[jboss-as7-dev] Level for add operations

[Brian Stansberry]

On 1/20/11 10:06 AM, Kabir Khan wrote:
> For the threads subsystem I register a description provider at profile =>  test =>  subsystem =>  threads. For that node I have an ADD_THREAD_FACTORY operation which implements ModelAddOperationHandler. I can then invoke that operation for the address profile =>  test =>  subsystem =>  threads to add a ThreadFactory. However, if I add more than one ThreadFactory, the last overwrites the previous, meaning I can only have one ThreadFactory.
>
> What I originally had in mind was to register this add handler at profile =>  test =>  subsystem =>  threads =>  threadfactory =>  * , but when I try to invoke the operation for the address profile =>  test =>  subsystem =>  threads =>  threadfactory =>  threadfactoryA it fails since the model controller does not find the operation since that node does not exist yet (that node is what I am trying to add)
>

This approach is what's intended; I'll think a bit about what the 
problem is.

> So, in a nutshell, I am unsure how to properly handle add operations.
>
> Also, when parsing the xml into add operations I need the address that the add operation should apply to, where can I get that? At the moment I am just hard-coding it

The parent address should be parsed into the parsing method. The parser 
creates the operation address as follows:

Option A)

op.get(OP_ADDR).set(parentAddress).add("childtype", name);

Option B) -- if you need a ref to the new address

ModelNode address = parentAddress.clone().add("childtype", name);
op.get(OP_ADDR).set(address);


In Option A the set() call copies parentAddress, so it's safe to mutate 
it via the add().

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-- 
Brian Stansberry
Principal Software Engineer
JBoss by Red Hat