Re: [rules-users] Drools 5.4 Jitting Error
FYI, I came across a similar problem calling a method declared on a Java
helper class, when the method takes a Number and the value passed in is
declared as long or int. Problem does not occur when value is declared as
double.
Simplified version of my example:
class JavaHelper {
public boolean helperMethod(Number value) {
return true;
}
}
............
declare BusinessObject
LongAttribute : long
DoubleAttribute : double
end
............
rule "TestRule"
when
$helper: JavaHelper ()
$object: BusinessObject (
$helper.helperMethod(LongAttribute)
)
then
// ....
end
This gives the exception shown below. Exception goes away when replacing
LongAttribute with DoubleAttribute.
One workaround is to create multiple versions of helperMethod:
public boolean helperMethod(long value) {..}
public boolean helperMethod(double value) {..}
=============
Exception in thread "Thread-5" java.lang.RuntimeException: Exception
jitting: $helper.helperMethod(LongAttribute)
at
org.drools.rule.constraint.MvelConstraint.executeJitting(MvelConstraint.java:219)
at
org.drools.rule.constraint.MvelConstraint.access$000(MvelConstraint.java:41)
at org.drools.rule.constraint.MvelConstraint$1.run(MvelConstraint.java:201)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.VerifyError: (class:
ConditionEvaluatorc78edf31751242d095abbdec5e344aa4, method: evaluate
signature:
(Ljava/lang/Object;Lorg/drools/common/InternalWorkingMemory;Lorg/drools/reteoo/LeftTuple;)Z)
Expecting to find long on stack
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getConstructor0(Class.java:2699)
at java.lang.Class.getConstructor(Class.java:1657)
at
org.drools.rule.builder.dialect.asm.ClassGenerator.newInstance(ClassGenerator.java:173)
at
org.drools.rule.constraint.ASMConditionEvaluatorJitter.jitEvaluator(ASMConditionEvaluatorJitter.java:53)
at
org.drools.rule.constraint.MvelConstraint.executeJitting(MvelConstraint.java:217)
... 5 more
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