.0-M1
> Reporter: Brian Kalbfus
> Assignee: Andi Huber
> Priority: Major
> Fix For: 2.0.0
>
> Attachments: datanucleus-api-jdo.patch
>
>
> Insert and Update operations work as expected, but query operations operate
> on the primary datastore. I see from stepping through the M1 code that
> Insert and Update operations use a transaction that accesses a
> FederatedDataStore. I guess that is where the difference occurs in that the
> query operations get a data store another way, failing to get the
> FederatedDataStore that is configured.
> example code created from helloworld-archetype is at
> [https://github.com/bkalbfus/isis-federatedDS-2_0_0-M1]
> Mailing list:
> [https://lists.apache.org/thread.html/2edea2f8d802532c3672eddc83b484bbc2e31d1cac16f2759feeb95f@%3Cusers.isis.apache.org%3E]
>
>
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