[weld-issues] [JBoss JIRA] (WELD-592) Support use of decorator of Callable<T>

Support use of decorator of Callable<T> --------------------------------------- Key: WELD-592 URL: https://issues.jboss.org/browse/WELD-592 Project: Weld Issue Type: Feature Request Components: Java SE Support Reporter: Elias Ross Assignee: Peter Royle Fix For: TBC Decorator exists for Runnable. Should allow for Callable<T> to be used as well. This is actually pretty useful, for example if you want to execute under a temporary new scope in the same thread, e.g. @Inject Instance<PaymentProcessor> paymentProcessorSource; // which implements Callable<Result> Result result = paymentProcessorSource.get().call(); Or, in the case of a thread pool, you can use Future<T> etc. /** * Decorator for all beans which implements Callable. It intercepts the call * to the call() method to set up the ThreadContext for the new thread so that * instances of @ThreadScoped beans can be correctly resolved. */ @Decorator public class CallableDecorator<T> implements Callable<T> { @Inject @Delegate Callable<T> callable; /** * Set up the ThreadContet and delegate. */ public T call() { // set up context for this thread final ThreadContext threadContext = WeldSEBeanRegistrant.THREAD_CONTEXT; threadContext.setBeanStore(new HashMapBeanStore()); threadContext.setActive(true); // run the original thread try { return callable.call(); } finally { threadContext.destroy(); } }