<div dir="ltr"><div>Do we really need to expose the TransactionManager's UserTransaction implementation?<br><br></div>Looking at the interface, it seems like a subset of TransactionManager, so couldn't we return a custom UserTransaction that just delegates to the TransactionManager?<br>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Feb 7, 2013 at 2:06 PM, Manik Surtani <span dir="ltr"><<a href="mailto:msurtani@redhat.com" target="_blank">msurtani@redhat.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Ok. Then a separate Lookup is what we'd need, I guess. Not pretty, but oh well.<br>
<div class="HOEnZb"><div class="h5"><br>
On 7 Feb 2013, at 11:41, Galder Zamarreño <<a href="mailto:galder@redhat.com">galder@redhat.com</a>> wrote:<br>
<br>
><br>
> On Feb 7, 2013, at 12:31 PM, Manik Surtani <<a href="mailto:msurtani@redhat.com">msurtani@redhat.com</a>> wrote:<br>
><br>
>><br>
>> On 7 Feb 2013, at 11:23, Galder Zamarreño <<a href="mailto:galder@redhat.com">galder@redhat.com</a>> wrote:<br>
>><br>
>>> Hi all,<br>
>>><br>
>>> I'm back with a more food for thought wrt JSR-107 impl. Our CacheManager adapter needs to implement:<br>
>>><br>
>>> UserTransaction getUserTransaction();<br>
>>><br>
>>> The problem there is that there's no standard way of getting a UserTransaction given a JTA TransactionManager.<br>
>>><br>
>>> It really is down to each TransactionManager provider to give a UserTransaction instance (whether JNDI, static…etc).<br>
>>><br>
>>> So, we need a way to lookup a UserTransaction.<br>
>>><br>
>>> One option is to add a getUserTransaction to TransactionManagerLookup, but that will break existing clients.<br>
>><br>
>> You mean it would break existing TML implementations?<br>
><br>
> ^ Yeah, potentially yeah.<br>
><br>
>> Do we know of any custom TML implementations though?<br>
><br>
> Yes:<br>
> - <a href="https://github.com/hibernate/hibernate-orm/blob/master/hibernate-infinispan/src/main/java/org/hibernate/cache/infinispan/tm/HibernateTransactionManagerLookup.java" target="_blank">https://github.com/hibernate/hibernate-orm/blob/master/hibernate-infinispan/src/main/java/org/hibernate/cache/infinispan/tm/HibernateTransactionManagerLookup.java</a><br>
> - <a href="https://github.com/jbossas/jboss-as/blob/master/clustering/infinispan/src/main/java/org/jboss/as/clustering/infinispan/TransactionManagerProvider.java" target="_blank">https://github.com/jbossas/jboss-as/blob/master/clustering/infinispan/src/main/java/org/jboss/as/clustering/infinispan/TransactionManagerProvider.java</a><br>
><br>
>><br>
>>><br>
>>> Alternatively, define a org.infinispan.transaction.lookup.UserTransactionLookup interface which is configurable. We'd then need to implement for existing TML classes.<br>
>>><br>
>>> If anyone has any other ideas, let us know.<br>
>>><br>
>>> Cheers,<br>
>>> --<br>
>>> Galder Zamarreño<br>
>>> <a href="mailto:galder@redhat.com">galder@redhat.com</a><br>
>>> <a href="http://twitter.com/galderz" target="_blank">twitter.com/galderz</a><br>
>>><br>
>>> Project Lead, Escalante<br>
>>> <a href="http://escalante.io" target="_blank">http://escalante.io</a><br>
>>><br>
>>> Engineer, Infinispan<br>
>>> <a href="http://infinispan.org" target="_blank">http://infinispan.org</a><br>
>>><br>
>>><br>
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>><br>
>> --<br>
>> Manik Surtani<br>
>> <a href="mailto:manik@jboss.org">manik@jboss.org</a><br>
>> <a href="http://twitter.com/maniksurtani" target="_blank">twitter.com/maniksurtani</a><br>
>><br>
>> Platform Architect, JBoss Data Grid<br>
>> <a href="http://red.ht/data-grid" target="_blank">http://red.ht/data-grid</a><br>
>><br>
>><br>
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><br>
><br>
> --<br>
> Galder Zamarreño<br>
> <a href="mailto:galder@redhat.com">galder@redhat.com</a><br>
> <a href="http://twitter.com/galderz" target="_blank">twitter.com/galderz</a><br>
><br>
> Project Lead, Escalante<br>
> <a href="http://escalante.io" target="_blank">http://escalante.io</a><br>
><br>
> Engineer, Infinispan<br>
> <a href="http://infinispan.org" target="_blank">http://infinispan.org</a><br>
><br>
><br>
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<br>
--<br>
Manik Surtani<br>
<a href="mailto:manik@jboss.org">manik@jboss.org</a><br>
<a href="http://twitter.com/maniksurtani" target="_blank">twitter.com/maniksurtani</a><br>
<br>
Platform Architect, JBoss Data Grid<br>
<a href="http://red.ht/data-grid" target="_blank">http://red.ht/data-grid</a><br>
<br>
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</div></div></blockquote></div><br></div>