Ant, I just created a JIRA and attached my application. If possible, I will try to figure out a patch:-) https://issues.apache.org/jira/browse/TUSCANY-1398
Best Regards, York ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Fri, 29 Jun 2007 22:09:08 -0700 ant elder wrote: On 6/30/07, He Yuan Huang <[EMAIL PROTECTED]> wrote: Hi, I created a simple SCA application, which involves an order process. Below is the composite file of the application. Note that, the callback method of Supplier will invoke the callback interface of Customer. Thus, there are nested callbacks. <?xml version="1.0" encoding="UTF-8"?> <composite xmlns="http://www.osoa.org/xmlns/sca/1.0";; targetNamespace="http://orderprocess";; xmlns:cb="http://orderprocess";; name="orderprocess"> <component name="Customer"> <implementation.java class="orderprocess.CustomerImpl"/> <reference name="supplier" target="Supplier/Order"> <interface.java interface="orderprocess.Order" callbackInterface="orderprocess.OrderNotification"/> </reference> </component> <component name="Supplier"> <service name="Order"> <interface.java interface="orderprocess.Order" callbackInterface="orderprocess.OrderNotification"/> </service> <implementation.java class="orderprocess.SupplierImpl"/> <reference name="railway" target="RailwayTransport/Shipment"> <interface.java interface="orderprocess.Shipment" callbackInterface="orderprocess.ShipmentNotification"/> </reference> <reference name="highway" target="HighwayTransport"> <interface.java interface="orderprocess.Shipment" callbackInterface="orderprocess.ShipmentNotification"/> </reference> </component> <component name="HighwayTransport"> <service name="Shipment"> <interface.java interface="orderprocess.Shipment" callbackInterface="orderprocess.ShipmentNotification"/> </service> <implementation.java class="orderprocess.HighwayTransport"/> <property name="period">5000</property> </component> <component name="RailwayTransport"> <service name="Shipment"> <interface.java interface="orderprocess.Shipment" callbackInterface="orderprocess.ShipmentNotification"/> </service> <implementation.java class="orderprocess.RaiwayTransport"/> <property name="period">1000</property> </component> </composite> However, the application fails on both SCA Java 0.90 and trunk. Below is the error message. When I debugged the application, I found that it might be caused by wrong "from" info in ThreadMessageContext. java.lang.NullPointerException at org.apache.tuscany.sca.core.invocation.JDKCallbackInvocationHandler.invoke ( JDKCallbackInvocationHandler.java:77) at $Proxy11.notify(Unknown Source) at orderprocess.SupplierImpl.notify(SupplierImpl.java:70) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke( NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.tuscany.sca.implementation.java.invocation.JavaTargetInvoker.invokeTarget ( JavaTargetInvoker.java:112) at org.apache.tuscany.sca.implementation.java.invocation.JavaTargetInvoker.invoke ( JavaTargetInvoker.java:134) at org.apache.tuscany.sca.implementation.java.invocation.TargetInvokerInvoker.invoke ( TargetInvokerInvoker.java:46) at org.apache.tuscany.sca.core.invocation.AbstractInvocationHandler.invoke( AbstractInvocationHandler.java:84) at org.apache.tuscany.sca.core.invocation.JDKCallbackInvocationHandler.invoke ( JDKCallbackInvocationHandler.java:85) at $Proxy13.notify(Unknown Source) at orderprocess.RaiwayTransport.doShipping(RaiwayTransport.java:56) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke( NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.tuscany.sca.implementation.java.invocation.JavaTargetInvoker.invokeTarget ( JavaTargetInvoker.java:112) at org.apache.tuscany.sca.implementation.java.invocation.JavaTargetInvoker.invoke ( JavaTargetInvoker.java:134)RuntimeException invoking receiveResult: java.lang.NullPointerException at org.apache.tuscany.sca.implementation.java.invocation.TargetInvokerInvoker.invoke ( TargetInvokerInvoker.java:46) at org.apache.tuscany.sca.core.invocation.NonBlockingInterceptor$1.run( NonBlockingInterceptor.java:68) at org.apache.tuscany.sca.core.work.Jsr237Work.run(Jsr237Work.java :61 ) at org.apache.tuscany.sca.core.work.ThreadPoolWorkManager$DecoratingWork.run( ThreadPoolWorkManager.java:206) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask( ThreadPoolExecutor.java:650) at java.util.concurrent.ThreadPoolExecutor$Worker.run( ThreadPoolExecutor.java:675) at java.lang.Thread.run(Thread.java:595) Best Regards, York Is there any chance you could raise a JIRA ( http://issues.apache.org/jira/browse/TUSCANY) and attach your application so we could recreate this problem? And even better if you're keen...also a patch to fix the bug :-) ...ant
