[jboss-jira] [JBoss JIRA] Commented: (AS7-1662) Incorrect resolution of managed bean alternatives for

[Marcus Portmann (JIRA)]

    [ https://issues.jboss.org/browse/AS7-1662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12624712#comment-12624712 ] 

Marcus Portmann commented on AS7-1662:
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The issue I am experiencing is that it is not possible to include the utility library TestCommon in my TestWeb WAR project without specifying an alternative in the beans.xml for the ITestService bean interface. Any web application making use of the shared utility library will not be able to select between the alternative implementations of the ITestService bean interface provided by the TestCommon utility library. 

In the WebSphere CDI implementation it is possible to not specify any alternative in META-INF/beans.xml file that forms part of the TestCommon JAR. As long as an alternative is specified in the WEB-INF/beans.xml file that forms part of the TestWeb WAR all dependencies are resolved correctly.

I am not that familiar with the CDI spec but it seems strange that there is no requirement to allow dependencies to be resolved using the alternatives specified across all the beans.xml files. It is a pity that a consumer of a third party library containing managed beans in JBoss won't be able to select the specific alternative for the managed bean that suits their needs.

> Incorrect resolution of managed bean alternatives for 
> ------------------------------------------------------
>
>                 Key: AS7-1662
>                 URL: https://issues.jboss.org/browse/AS7-1662
>             Project: Application Server 7
>          Issue Type: Bug
>          Components: CDI / Weld
>    Affects Versions: 7.0.1.Final
>         Environment: Mac OS X Version 10.7
>            Reporter: Marcus Portmann
>            Assignee: Stuart Douglas
>             Fix For: 7.0.1.Final
>
>
> Given a JEE EAR project Test that includes a WAR project TestWeb which references a Java project TestCommon as a deployment assembly. 
> In the TestCommon project I have a managed bean named TestService annotated with the @ApplicationScope and @Alternative annotations that implements the interface ITestService. In the TestCommon project I have another managed bean named AnotherTestService that injects the TestService implementation using an @Inject annotation on a private variable of type ITestService.
> In the TestWeb application I have a servlet which injects the TestService implementation using an @Inject annotation on a private variable of type ITestService.
> I have added a beans.xml file to my WEB-INF folder for the TestWeb WAR and declared the TestService class as an alternative.
> I attempted to add a beans.xml file to the META-INF folder under the TestCommon project without any alternative classes specified.
> When I attempt to deploy my application on JBoss 7.0.1 I receive the error "WELD-001408 Unsatisfied dependencies for type [ITestService] with qualifiers [@Default] at injection point [[field] @Inject private absa.test.model.AnotherTestService.testService]".
> It appears that Weld is not using the alternative specified in the WEB-INF/beans.xml file that forms part of the TestWeb WAR. Instead Weld is trying to resolve the alternative only using the META-INF/beans.xml file that forms part of the TestCommon JAR.
> If I add the TestService class as an alternative to the META-INF/beans.xml file that forms part of the TestCommon JAR then the application deploys successfully.
> If I add another alternative implementation for the ITestService interface to the TestCommon JAR project and reference this alternative in the WEB-INF/beans.xml file that forms part of the TestWeb WAR then the servlet is injected with this new implementation. The AnotherTestService though is still injected with the alternative specified in the META-INF/beans.xml file for the TestCommon JAR.
> It appears as if Weld is not overriding the alternative specified in the META-INF/beans.xml file for the TestCommon JAR with the alternative specified in the WEB-INF/beans.xml file that forms part of the TestWeb WAR.
>  

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