Re: [Fwd: Re: Lifecycle Help]

[Geoff Howard]

J Aaron Farr wrote:

On Sat, 2003-07-12 at 22:03, Geoff Howard wrote:
 

Follow up:

Is the order of component initialization a reliable contract with the
Container?  If component A is defined before component B, can it be
relied on that they are initialize()-ed first A then B?
Geoff
   

Are you asking how to know what order components are initialized by the
container?  This depends on the lifestyle of the component and on the
container itself.
 

Actually, I asked both questions!

However in terms of component assembly (which is what I think you're
asking about), if you access _any_ component via the ServiceManager, it
goes through the proper lifecycle methods before it is returned.  In
other words:
 

...

The 'b' instance of ComponentB will be properly initialized before it is
returned.  In this case you don't need to worry about component
initialization order.  You only need to worry about cyclic dependency
loops.
 

And that's the good news I was hoping for - better than relying on 
load-order. 

I'm not sure how well ECM handled all of this, but all the newer
containers should handle this without any trouble.
It seems to be working that way under ECM, but I just hadn't seen it 
documented, and I tracing the lifecycle stuff through the code was too 
hard to follow with any confidence.

Thanks!

Geoff

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