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Posted to dev@openwebbeans.apache.org by "Mike Olson (JIRA)" <ji...@apache.org> on 2012/12/27 23:10:12 UTC

[jira] [Created] (OWB-742) @Alternative is ignored when using the Provider interface.

Mike Olson created OWB-742:
------------------------------

             Summary: @Alternative is ignored when using the Provider interface.
                 Key: OWB-742
                 URL: https://issues.apache.org/jira/browse/OWB-742
             Project: OpenWebBeans
          Issue Type: Bug
            Reporter: Mike Olson


  I have a very simple setup where I have classes Foo1 and Foo2 that implement the Foo interface

public interface Foo {
}
@Default
public class Foo1 implements Foo {

}
@Alternative
public class Foo2 implements Foo {

}

Then a class that gets 2 Foos injected

public class Main {

    @Inject
    Foo fooA;

    @Inject
    Provider<Foo> fooB;

    @PostConstruct
    public void init() {
        System.err.println("FooA:" + fooA);
        System.err.println("FooB:" + fooB.get());
    }
}

If my beans.xml file is empty, then I get 2 instances of Foo1 injected into the class, as expected.

However, if I add

    <alternatives>
        <class>Foo2</class>
    </alternatives>

to my beans.xml, then I get an error when I run the application.

"""
INFO: All injection points were validated successfully.
Dec 26, 2012 9:11:29 PM org.apache.webbeans.lifecycle.AbstractLifeCycle startApplication
INFO: OpenWebBeans Container has started, it took [359] ms.
FooA:Foo2@152c4d9
Dec 26, 2012 9:11:29 PM org.apache.webbeans.component.AbstractInjectionTargetBean postConstructDefault
SEVERE: An error occurred while executing [@PostConstruct.]
javax.enterprise.inject.AmbiguousResolutionException: There is more than one api type with : Foo with qualifiers : Qualifiers: [@javax.enterprise.inject.Default()]
found beans:
Foo1, Name:null, WebBeans Type:MANAGED, API Types:[Foo,Foo1,java.lang.Object], Qualifiers:[javax.enterprise.inject.Any,javax.enterprise.inject.Default]
Foo2, Name:null, WebBeans Type:MANAGED, API Types:[Foo,java.lang.Object,Foo2], Qualifiers:[javax.enterprise.inject.Any,javax.enterprise.inject.Default]
    at org.apache.webbeans.util.InjectionExceptionUtils.throwAmbiguousResolutionExceptionForBeans(InjectionExceptionUtils.java:121)
    at org.apache.webbeans.util.InjectionExceptionUtils.throwAmbiguousResolutionException(InjectionExceptionUtils.java:111)
    at org.apache.webbeans.container.ResolutionUtil.checkResolvedBeans(ResolutionUtil.java:80)
    at org.apache.webbeans.inject.instance.InstanceImpl.get(InstanceImpl.java:110)
    at Main.init(Main.java:23)
"""

This exception happens when I call Provider.get().  I assumed that the Provider interface would respect the Alternative Qualifiers, but that does not seem to be the case.


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