Re: where can I find a sample code demonstrating how to lookup a service in fortress

[Mu Mike]

Thank you. And:

1) All components must have the attribute id="unique.name" which is used 
if
   the component is looked up via a Selector (in Fortress you can use a 
selector
   or the more direct "ROLE/hint" idiom).  If the configuration element 
does not
   have the "id" attribute, then the container assumes that information 
is not
   for any components.


when you said  " looked up via a Selector", did you mean that the 
ServiceManager does it automatically? that is, I dont need to care about if 
it is a manager or a selector is looking up a service 'component'?

for example, I have the below roles file and xconf file

<?xml version="1.0"?>
<role-list>
 <role name="Runner"  
   <component shorthand="DefaultRunner"
              class="DefaultRunner"
              />
   <component shorthand="AnotherRunner"
              class="AnotherRunner"
              />
 </role>   
</role-list>

<my-system>
 <AnotherRunner id="Another"/>
 <DefaultRunner id="Default"/>
</my-system>
now I need a Runner implementaion, I did this

myServiceManager.lookup(Runner.ROLE);(Runner.ROLE="Runner"):

it returns me an AnotherRunner, but what if I need a DefaultRunner? what 
shall I do then?

you know in ECM ,we wrote the roles file this way:

 <role
   name="Runner"
   shorthand="runner"
   
default-class="org.apache.avalon.excalibur.component.ExcaliburComponentSelector">

   <hint shorthand="anotherRunner" class="AnotherRunner"/>
   <hint shorthand="defaultRunner" class="DefaultRunner"/>
 </role>
when I did this: 
mySelector=(ExcaliburComponentSelector)myECM.lookup(Runner.ROLE); it 
returned me an ExcaliburComponentSelector,and I can then get,for example, 
an AnotherRunner instance like this: 

AnotherRunner runner=(AnotherRunner)mySelector.select("anotherRunner");

can you tell me how to achieve this in fortress?

And, where can I find complete roles file and xconf file examples? I guess 
they are of great use for a beginner like me

Thanks
Mike
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