A user-supplied method caused a
Exception: (Stack trace exceprt): org.drools.RuntimeDroolsException: Exception executing ReturnValue constraint org.drools.rule.ReturnValueRestriction@9cf19fa6 : java.lang.NullPointerException at org.drools.rule.ReturnValueConstraint.isAllowed(ReturnValueConstraint.java:138) ..... Caused by: java.lang.NullPointerException at java.util.Date.getMillisOf(Date.java:939)
The user believed this error was caused by a simple "empty" check, because this was one of the conditions checked in the rule. In fact, it was a secondardy condition on the rule. The rule reads as follows:
mybean : MyBean( someDateField1 != ( empty ) , someDateField2 < ( mybean.convertStringToDate(someTextFieldHoldingADate) ) )
- JBoss Enterprise BRMS 5.0.2
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