Hi,
I have the following rules,
global java.util.Set accountNumbers;
rule "rule 1"
when
$d : Document()
$c : CreditTransferTransactionInformation (dbtrAcct == null || dbtrAcct.id == null || dbtrAcct.id.othr == null ||
dbtrAcct.id.othr.id == null) from $d.cstmrCdtTrfInitn.cdtTrfTxInf
$i : InternalInfo() from $c.internalInfo
then
$i.setStatus(PaymentStatus.INVALID);
$i.setErrorCode("PR002");
$i.setAdditionalInfo("Account number is null");
end
rule "rule 2"
when
$d : Document()
$c : CreditTransferTransactionInformation(internalInfo.status != PaymentStatus.INVALID &&
dbtrAcct.id.othr.id not memberOf accountNumbers) from $d.cstmrCdtTrfInitn.cdtTrfTxInf
$i : InternalInfo() from $c.internalInfo
then
$i.setStatus(PaymentStatus.INVALID);
$i.setErrorCode("PR002");
$i.setAdditionalInfo("Account number not available in the routing table");
end
My assumption is rule 1 and rule 2 will be executed in the order they appear. Rule 1 checks all the nested attributes are not null and set the status as invalid if any of them is null. Rule 2 uses the and operator and checks the nested attribute is in the collection defined by the global, only if the object is valid. I assume the LHS of rule 2 will be short circuited if the object is invalid. However, if any of the nested property is null I get the following exception from MVEL.
Caused by: [Error: unable to access property (null parent): id]
[Near : {... Unknown ....}]
^
[Line: 1, Column: 0]
at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:861)
Regards
Meeraj