[jboss-user] [Microcontainer] - Re: Attachments eligible for being passed to the deployers?

[jaikiran]

"alesj" wrote : 
  | 
  | Your #3 deployer is not a component deployer.
  | 
That's correct.

"alesj" wrote : 
  | Your #2 puts attachment into component,
  | hence it's only component deployers that can see that.
  | 

Any specific reason for this special treatment? Because after all that is a simple attachment (and not a component) and hence i was considering that it would be visible to non-component deployers.

"alesj" wrote : 
  | Component deployers should mostly consume attachments
  | not creating them - hence the name "component". ;-)
And i thought the name "component" was because they work on components rather than what output they generate :)

So would that mean, the attachment generated by a component deployer is of no pratical use to non-component deployers?

So would this be a clean way of doing things in a component deployer:


  | public void deploy(DeploymentUnit unit) throws DeploymentException
  |    {
  |       logger.info("Deploying unit : " + unit);
  | 
  | 	// Am i deploying a component?
  | 	if (unit.isComponent())
  | 	{
  | 		// yes, i am deploying a component
  | 		...
  | 		// should my attachments be visible to non-component deployers?
  | 		if (shouldMyAttachmentsBeVisibleToAll())
  | 		{
  | 			// should be visible to all, so add to parent
  | 			unit.getParent().addAttachment(something,someotherthing);
  | 		} 
  | 		else
  | 		{
  | 			// only to component deployers
  | 			unit.addAttachment(something,someotherthing);
  | 		}		
  | 
  | 	}
  | 
  |    }



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