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http://issues.apache.org/jira/browse/HIVEMIND-72?page=comments#action_12425732
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Knut Wannheden commented on HIVEMIND-72:
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Now (HiveMind version 1.2) that there are assembly instructions (i.e.
<assembly> elements) this issue can almost be closed I believe. The only thing
missing is probably a versatile service implementation factory. Besides
retrieving the core service implementation using a method of another service
(as you propose) it could be useful to retrieve it from an object provider. E.g.
<invoke-factory service-id="hivemind.library.ObjectProviderFactory">
<instance object="service-property:MyServiceA:serviceB"/>
<assembly>
<listener service-id="hivemind.ShutdownCoordinator"/>
</assembly>
</invoke-factory>
> BuilderFactory extension
> ------------------------
>
> Key: HIVEMIND-72
> URL: http://issues.apache.org/jira/browse/HIVEMIND-72
> Project: HiveMind
> Issue Type: Improvement
> Components: framework
> Reporter: Istvan Orban
> Priority: Minor
> Attachments: FactoryObjectProvider.java,
> FactoryObjectProviderTest.java
>
>
> Hi,
> I asked about this thing on the mailing list, since it was not a bad idea I
> though it's best to create here.
> If you have a service (B) which can only be instanciated by an other
> factory service (A). you have to write your own factory class which
> implements the
> ServiceImplementationFactory. I have seen some example of doing it.
> I think this is a general problem that. the BuilderFactory should not
> instance the class by calling it's contructor but to call an other
> service's method.
> would extending the BuilderFactory be a good idea on the following way.
> <invoke-factory service-id="hiveMind:BuilderFactory">
> <construct class="MyServiceB"
> contructor-service-id="MySerciceA" constructor-method="createServiceB">
> .....
> <event-listener
> service-id="hivemind.ShutdownCoordinator"/>
> </construct>
> </invoke-factory>
> with these extra tags one could specify which method of the MyServiceA
> returns an instance of the MyServiceB
> so I can use all the power of the Configuration and Autowite provided
> already by the the BuilderFactory etc.
> I'm asking this because I have seen examples (providing hivernate
> session and transaction stuff) where they just implemented the
> 'ServiceImplementationFactory' but then you have to write again all the
> cool function which does the autowite and all other cool stuff for you....
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