[rules-users] Changing the default character for delimiter in decision tables

[Nimesh Muley]

Hi,

All this boils down to RuleModel which does not have mechanism of sending more than 1 attribute in an action. Look at BRDRLPersistence and also ActionFieldSetValue classes in drools-compiler.

Regards,
- Nimesh

From: rules-users-bounces at lists.jboss.org [mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Vikrant Yagnick
Sent: Friday, October 10, 2008 7:52 PM
To: Rules Users List
Subject: [rules-users] Changing the default character for delimiter in decision tables

Hi All,

I wanted to throw to discussion a feature that might be good in Drools. I am basically trying to model a formula evaluator in a decision table. The idea being that a business user directly defines formulas(without having to use Guided Editors in the BRMS or Eclipse, as business users love Excel more than anything else..;)).

The thing I am trying to do is the following:

Condition                                      Action
T:FormulaFact
formulaName                        int salary=t.getSalary();
                                               t.setBenefit($1);


Formula1                          salary * 100
Formula2                        salary * 1000

Everything runs great as Excel simply substitutes the entered string into the function. The problem I face is when I write something like this:

Formula3                        min(salary,100)


The ","  here is treated as the delimited of a parameter. So the compiled DRL does not set the string correctly. It would make a rule like
Rule FormulaTable_123
When
T: FormulaFact(formulaName="Formula1")
Then
int salary=t.getSalary();
t.setBenefit(min(salary); //Since the  words after the , become part of $2 which is not defined.
End


Is there any-way to declaratively change the Decision Table Parser to not use , for delimiting between parameters and use some other character.

I could always write the DT using my character, then compile the DT into DRL and replace my character with ,(I am thinking of using "Colon"), but would it be a good idea to have an Excel or  a Property File that can be read by the SpreadSheetCompiler to change the delimited character used by the Parser.

Cheers,
Vikrant









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MASTEK LTD.
Mastek is in NASSCOM's 'India Top 20' Software Service Exporters List.
In the US, we're called MAJESCOMASTEK

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Opinions expressed in this e-mail are those of the individual and not that of Mastek Limited, unless specifically indicated to that effect. Mastek Limited does not accept any responsibility or liability for it. This e-mail and attachments (if any) transmitted with it are confidential and/or privileged and solely for the use of the intended person or entity to which it is addressed. Any review, re-transmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. This e-mail and its attachments have been scanned for the presence of computer viruses. It is the responsibility of the recipient to run the virus check on e-mails and attachments before opening them. If you have received this e-mail in error, kindly delete this e-mail from desktop and server.
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