7:39 a.m.
You can probably do what you need by using XOR-GROUPS (activation groups).
If your spreadsheet is configured to be sequential (or you explicitly set rule priority
levels) then only the highest priority matching rule in a particular xor-group will be
fired.
So you may be able to specify the rules as follows:
CONDITION
CONDITION
CONDITION
CONDITION
ACTION
XOR-GROUP
Foo
Date1 $param null
Date2 $param null
Date3 $param null
Date4 $param null
setPriority($param)
Date1
Date2
Date3
Date4
setPriority($param)
!=
1
DateXORGroup
!=
2
DateXORGroup
!=
3
DateXORGroup
!=
4
DateXORGroup
Then if Date4 is set the first rule would be fired, otherwise if date3 is set then row 2
would be fired etc.
If there are more permuations that you want to consider you can easily insert them too.
Hope that helps,
Thomas
> >
> >
> >
>
>
>
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-
bounces(a)lists.jboss.org] On Behalf Of HonorGod
Sent: 22 December 2009 11:21
To: rules-users(a)lists.jboss.org
Subject: Re: [rules-users] verifying 'is not null' in
decision table?
Thanks Thomas. I got this part now. But I guess the real scenarios I
have
been looking is -
I have 4 different date fields and I need to check if they are not
null and
set a priority using decision table.
Lets say I have Date 1 , Date 2 , Date 3 , Date 4. If Date 1 is not
null
and rest of them are null then my priority is Date 1. If Date 1 and
Date 2
are not null and the rest are null then my priority is Date 2 and so
no.....so we are looking at 16 different possibilites and the
priorities....how can i set the priority in this case...
Thanks
Swindells, Thomas wrote:
> > The key thing to remember with decision tables is that currently
a column
> is only included if there is a value in the rule row and that
value will
> always be included in the rule. The easiest way to do this is to
have a
> condition in the form "firstName != $param" and then
have null as the cell
> value. The other solution if you want separate rules for each
field which
> cannot be null is to have it in the form "$param !=
null" and enter the
> field name as the cell value.
> > Thomas
> -----Original Message-----
> > From: rules-users-bounces(a)lists.jboss.org
[mailto:rules-users-
> > bounces(a)lists.jboss.org] On Behalf Of
HonorGod
>> Sent: 21 December 2009 15:52
> > To: rules-users(a)lists.jboss.org
>> Subject: [rules-users] verifying 'is not null' in
decision table?
> > >> How can I verify if my condition attribute is not null in
decision table?
> > >> I have a class -
> > >> Public Class Person {
> > >> String firstName = null;
>> String lastName = null ;
> > >> }
> > >> In my decision table I have to check if firstName and
lastName are not
>> null
>> and then fire actions.
> > >> How I can do this? I know I can get that through drl.
> > Thanks
> > >> --
>> View this message in context:
>> decision-table-tp96386p96386.html
>> Sent from the Drools - User mailing list archive at
Nabble.com.
>> _______________________________________________
>> rules-users mailing list
>> rules-users(a)lists.jboss.org
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