How to use ref-attribute from apache-camel within SwitchYard

[mae]

I have a SwitchYard-Application (Version: 1.1) with an camel-service-component implemented via xml-routes.

Within xml-route i want to throw any exception.

I found the tag: "<throwException ref="myFail"/>" for that.

But on deployment this lead to the following exception:

Caused by: java.lang.IllegalArgumentException: exception or ref must be specified on: ThrowException[ref:myFail]

Certainly because no implementing-class for "myFail" is configured.

But how exactly i can do this?

Example xml-route:

<?xml version="1.0" encoding="UTF-8"?>

<routes xmlns="http://camel.apache.org/schema/spring">

     <route streamCache="true"> <from uri="switchyard://Test" />

          <throwException ref="myFail"/>

     </route>

</routes>

[igarashitm]

Hi Martin,

Can you try adding @Named("myFail") on a Exception class you want to throw?

Thanks,

Tomo

[mae]

Thank you very much.

That works perfectly if i had CDI enabled within my SwitchYard-Application.

But my SwitchYard-Application at the moment is without CDI.

Is there any way to configure this without CDI?

[igarashitm]

If you put the Exception into camel registry manually, it may be resolved though. I think CDI @Named thing is the easiest way.

[mae]

Ok finally i got it.

Now my SwitchYard-Application is with CDI.

But "MyException" is now instantiated on deployment-time.

So i have no chance to set a custom-message at runtime (within my xml-route).

Is the <throwException/>-tag not intended to throw an exception with a custom runtime message?

For example i want to make a web-service-call which sometimes responds with an error-message-string.

Is there any way to trow an exception with these error-message-string as exception-message?

[igarashitm]

I found a feature request for it - https://issues.apache.org/jira/browse/CAMEL-4576 So throwException seems not to have such ability like passing error message. You may want to use Java DSL instead for now.