simple predicate fails to introspect the exception in an onException clause
using onWhen
----------------------------------------------------------------------------------------
Key: CAMEL-4513
URL: https://issues.apache.org/jira/browse/CAMEL-4513
Project: Camel
Issue Type: Bug
Components: camel-core
Reporter: Thomas Gueze
Priority: Minor
The bug occured in the 2.6.0 version of Camel I'm using. I haven't test it
against the latest version but I've checked the sources and it doesn't seem to
have change since.
Given a camel route, with a onException clause like this :
this.onException(MyException.class)
.onWhen(simple("${exception.myExceptionInfo.aValue} == true"))
...
MyException is a customed exception like this :
public class MyException extends Exception {
....
public MyExceptionInfo getMyExceptionInfo() {
...
}
}
What I've observed is that when BeanExpression.OgnlInvokeProcessor.process
iterate through the methods to calls, it does :
// only invoke if we have a method name to use to invoke
if (methodName != null) {
InvokeProcessor invoke = new InvokeProcessor(holder,
methodName);
invoke.process(resultExchange);
// check for exception and rethrow if we failed
if (resultExchange.getException() != null) {
throw new RuntimeBeanExpressionException(exchange,
beanName, methodName, resultExchange.getException());
}
result = invoke.getResult();
}
It successfully invoke the method : invoke.process(resultExchange);
But it checks for exception in the exchange. Since we are in an exception
clause, there is an actual exception (thrown by the application, but unrelated
with the expression language search) and it fails
There is a simple workaround for that : writing his own predicate class to test
wanted conditions
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