[rules-users] java.lang.LinkageError

[David Minor]

That was the root error, the rest is just drools firing its rules.

So does this mean there's some sort of incompatibility in the class
ShoppingCart/Rule_CSMEGBUL_b996907c25e3495a94b6b041c1c08c50? I assume
this is a class that's auto-generated by drools. Is it possible that
serializing the rule Package is leading to an incompatible class
definition?

On Thu, Aug 16, 2012 at 10:41 PM, Wolfgang Laun <wolfgang.laun at gmail.com> wrote:
> 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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>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
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-- 
_____________
David Minor