9:41 a.m.
I just read you condition. You are building $endDate to
Segment.endDate and than comparing Segment.startDate with $endDate
what is same as comparing Segment.startDate with Segment.endDate ->
transition principle.
Pavel
2010/2/24 Shabbir Dhari <sdhari(a)hotmail.com>:
Hi Pavel
I really don’t understand what do you mean. I guess you didn’t read complete
thread carefully. Assigning endDate attribute in a variable and not using
that variable in condition make no sense to me.
Shabbir
> Date: Wed, 24 Feb 2010 10:54:24 +0100
> From: pavel.tavoda(a)gmail.com
> To: rules-users(a)lists.jboss.org
> Subject: Re: [rules-users] Comparing Date with || OR operator
>
> What about:
> Membership ( $regDate : regDate)
> Segment ($endDate : endDate, startDate < $regDate || startDate >
> endDate )
>
> Logically startDate > endDate doesn't make sense but it should work ;-)
>
> Pavel
>
> 2010/2/24 Shabbir Dhari <sdhari(a)hotmail.com>:
> > I tried with some thing different and it worked but I don’t want this as
> > I
> > have many collections in my data structure.
> >
> > //this works
> > Membership ( $regDate : regDate)
> > Segment ( $endDate : endDate )
> > Segment ( startDate < $regDate || startDate > $endDate )
> >
> > //this does NOT work
> > Membership ( $regDate : regDate)
> > Segment ($endDate : endDate, startDate < $regDate || startDate >
> > $endDate )
> >
> > ________________________________
> > From: sdhari(a)hotmail.com
> > To: rules-users(a)lists.jboss.org
> > Date: Tue, 23 Feb 2010 23:09:50 +0000
> > Subject: Re: [rules-users] Comparing Date with || OR operator
> >
> > Segment ( $endDate : endDate, startDate < $regDate || startDate >
> > $endDate )
> > even does not work. I am using verstion 5.0.1. All dates are
> > java.util.Date
> > and values in sample fact are:
> >
> > regDate = Fri Aug 01 00:00:00 BST 2008
> > startDate = Tue Sep 01 00:00:00 BST 2009
> > endDate = Fri Jul 30 00:00:00 BST 2010
> >
> > Stack trace:
> >
> > java.lang.NullPointerException
> > at org.drools.reteoo.LeftTuple.get(LeftTuple.java:265)
> > at org.drools.reteoo.LeftTuple.get(LeftTuple.java:300)
> > at
> >
> >
org.drools.rule.VariableRestriction$ObjectVariableContextEntry.updateFromTuple(VariableRestriction.java:320)
> > at
> >
> >
org.drools.rule.AbstractCompositeConstraint$MultiFieldConstraintContextEntry.updateFromTuple(AbstractCompositeConstraint.java:305)
> > at
> >
> >
org.drools.common.SingleBetaConstraints.updateFromTuple(SingleBetaConstraints.java:119)
> > at org.drools.reteoo.JoinNode.assertLeftTuple(JoinNode.java:109)
> > at
> >
> >
org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:117)
> > at
> >
> >
org.drools.reteoo.SingleLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:78)
> > at
> >
> >
org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:142)
> > at
> >
> >
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
> > at
> > org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:185)
> > at
> > org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:146)
> > at
> >
> > org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1046)
> > at
> >
> > org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:1001)
> > at
> >
> > org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788)
> > at
> >
> >
org.drools.reteoo.ReteooStatelessSession.execute(ReteooStatelessSession.java:192)
> > at
> >
> > au.gov.nsw.osr.zena.rules.AnnualRulesTester.main(AnnualRulesTester.java:57)
> >
> >
> >> Date: Tue, 23 Feb 2010 12:54:46 +0100
> >> From: wolfgang.laun(a)gmail.com
> >> To: rules-users(a)lists.jboss.org
> >> Subject: Re: [rules-users] Comparing Date with || OR operator
> >>
> >> Please try this rewrite of the 2nd CE:
> >> Segment ( $endDate : endDate, startDate < $regDate || startDate >
> >> $endDate
> >> )
> >> and report the outcome to the list, together with the Dools version
> >> you are using.
> >> Thank you.
> >>
> >>
> >> 2010/2/23 dhari <sdhari(a)hotmail.com>:
> >> > Hi Thomas
> >> >
> >> > Thanks your prompt reply. I am sure all three attributes are NOT
> >> > null. I
> >> > have tested them before sending question to mailing list. If you
> >> > want,
> >> > I can
> >> > send complete sample code and you can try it at your end.
> >> >
> >> > Regards,
> >> > Dhari
> >> >
> >> >
> >> > ________________________________
> >> > Date: Tue, 23 Feb 2010 02:50:08 -0800
> >> > From: [hidden email]
> >> > To: [hidden email]
> >> > Subject: Re: Comparing Date with || OR operator
> >> >
> >> > If it works fine with an and operator then I’d imagine that startDate
> >> > <
> >> > $regDate returns false, with an && this would abort evaluation
> >> > immediately
> >> > but with an or it would mean that startDate > endDate is evaluated
> >> > and
> >> > so
> >> > presumably it is this bit that is throwing the NPE. I’d imagine that
> >> > the
> >> > most likely reason for this would be that endDate is null.
> >> >
> >> >
> >> >
> >> > Try changing it too
> >> >
> >> > Segment ( startDate < $regDate || (endDate != null &&
startDate >
> >> > endDate) )
> >> >
> >> > And see whether you loose the NPE.
> >> >
> >> >
> >> >
> >> > Thomas
> >> >
> >> >
> >> >
> >> > From: [hidden email] [mailto:[hidden email]] On Behalf Of dhari
> >> > Sent: 23 February 2010 06:15
> >> > To: [hidden email]
> >> > Subject: [rules-users] Comparing Date with || OR operator
> >> >
> >> >
> >> >
> >> > The following code generates NPE in ReteTuple.java
> >> >
> >> > rule
> >> >
> >> > when
> >> >
> >> > Membership ( $regDate : regDate)
> >> >
> >> > Segment ( startDate < $regDate || startDate >
endDate )
> >> >
> >> > then
> >> >
> >> > System.err.print(“Invalid start date”);
> >> >
> >> > end
> >> >
> >> > I am new in Drools and don’t know much about DRL scripting. It works
> >> > fine I
> >> > use && operator instead.
> >> >
> >> > ________________________________
> >> >
> >> > View this message in context: Comparing Date with || OR operator
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> >> >
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