Error defining CDI Alternatives on AS7

[wilsonguimaraes]

Hi,

We're testing an app with CDI Alternatives and the following error is shown during the deployment:

ERROR [org.jboss.msc.service.fail] (MSC service thread 1-3) MSC00001: Failed to start service jboss.deployment.unit."jboss-alternatives-scenario1-webapp.war".WeldService: org.jboss.msc.service.StartException in service jboss.deployment.unit."jboss-alternatives-scenario1-webapp.war".WeldService: org.jboss.weld.exceptions.DeploymentException: WELD-001408 Unsatisfied dependencies for type [MyAlternativeInterface] with qualifiers [@Default] at injection point [[field] @Inject private examples.MyBean.alternative]

    at org.jboss.as.weld.services.WeldService.start(WeldService.java:96)

    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1765)

    at org.jboss.msc.service.ServiceControllerImpl$ClearTCCLTask.run(ServiceControllerImpl.java:2291)

    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_26]

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_26]

    at java.lang.Thread.run(Thread.java:680) [:1.6.0_26]

Caused by: org.jboss.weld.exceptions.DeploymentException: WELD-001408 Unsatisfied dependencies for type [MyAlternativeInterface] with qualifiers [@Default] at injection point [[field] @Inject private examples.MyBean.alternative]

    at org.jboss.weld.bootstrap.Validator.validateInjectionPoint(Validator.java:270)

    at org.jboss.weld.bootstrap.Validator.validateBean(Validator.java:106)

    at org.jboss.weld.bootstrap.Validator.validateRIBean(Validator.java:129)

    at org.jboss.weld.bootstrap.Validator.validateBeans(Validator.java:351)

    at org.jboss.weld.bootstrap.Validator.validateDeployment(Validator.java:336)

    at org.jboss.weld.bootstrap.WeldBootstrap.validateBeans(WeldBootstrap.java:404)

    at org.jboss.as.weld.WeldContainer.start(WeldContainer.java:82)

    at org.jboss.as.weld.services.WeldService.start(WeldService.java:89)

    ... 5 more

The scenario being tested (https://github.com/zyc/jboss-as7-lab/tree/master/alternatives/scenario1) is the following:

• One project called cdijar that defines an interface (MyAlternativeInterface.java), a bean (MyBean.java) with an injected MyAlternativeInterface property and an empty beans.xml.
• Another project, called webapp, that has cdijar as a dependency. On this project there are an alternative implementation for MyAlternativeInterface (MyAlternative.java), a managed bean where MyBean is injected (MyManagedBean.java), the beans.xml activating the alternative and  index.xhtml with a button that calls MyManagedBean in order to print a message on console.

Any ideas on what's happening?

Best regards,

Cleverson Sacramento

Wilson Guimarães

[nickarls]

If it works on AS6 it might be a deployment structure thing that manifests as https://issues.jboss.org/browse/WELD-912

[swd847]

You have to define the alternative in the beans.xml of the module that wants to inject it, in this case the cdi jar, AS6 did not follow the spec in this regard.

[wilsonguimaraes]

Stuart,

If I have to define the alternative in the module's beans.xml, what's the point of having alternatives? I mean: suppose that I've created a library jar and one of its classes injects an interface. This interface could be implemented by a number of alternatives that gives the developer the possibility to choose which one to use during deploying time.

Wilson

[swd847]

That is why we created @DefaultBean is seam solder, hopefully this will be fixed in the next version of the spec.

[mpavleski]

Hi all,

I'm having the same problem as Wilson since AS 7. The same package was working on AS 6. What is the point of having alternatives if i need to edit beans.xml inside JARs for the alternatives, for each alternative we have in the project.

[danielmeyer]

My current workaround on AS7 is to remove the @Alternative annotation using seam-xml.

[cleverson.sacramento]

I'm having the same problem, but I can't be dependent on any specific vendor (e.g. JBoss Seam)