Uh ... that's not good. The samples should be working. You should
raise an issue in jira.
I tried to locate the error via remote debugging. So, I started
Tomcat with
debugging support and stepped through the classes using eclipse
debugging
perspective. However, when I stepped into Invoker.java, I got a
message "com.sun.jdi.InternalExcpetion: Got error code in reply: 35
occurred
retrieving 'this' from stack frame". I think this is a result of
instrumenting Invoker.class by commons/javaflow. So, I can't locate
the error
exactly.
Hm ... usually instrumenting should not hamper debugging.
After sendPageAndWait these are the stacks:
- Integer Stack
0: 8
1: 0
2: 2
- Object stack:
0: CalculatorFlow
1: "a"
2: "page/calculator-a"
3: "hello world"
4: CalculatorFlow
5: Invoker
6: Class<T> (org.apache.cocoon.samples.flow.java.CalculatorFlow)
7: CalculatorFlow
- Reference stack:
0: CalculatorFlow
1: CalculatorFlow
I don't know, if these stacks are correct. However, several pop
actions happen
now:
1. Reducing iTop to 2
2. Reducing oTop to 5
3. Reducing rTop to 1
After this pops, the error occurs. I get an class exception error.
I don't know what caused the error and how to get more information.
Do you
have any idea?
More important than what listed above is the actual classloader that
loaded the class on the stack.
I you must be dealing with two different versions of CalculatorFlow or
Invoker. (Different in being loaded by different classloaders)
Check the .getClass().getClassLoader() for those and compare them with
where the CCE occurs.
cheers
--
Torsten
