[rules-users] Why are MVEL rules compiled on first access?

[Sobhana]

hi,

Our application uses Drools 4.0.7 and Hibernate 3.x. We use the BRMS to
compile the rules from drl files (using java dialect) into rule packages
which are updated into the rule base using the rule agent. 

We have seen that MVEL rules are compiled when the rules are fired for the
first time. If the fact passed at the first run contains a Hibernate proxy
(subclass of the original object) and we later re-use the compiled rule on
the fact containing the original object, we get a ClassCastException.
However, if we pass the fact containing the original object in the first
run, there is no problem for further runs. 

Why are the rules not compiled when we create the package using the BRMS?
How can we enable precompilation so that the type is taken as the original
object itself?

Thanks,
Sobhana

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