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copied!<p>This is my final approach:</p> <p>I spend a PostConstruct method to my MessageDispachter where I look for all message handler beans. For each of these beans I get their annotation value and a reference to the bean (which also includes creation of the bean). Then I store both, the annotation value and the bean reference into my messageHandlerMap. There is a lot of CDI delegating and interception involved, but it works:</p> <pre><code>public class MessageDispatcher { private Map<String, MessageHandler> messageHandlerMap = new HashMap<String, MessageHandler>(); @Inject DefaultMessageHandler defaultMessageHandler; @Inject BeanManager beanManager; @PostConstruct public void registerHandlers() { Set<Bean<?>> messageHandlerBeans = beanManager.getBeans(MessageHandler.class, new MessageTypeLiteral()); for (Bean<?> bean : messageHandlerBeans) { String key = bean.getBeanClass().getAnnotation(MessageType.class).value(); if (!key.isEmpty()) { CreationalContext<?> creationalContext = beanManager.createCreationalContext(bean); MessageHandler messageHandler = (MessageHandler) beanManager.getReference(bean, MessageHandler.class, creationalContext); messageHandlerMap.put(key, messageHandler); } } } public MessageHandler getMessageHandler(String key) { MessageHandler messageHandler = (MessageHandler) messageHandlerMap.get(key); return messageHandler != null ? messageHandler : defaultMessageHandler; } } @Documented @Qualifier @Retention(RUNTIME) @Target({TYPE, METHOD, FIELD, PARAMETER}) public @interface MessageType { @Nonbinding String value(); } @SuppressWarnings("all") public class MessageTypeLiteral extends AnnotationLiteral<MessageType> implements MessageType { private static final long serialVersionUID = 1L; @Override public String value() { return ""; } } public class DefaultMessageHandler implements MessageHandler { @Inject ResourceBundleProvider resourceBundleProvider; @Override public void processMessage(String inputMesssage) { ... @MessageType("first") public class FirstMessageHandler implements MessageHandler { @Inject ResourceBundleProvider resourceBundleProvider; @Override public void processMessage(String inputMesssage) { ... </code></pre> <p>The <code>@NonBinding</code> annotation in the <code>@MessageType</code> annotation seems to be important to find all beans annotated with <code>@MessageType("xxx")</code> independent of the actual annotation value (here: xxx).</p> <p>I hope this explains the important things. For further details please ask me</p> <p>Sebastian</p>

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