Re: Service creating another service

[Achim Huegen]

This would mean, that the factory B is responsible for creating two 
services at once: an instance of Q and an instance of A. This is be a 
rather uncommon use of a service implementation factory. It is be possible 
to do, but the factory needs its own schema like BuilderFactory or 
BeanFactory.

What about defining the service A which should be used by Q as a separate 
service point?
That way it would work 'out of the box'. No need for a 
ServiceImplementationFactory:

service-point (id=AForQ interface=A)
{
        invoke-factory (service-id=hivemind.BuilderFactory)
        {
                construct (class=AImpl)
                {
                        set (property=one value=foo)
                        set (property=two value=foo)
                        set (property=three value=foo)
                }
        }
}
service-point (id=Q interface=Q)
{
        invoke-factory (service-id=hivemind.BuilderFactory)
        {
                construct (class=QImpl)
                {
                        set-service (property=A service-id=AForQ)
                }
        }
}
Achim Huegen

Am Sun, 11 Jul 2004 11:47:47 -0400 schrieb Kurt R. Hoehn 
<[EMAIL PROTECTED]>:

No problem.
I'm using the EJBProxy as a model or example to build my own service.  
My service has nothing to do with EJBProxy. Service A
    attribute one is a required string
    attribute two is a required string
    attribute three is a required string

Service B implements org.apache.hivemind.ServiceImplementationFactory
    attribute one is a required string
    attribute two is required Service A
service-point (id=Q interface=com.myinterface.Q )
{
    invoke-factory (service-id=B)
    {
        parameters ( one=default two=??? )
    }
}
Main Program
        Registry registry = RegistryBuilder.constructDefaultRegistry();
        Q q = (Q)registry.getService("Q", Q.class);
         A a = q.getA();
Attribute two in service Q is service A and that service has 3 
attributes that need to be set, what is the syntax to set those 3 
attributes?

HTH,
-kurt h
Achim Huegen wrote:
I don't think I'm understanding your problem.
Do you just need more information on using the name-lookup-service 
attribute?
Maybe you could rephrase your question?

Achim Huegen
Am Sat, 10 Jul 2004 12:18:29 -0400 schrieb Kurt R. Hoehn 
<[EMAIL PROTECTED]>:

Hello,
    I'm trying to create a service factory that takes another service 
as a parameter.  All the services get registered but when I try to use 
the service factory I have no idea how to get the parameters to the 
service that is a parameter to the service factory.  I'm using the 
EJBProxy service as a model but the documentation

 invoke-factory (service-id=hivemind.lib.EJBProxy)
  {
    parameters (home-interface=... jndi-name=... 
name-lookup-service=...)
  } "..." does little good on how to set the parameters of 
name-lookup-service.

If someone could enlighten me on how this is done I would greatly 
appreciate it.  I would then like to put together a demo of what I'm 
trying to do, which is create an implementation of Apache OJB in 
Hivemind.

TIA,
kurt h.
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