[jboss-jira] [JBoss JIRA] Created: (AS7-1971) Better base class for write-attribute handlers

[Brian Stansberry (JIRA)]

Better base class for write-attribute handlers
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                 Key: AS7-1971
                 URL: https://issues.jboss.org/browse/AS7-1971
             Project: Application Server 7
          Issue Type: Task
          Components: Domain Management
            Reporter: Brian Stansberry
            Assignee: Brian Stansberry
             Fix For: 7.1.0.Beta1


ServerWriteAttributeOperationHandler isn't a very nice base for a write-attribute handler. 

1) It does stuff in Stage.MODEL (validateResolvedValue()) that should be in Stage.RUNTIME.
2) It forces subclasses to register a Stage.RUNTIME handler, instead of providing that for them.
3) It doesn't provide very good support for handling rollbacks of runtime changes.
4) It's in the server module instead of controller. 

I'm going to add a new AbstractWriteAttributeHandler in controller, deprecate ServerWriteAttributeOperationHandler, and convert all existing uses of it in the AS code base.

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