[rules-users] Exception executing consequence for rule xxx in yyy: java.lang.RuntimeException: unable to access field

[magaram]

Laune - 

I am sorry - I did not answer your earlier question. The type in this
instance was a double. But we have this exception consistently if all of
these conditions are met -

1.) In the consequence we do an assignment to a public field.
2.) There are more than one instance of the same rule firing based on
multiple tuples that match it.

The workaround seems to be to replace the field assignment with a setter
invocation on the field.
i.e.

   in lieu of 

     when
              ...
      then
             $foo.x = $bar.y +$bar.z
             ...
      end

do -

     when
              ...
      then
             $foo.setX($bar.y +$bar.z)
             ...
      end

However as I am testing with this workaround I am seeing other issues. I am
starting to see execution hangs in certain testcases. I have a parallel of
running these on ILOG JRules and they work - so I am certain that there are
no inadvertant infinite loop invocations between rules.

Thanks,
Muk



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