Hi Peter:
See notes in-line.
[EMAIL PROTECTED] wrote:
Hi, we are looking a bit closer at the service configuration of Merlin. It seems that every component get's it's own ServiceManager that provides the declared dependencies to the component.
Is there a way to look up components at runtime, e.g. by
"container/component", that are not in the ServiceManager?
No.
The keys handled by the the service manager are aligned directly with the @avalon.dependency tags for the component to which the service manager is assigned.
Or is JNDI etc. used for that?
It seems that in the block.xml you can only override already declared dependencies, not insert any new ones?
Correct.
If you were inserting new deependecies - you would do this at the level of the type (i.e. under the xinfo - or equivalent @avalon.dependency). If your component needs to aquire something dynamic - then your component should be declaring a dependency on some application specific finder service. The implementation of that finder service could do some intertesting things with an embedded kernel - but that's another thread.
How can you add a dependency after the SM is finished (e.g. when the configuration on a component is called?)
You cannot - you can only get the depedency you declare at the level of the type.
This is intentional - if you want to step outside of this constraint you need to be thinking about a service that provides the discovery semantics that you are thinking of.
What is the "discovery scenario" your dealing with?
Cheers, Steve.
Thanks
/peter
------------ Peter Neubauer Software Manager ScanCoin AB J�gershillgatan 26 213 75 Malm� /Sweden
Phone: +46 40 6000 687
mail: [EMAIL PROTECTED]
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Stephen J. McConnell mailto:[EMAIL PROTECTED]
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