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https://issues.apache.org/jira/browse/JCR-2578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jukka Zitting updated JCR-2578:
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Attachment: JCR-2578.patch
Proposed patch.
> Deprecate XASession
> -------------------
>
> Key: JCR-2578
> URL: https://issues.apache.org/jira/browse/JCR-2578
> Project: Jackrabbit Content Repository
> Issue Type: Improvement
> Components: jackrabbit-api, jackrabbit-core, jackrabbit-jca,
> transactions
> Reporter: Jukka Zitting
> Attachments: JCR-2578.patch
>
>
> The XASession interface in jackrabbit-api extends Session with a single
> getXAResource() method. The idea is that a transactional client (or a
> transaction manager) will test whether a session implements XASession and can
> then get the XAResource instance that can be used to bind the session to a
> distributed transaction. The essential code is:
> if (session instanceof XASession) {
> return ((XASession) session).getXAResource();
> }
> This works fine except for the extra dependency to jackrabbit-api that it
> introduces in code that otherwise would only need the JCR API. Since the link
> between a transaction-enabled session and the related XAResource instance is
> always one-to-one, we could avoid this dependency by making the session
> directly implement XAResource, leading to code like this:
> if (session instanceof XAResource) {
> return (XAResource) session;
> }
> This is essentially what jackrabbit-jcr-rmi did in 2.0.0 to avoid the
> jackrabbit-api dependency while maintaining XA transaction support, and I'd
> like to extend this solution also to other parts of Jackrabbit.
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