[seam-commits] Seam SVN: r11143 - branches/community/Seam_2_1/src/main/org/jboss/seam/jms.

Author: dan.j.allen Date: 2009-06-12 17:21:33 -0400 (Fri, 12 Jun 2009) New Revision: 11143 Removed: branches/community/Seam_2_1/src/main/org/jboss/seam/jms/ContextualMessageHandlerRequest.java branches/community/Seam_2_1/src/main/org/jboss/seam/jms/ContextualMessageHandlerRequestInterceptor.java Log: rollback. turns out we don't need this stuff. need to update docs so people don't get confused again. Deleted: branches/community/Seam_2_1/src/main/org/jboss/seam/jms/ContextualMessageHandlerRequest.java =================================================================== --- branches/community/Seam_2_1/src/main/org/jboss/seam/jms/ContextualMessageHandlerRequest.java 2009-06-12 13:14:06 UTC (rev 11142) +++ branches/community/Seam_2_1/src/main/org/jboss/seam/jms/ContextualMessageHandlerRequest.java 2009-06-12 21:21:33 UTC (rev 11143) @@ -1,161 +0,0 @@ -package org.jboss.seam.jms; - -import java.lang.reflect.ParameterizedType; - -import javax.jms.JMSException; -import javax.jms.Message; -import javax.jms.TextMessage; - -import org.jboss.seam.Component; -import org.jboss.seam.async.AbstractDispatcher; -import org.jboss.seam.bpm.BusinessProcess; -import org.jboss.seam.contexts.Contexts; -import org.jboss.seam.contexts.Lifecycle; -import org.jboss.seam.core.Init; -import org.jboss.seam.log.LogProvider; -import org.jboss.seam.log.Logging; - -/** - * <p> - * A class which provides a contextual-thread context for message-driven beans - * in the scope of which Seam components can be instantiated and invoked. - * </p> - * - * <p> - * NOTE: Users are still likely to get the error reported in <a - * href="https://jira.jboss.org/jira/browse/EJBTHREE-898">EJBTH... if a - * transaction operation is performed in the message handler. - * </p> - * - * @author Dan Allen - */ -public abstract class ContextualMessageHandlerRequest<T> -{ - private static transient final LogProvider log = Logging.getLogProvider(ContextualMessageHandlerRequest.class); - - private Message message; - private boolean setupRequired = false; - private Object result = null; - private T delegate; - - public ContextualMessageHandlerRequest(Message message) - { - this.message = message; - this.setupRequired = !Contexts.isApplicationContextActive() && !Contexts.isEventContextActive(); - } - - public void run() throws Exception - { - setup(); - try - { - process(); - } - finally - { - cleanup(); - } - } - - public abstract void process() throws Exception; - - protected void setResult(Object result) - { - this.result = result; - } - - public T getDelegate() - { - return delegate; - } - - public Object getResult() - { - return result; - } - - public Message getMessage() - { - return message; - } - - /** - * A convenience method to return the message as a TextMessage. If the - * message is not a TextMessage, a null value is returned. - */ - public TextMessage getTextMessage() - { - return message instanceof TextMessage ? (TextMessage) message : null; - } - - @SuppressWarnings("unchecked") - private void setup() - { - if (setupRequired) - { - Lifecycle.beginCall(); - } - - Contexts.getEventContext().set(AbstractDispatcher.EXECUTING_ASYNCHRONOUS_CALL, true); - if (Init.instance().isJbpmInstalled()) - { - setupProcessOrTask(); - } - - Class<T> delegateClass = getDelegateClass(); - if (delegateClass != null) - { - delegate = (T) Component.getInstance(delegateClass); - } - } - - private void setupProcessOrTask() - { - try - { - Long taskId = message.getLongProperty("taskId"); - if (taskId != null) - { - BusinessProcess.instance().resumeTask(taskId); - return; - } - } - catch (JMSException e) - { - log.debug("Could not retrieve taskId from message object: " + e.getMessage()); - } - - try - { - Long processId = message.getLongProperty("processId"); - if (processId != null) - { - BusinessProcess.instance().resumeProcess(processId); - return; - } - } - catch (JMSException e) - { - log.debug("Could not retrieve processId from message object: " + e.getMessage()); - } - } - - private void cleanup() - { - Contexts.getEventContext().remove(AbstractDispatcher.EXECUTING_ASYNCHRONOUS_CALL); - if (setupRequired) - { - Lifecycle.endCall(); - } - } - - /** - * Get the type specified in the type parameter of the class. TODO This could - * be made safer - */ - @SuppressWarnings("unchecked") - public Class<T> getDelegateClass() - { - return (Class<T>) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0]; - } -} Deleted: branches/community/Seam_2_1/src/main/org/jboss/seam/jms/ContextualMessageHandlerRequestInterceptor.java =================================================================== --- branches/community/Seam_2_1/src/main/org/jboss/seam/jms/ContextualMessageHandlerRequestInterceptor.java 2009-06-12 13:14:06 UTC (rev 11142) +++ branches/community/Seam_2_1/src/main/org/jboss/seam/jms/ContextualMessageHandlerRequestInterceptor.java 2009-06-12 21:21:33 UTC (rev 11143) @@ -1,44 +0,0 @@ -package org.jboss.seam.jms; - -import javax.interceptor.AroundInvoke; -import javax.interceptor.InvocationContext; -import javax.jms.Message; - -/** - * <p> - * An interceptor which is intented to be applied to message-driven beans to - * setup a Seam request life cycle within the boundaries of the bean's method - * calls so Seam components can be instantiated and invoked. - * </p> - * - * <p> - * TODO It would be nice to bake in an exception callback like the async - * integration supports - * </P> - * - * @author Dan Allen - */ -public class ContextualMessageHandlerRequestInterceptor -{ - @AroundInvoke - public Object aroundInvoke(final InvocationContext invocation) throws Exception - { - String methodName = invocation.getMethod().getName(); - Object[] args = invocation.getParameters(); - if (!"onMessage".equals(methodName) || args.length != 1 || !(args[0] instanceof Message)) - { - return invocation.proceed(); - } - - ContextualMessageHandlerRequest contextualRequest = new ContextualMessageHandlerRequest((Message) invocation.getParameters()[0]) - { - @Override - public void process() throws Exception - { - setResult(invocation.proceed()); - } - }; - contextualRequest.run(); - return contextualRequest.getResult(); - } -}