[rules-users] java.lang.LinkageError

[Wolfgang Laun]

Javadoc: Subclasses of LinkageError indicate that a class has some
dependency on another class; however, the latter class has
incompatibly changed after the compilation of the former class.

Looks like some incompatibility between your development and
deployment environment.

Did you truncate any helpful message from the stack trace?

-W

On 17/08/2012, David Minor <daveminor at gmail.com> wrote:
> Hi,
>
> We're in the process of moving our web apps from Java 5 to Java 7 and
> Drools 3 to Drools 5.4.0. Our rule base is compiled and serialized to
> the db by one app, and read from the db and fired by another.
>
> Everything went fine during testing, but when we tried to switch to
> production we got this when firing the rule base:
>
> Caused by: java.lang.LinkageError:
> ShoppingCart/Rule_CSMEGBUL_b996907c25e3495a94b6b041c1c08c50
>         at
> ShoppingCart.Rule_CSMEGBUL_b996907c25e3495a94b6b041c1c08c50Eval0InvokerGenerated.evaluate(Unknown
> Source)
>         at
> ShoppingCart.Rule_CSMEGBUL_b996907c25e3495a94b6b041c1c08c50Eval0Invoker.evaluate(Unknown
> Source)
>         at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:114)
>         at
> org.drools.reteoo.EvalConditionNode.assertLeftTuple(EvalConditionNode.java:178)
> [snip]
>
> Does anyone have any ideas as to what might cause this?
>
> Here is the rule in question if that helps:
>
> rule "CSMEGBUL"
>         salience -1
>         agenda-group "SubtotalDependent"
>         when
>                 delegate: PromotionRuleDelegate ( )
>                 cart: ShoppingCart ( )
>                 eval (
> delegate.checkDateRange("1181718000000","1497337200000") )
>                 eval ( delegate.checkEnabled("false") )
>                 eval ( delegate.cartHasPromoCode(cart, "CSMEGBUL") )
>                 eval ( delegate.checkUsage(1,100027) )
>         then
>                 delegate.applyOrderDiscountAmount(cart, 100027, "10.0");
>                 delegate.promoCodeApplied(cart, "CSMEGBUL");
> end
>
>
> --
> _____________
> David Minor
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