[ https://issues.jboss.org/browse/CDI-686?page=com.atlassian.jira.plugin.sy... ] Xavier Dury commented on CDI-686: --------------------------------- On my project, {{@Produces}} is used to integrate objects which are not CDI-aware (coming from other pure java libraries) with CDI beans as long as they provide an interface if they need to be proxied ({{@ApplicationScoped}}). The only problem I had before CDI 2.0 was that it wasn't possible to apply {{@Interceptor}} on those objects. I thought that {{InterceptionFactory}} would fix the problem but the fact that it can't be parameterized with an interface is very limiting. My use-case is the following: {code:java} public interface ExternalService { /* some methods */ } /* This implementation is not a CDI-bean, it is final (cannot be proxied) and has no default constructor or @Injected constructor. */ public final class ExternalServiceImplementation implements ExternalService { public ExternalServiceImplementation(/* some dependencies */) { ... } /* methods implementations */ } @ApplicationScoped public class Integrator { @Produces @ApplicationScoped public ExternalService externalService(/* some dependencies */) { return new ExternalServiceImplementation(/* some dependencies */); // This works as a proxy is created from the interface, not the implementation's class } } {code} Now, if I want to add transaction management to my object, I would change my code to: {code:java} @ApplicationScoped public class Integrator { @Produces @ApplicationScoped public ExternalService externalService(InterceptionFactory<ExternalService> factory, /* some dependencies */) { factory.configure().add(new TransactionalLiteral()); return factory.createInterceptedInstance(new ExternalServiceImplementation(/* some dependencies */)); } } {code} But this does not work with the following message (in Weld): {code} WELD-001711: InterceptionFactory is not supported on interfaces. Check InterceptionFactory<external.ExternalService> {code} If I declare InterceptionFactory<ExternalServiceImplementation> instead, I get the following error: {code} WELD-001437: Bean type class external.ExternalServiceImplementation is not proxyable because it is final {code} -- This message was sent by Atlassian JIRA (v7.5.0#75005)