[rules-users] Collection & Emptyness

[vdelbart]

Hi,

I have an object 'VenueGlobal' with a property 'sousVenues' who is a List of
SousVenue. I try to test the emptyness of this list in on sentence but i
don't know why it doesn't work :

I try this :

VenueGlobal( sousVenues == null || sousVenues.empty )

but I have this error :

org.drools.rule.InvalidRulePackage: [11,53]: unknown:11:53 Unexpected token
')'
	at org.drools.rule.Package.checkValidity(Package.java:424)

I try this :

VenueGlobal( sousVenues == null || sousVenues.size == 0 )

but I have this error :

Caused by: org.mvel.PropertyAccessException: unable to resolve property:
size
	at
org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getBeanProperty(ReflectiveAccessorOptimizer.java:382)


I don't know what the solution ?


regards,

V.


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