3:48 p.m.
Sorry, me again,
I'm putting together some prototype rules that operate on related
objects in a graph of objects.
I'm adding all objects individually to working memory and then checking
the objects are related in the rule to ensure only valid combinations
are selected; for example:-
//Java code
parent.addChild(child)
wm.assertObject(parent);
wm.assertObject(child);
//Rule
rule "Adult smurfs"
when
c : Child ( age > 18, p : parent )
Parent ( parentId == ( p.parentId ), type == "SMURF" )
then
System.out.println("Smurf " + p.getName() + " is " + c.getAge()
+ " years old."
end
rule "Adult clangers"
when
c : Child ( age > 18, p : parent )
Parent ( parentId == ( p.parentId ), type == "CLANGER" )
then
System.out.println("Clanger " + p.getName() + " is " +
c.getAge() + " years old."
end
This requires that the parent-child relationship is navigable from the
child end of the relationship -- child.getParent().
What other approaches does anyone else use to implement rules that span
related objects?
With kind regards,
Michael Anstis
-------------------------------------------
Next Generation Estimating System
* Trafford House (Int) 8 718 2239
* Trafford House (Ext) +44 (0)1268 702239
* <mailto:manstis1@ford.com>
5:45 p.m.
New subject: Explicit cast in a JBoss rule.
Hi,
I want to know if it is possible to do an explicit cast on my beans in a JBoss rule.
Regards, Oana
---------------------------------
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6:16 p.m.
New subject: Explicit cast in a JBoss rule.
In Consequence you can use any valid java code.
Mark
nicolae oana wrote:
Hi,
I want to know if it is possible to do an explicit cast on my beans
in a JBoss rule.
Regards, Oana
------------------------------------------------------------------------
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<http://answers.yahoo.com/;_ylc=X3oDMTFvbGNhMGE3BF9TAzM5NjU0NTEwOARfcwMzOT...;.
Try it now.
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midnight
Hi Michael,
To do the opposite approach (where the relationship is navigable from the
parent only) you can use the following:
when
c : Child ( age > 18 )
Parent ( children contains c, type == "SMURF" )
Of course this requires either
- the child object in the children collection to be the same as the
asserted child object or
- the equals/hashcode method to be implemented appropriately in Child
cheers
Steve
On 1/24/07, Anstis, Michael (M.) <manstis1(a)ford.com> wrote:
Sorry, me again,
I'm putting together some prototype rules that operate on related objects
in a graph of objects.
I'm adding all objects individually to working memory and then checking
the objects are related in the rule to ensure only valid combinations are
selected; for example:-
//Java code
parent.addChild(child)
wm.assertObject(parent);
wm.assertObject(child);
//Rule
rule "Adult smurfs"
when
c : Child ( age > 18, p : parent )
Parent ( parentId == ( p.parentId ), type == "SMURF" )
then
System.out.println("Smurf " + p.getName() + " is " +
c.getAge() +
" years old."
end
rule "Adult clangers"
when
c : Child ( age > 18, p : parent )
Parent ( parentId == ( p.parentId ), type == "CLANGER" )
then
System.out.println("Clanger " + p.getName() + " is " +
c.getAge()
+ " years old."
end
This requires that the parent-child relationship is navigable from the
child end of the relationship -- child.getParent().
What other approaches does anyone else use to implement rules that span
related objects?
With kind regards,
Michael Anstis
-------------------------------------------
***Next Generation Estimating System*
( Trafford House (Int) 8 718 2239
( Trafford House (Ext) +44 (0)1268 702239
* <***mailto:manstis1@ford.com* <manstis1(a)ford.com>>
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3 comments
4 participants
participants (4)
-
Anstis, Michael (M.) -
Mark Proctor -
nicolae oana -
Steven Williams