Injecting / autowiring collection provider [to implement contribution]

Hi, I've used spring from long time and I really like that Spring from version 2.5 started using annotations.

I implement contributions for my application and I found inconsistent behaviour for Provider/ObjectFactory. There are defined classes for different contributions:

Code:

---

@Contribute("rest")
@Named("bean-contrib2a")
public class Contrib2A implements ContribRest { ... }

@Contribute("rest")
@Named("bean-contrib2b")
public class Contrib2B { ... }

@Contribute("non-rest")
@Named("bean-contrib3a")
public class Contrib3A implements ContribRest { ... }

@Contribute("non-rest")
@Named("bean-contrib3b")
public class Contrib3B { ... }

---

Code to show injecting scenario looks like that:

Code:

---

@Named("applicationRest")
public class ApplicationRest extends Application {

    private List<ContribRest> contrib2;
    private List<ContribRest> contrib4;

    private ObjectFactory<List<ContribRest>> ofContrib2;
    private ObjectFactory<List<ContribRest>> ofContrib4;

    private Provider<List<ContribRest>> pvdContrib2;
    private Provider<List<ContribRest>> pvdContrib4;

    @Inject
    public void setContrib2(@Contribute("rest") List<ContribRest> contrib2) {
        this.contrib2 = contrib2;
    }

    @Autowired(required = false)
    public void setContrib4(@Contribute("other") List<ContribRest> contrib4) {
        this.contrib4 = contrib4;
    }

    @Inject
    public void setOfContrib2(@Contribute("rest") ObjectFactory<List<ContribRest>> ofContrib2) {
        this.ofContrib2 = ofContrib2;
    }

    @Autowired(required = false)
    public void setOfContrib4(@Contribute("other") ObjectFactory<List<ContribRest>> ofContrib4) {
        this.ofContrib4 = ofContrib4;
    }

    @Inject
    public void setPvdContrib2(@Contribute("rest") Provider<List<ContribRest>> pvdContrib2) {
        this.pvdContrib2 = pvdContrib2;
    }

    @Autowired(required = false)
    public void setPvdContrib4(@Contribute("other") Provider<List<ContribRest>> pvdContrib4) {
        this.pvdContrib4 = pvdContrib4;
    }

---

Injection finish with that result:

Code:

---


INFO contrib2=[Contrib2A@51a19458] -
INFO contrib4=null
ERROR ofContrib2=No unique bean of type [java.lang.Object] is defined: expected single matching bean but found 2: [bean-contrib2b, bean-contrib2a]
INFO ofContrib4=null
ERROR pvdContrib2=No unique bean of type [java.lang.Object] is defined: expected single matching bean but found 2: [bean-contrib2b, bean-contrib2a] -
INFO pvdContrib4=null

---

Injecting list looks correct - classes with other contribution and type are filtered and only Contrib2A is injected. Unfortunately injecting Provider or ObjectFactory tries to inject List a not all beans for this list.

Is it bug in injecting Provider/ObjectFactory or expected behaviour? How is it guaranteed to work in future?

Even I can accept that it is searching list with specified name but how can I provide this list with all instances contributed (scanned) without manually defining list in XML.

BR//Kamil Demecki