[jboss-as7-dev] (XA)Datasources subresources and use cases

[Brian Stansberry]

This sounds fine.

On 10/20/11 6:53 AM, Stefano Maestri wrote:
> I was forgetting:
> of course parser will take care of all the steps
>       parse->create ds disabled->add subresources->enable ds
> making it invisible to users.
>
> regards
> S.
> On 10/20/2011 01:47 PM, Stefano Maestri wrote:
>> Hi all,
>>
>> I've recently worked on adding subresources for configuration properties
>> to resource-adapters and now I'm working on datasources and xa-datasources.
>> While a pure subresources approach is working out of the box for RAs,
>> since add operations work only on DMR and services and runtime metadata
>> information are created during rar deployment, it's not the same for
>> (xa)DS. Here add operation effectively deploy the datasources, so adding
>> properties as subresources comes after effective deployment.
>> IOW the subresources can't be used during runtime creation of a
>> datasource, but only during parsing. Having connection-properties and
>> xa-datasource-properties as subresources should make easier and more
>> standard to add/remove them.
>>
>> Since currently we are supporting datasource creation from console and
>> cli and since I think it's a wanted feature I have a proposal to make it
>> possible also with subresources.
>>
>> Basically the idea is to use the current enable/disable status to make
>> possible to edit a datasource. Datasource are always created disabled
>> (boolean parameter enable will be removed from add operation), and
>> permit to add/remove subresource in this status. Then console/cli have
>> to enable the datasource making it available and registered in jndi.
>> It's not possible to edit a datasource enabled, it must be disabled
>> first. Of course this approach could be extended not only to
>> subresources, but also to all editable field that currently require a
>> server reload.
>>
>> comments or problem you can see in this approach?
>>
>> regards
>> S.
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>
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-- 
Brian Stansberry
Principal Software Engineer
JBoss by Red Hat