Hey John, I know it is difficult, but we need some way to reproduce... can you isolate a few rules and run them in a loop trying to force the exception?


2008/7/17 John Squire <jc_squire@hotmail.com>:
Hi All,

We are intermittently getting mvel compilation errors with the following:

Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class
        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.mvel.optimizers.impl.refl.MethodAccessor.getValue(MethodAccessor.java:61)
        ... 148 more

The rules compile ok and the application will run normally (rules processing successfully) for a few days then this error will occur. Tried to replicate but once the application is restarted the last action before the failure is repeated and always processes successfully.

Any help would be appreciated.

Regards
JS

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Edson Tirelli
JBoss Drools Core Development
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