6:26 p.m.
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
4:57 p.m.
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(a)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
JBoss, a division of Red Hat @ www.jboss.com
5:16 p.m.
This is not a compilation error, it's a runtime error. It means
you're passing a wrong type.
For instance, you may do:
f.m(x)
where method m is declared to take a type T, but you pass an object x
of type S which is not a subtype of T.
To debug this, examine the arguments in the section of code.
Also, insert statements such as:
if (!(x instanceof T))
System.err.println(....)
before the call to f or use asserts.
- Godmar
On Fri, Jul 18, 2008 at 10:57 AM, Edson Tirelli <tirelli(a)post.com> wrote:
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(a)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
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
--
Edson Tirelli
JBoss Drools Core Development
JBoss, a division of Red Hat @ www.jboss.com
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2 comments
3 participants
participants (3)
-
Edson Tirelli -
Godmar Back -
John Squire