Ok, thanks, but how do I do that in a template?
________________________________
From: Wolfgang Laun-2 [via Drools]
[mailto:ml-node+3011098-67106608-404...@n3.nabble.com]
Sent: 01 June 2011 15:46
To: Mullard, Christopher
Subject: Re: [rules-users] Smart Templates
In the Drools Expert manual, search for
"And, finally, here is an example of Import, Variables and Functions."
The figure below shows cells from a spreadsheet.
-W
2011/6/1 ChrisMu <[hidden email]>
Sorry - you're losing me - could you give an example please?
Thanks
________________________________
From: Wolfgang Laun-2 [via Drools] [mailto:[hidden email]
<http://user/SendEmail.jtp?type=node&node=3011008&i=0> ]
Sent: 01 June 2011 15:25
To: Mullard, Christopher
Subject: Re: [rules-users] Smart Templates
It's just like a Java static method. Call JAva code if you don't want
to put it all into DRL function, or import from Java in the first place. Both
"import" and "function" can be used in spreadsheets.
-W
2011/6/1 ChrisMu <[hidden email]
<http://user/SendEmail.jtp?type=node&node=3010989&i=0> >
Agreed, but this was just an example - if the function required
something more complicated - say a DB lookup, could it be done?
________________________________
From: Wolfgang Laun-2 [via Drools] [mailto:[hidden email]
<http://user/SendEmail.jtp?type=node&node=3010490&i=0> ]
Sent: 01 June 2011 12:40
To: Mullard, Christopher
Subject: Re: [rules-users] Smart Templates
If there are just 2 types (IRDELTA, COMLEASEDELTA) you can add
a function that computes this from the 3-letter name.
-W
2011/6/1 ChrisMu <[hidden email]
<http://user/SendEmail.jtp?type=node&node=3010275&i=0> >
Possibly. Let me try again with what I'm trying to
achieve.
Given this excerpt from a decision table:
Basically I want to be able to specify a template that
says 'If Arg0 is a currency, output RiskType IRDELTA (and currency), if Arg0 is
a commodity (begins with 'X') then output RiskType COMLEASEDELTA (and
commodity).
When fed with data, this would generate the rules:
when Arg0 = USD, output RiskType IRDELTA, USD
when Arg0 = GBP, output RiskType IRDELTA, GBP
etc
when Arg0 = XAU, output RiskType COMLEASEDELTA, XAU
etc
In this way theRiskType name is inferred from the data
when the rules are generated. It can be done by explicitly stating all possible
combinations as in the decision table above but that gets tedious quickly. I
wanted to have a more general template that could generate all the specific
rules instances.
Does that make more sense?
Thanks
Chris
________________________________
From: Wolfgang Laun-2 [via Drools] [mailto:[hidden
email] <http://user/SendEmail.jtp?type=node&node=3010119&i=0> ]
Sent: 01 June 2011 11:21
To: Mullard, Christopher
Subject: Re: [rules-users] Smart Templates
I don't want to confuse you, but have you considered
not using templates at all? If you can generate N rules from N objects
containing different literals for matching a fact or for updating a fact field,
then you can achieve the same thing with a single rule and additional facts
containing those literal values.
rule "one 4 all"
when
  Service( $name: name, $value: value )
  $sb: ServiceBean( name == $name, value == $value )
then
  # RiskType ... is what?
  ...$value..., ...$sb.getType()...
end
-W
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