[equinox-dev] Why would DS register a component twice?

["John Wells" <jwells@xxxxxxx>]

I have a component I have defined with a factory:

<scr:component
  xmlns:scr="http://www.osgi.org/xmlns/scr/v1.0.0";
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
  name="com.bea.core.adg"
  factory="com.bea.core.adg">
  <implementation
class="com.bea.core.adg.internal.AcyclicalDirectedGraphImpl"/>
  <service>
    <provide interface="com.bea.core.adg.AcyclicalDirectedGraph" />
  </service>
  
  <property 
    name="com.bea.core.adg.name"
    type="String"
    value="dag"/>
</scr:component>

I have another component that is the "manager" for this factory:

<scr:component
  xmlns:scr="http://www.osgi.org/xmlns/scr/v1.0.0";
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
  name="com.bea.core.adgFactory"
  immediate="true">
  <implementation
class="com.bea.core.adg.internal.AcyclicalDirectedGraphManagerImpl"/>
  <service>
    <provide interface="com.bea.core.adg.AcyclicalDirectedGraphManager"
/>
  </service>
  
  <reference name="ComponentFactory"
    interface="org.osgi.service.component.ComponentFactory"
    bind="setComponentFactory"
 
target="(&amp;(component.name=com.bea.core.adg)(component.factory=com.be
a.core.adg))"
    />
</scr:component>

When I call the "create" service in the com.bea.core.adgFactory it ends
up calling the "newInstance" in order to create the first component
(with a name value).

What I am seeing is the component gets created OK, but it is getting
created twice.  I have put println's before and after the newInstance
call, and I have put println's in the "activate" call of the first
component.  This is what I am seeing.  I will number the lines from the
output:

1.  JRW(10) factory before newInstance  <-- println before newInstance
call

2.  INFO: Service REGISTERED: { com.bea.core.adg.name=Good Graph,
component.factory=
com.bea.core.adg, component.name=com.bea.core.adg, component.id=3,
objectClass=[
Ljava.lang.String;@d70d7a, service.id=10 }  <-- from the framework

3.  JRW(10) activation of name Good Graph with id 11240763 <-- activate
println

4. JRW(10) gt setting graph to 11240763 <-- dependency getting injected
in test (using ServiceTracker)

5.  JRW(10) activation of name Good Graph with id 12067688 <-- ?println?
again?

6.  JRW(20) factory after newInstance <-- println after newInstance call


Line 5 is the strange one (and causing me problems)!  Why am I getting
the second activation?  Is it a bug in the implementation, or is there
something I am not understanding about the specification?  I do *not*
think this is a dummy service (since this is using the factory pattern).

Any help would be appreciated.

John Wells (Aziz)
jwells@bea.comNOSPAM
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