[rules-users] Re: Recursion problem whilc execution of rules

[Nirmal.R]

initialze the variables with -1  and then assert
add  the following to the rules as the first eval condition
rule "gst_rate_ol"
eval(QuoteUpdater . getQuoteLevelGSTRate () == -1 )

rule "NZ_SD"
eval(
 QuoteUpdater . getQuoteLevelGSTStreamRate ( ) == -1) ;
 QuoteUpdater . getQuoteLevelStampDutyRate ( ) == -1);
 QuoteUpdater . getQuoteLevelStampDutyAmount()==-1); 
)

rule "gst_stream_rate_ol"
eval(QuoteUpdater . getQuoteLevelGSTStreamRate () == -1);

Tell me if it works 

Nirmal




KAPX wrote:
> 
> Hi,
> 
> I am using drools version 3.0. I have a recursion problem while executing
> a rule.
> Here is the sample code. 
> 
> import com.thirdpillar.QuoteUpdater
> import java.lang.String
> import java.math.BigDecimal
> 
> global BigDecimal TEMP
> global BigDecimal GL_SD_Amt
> 
> rule "gst_rate_ol"
> 		no-loop true
> 		salience 50
> 		when
> 			QuoteUpdater:QuoteUpdater()
> 			eval(QuoteUpdater.getCustomerTypeCountry().equals("New Zealand") &&
> 			 QuoteUpdater.isFinanceLease() == true ||
> 			 QuoteUpdater.isRental() == true ||
> 			 QuoteUpdater.isOperatingLease() == true ||
> 			 QuoteUpdater.isHirePurchase() == true)
> 		then
> 			System.out.println("1");
> 			TEMP = BigDecimal . valueOf ( 0.125 ) ;
> 			QuoteUpdater . setQuoteLevelGSTRate ( BigDecimal . valueOf ( TEMP .
> doubleValue ( ) ) ) ;
> 			modify(QuoteUpdater);
> end
> rule "NZ_SD"
> 		no-loop true
> 		salience 45
> 		when
> 			QuoteUpdater:QuoteUpdater()
> 			eval(QuoteUpdater . getCustomerTypeCountry (  ).equals("New Zealand"))
> 		then
> 			System.out.println("2");
> 			QuoteUpdater . setQuoteLevelGSTStreamRate ( BigDecimal . valueOf ( 0 )
> ) ;
> 			QuoteUpdater . setQuoteLevelStampDutyRate ( BigDecimal . valueOf ( 0 )
> ) ;
> 			GL_SD_Amt = BigDecimal . valueOf ( 0 ) ;
> 			QuoteUpdater . setQuoteLevelStampDutyAmount ( BigDecimal . valueOf ( 0
> ) ) ;
> 			modify(QuoteUpdater);
> end
> rule "gst_stream_rate_ol"
> 		salience 40
> 		no-loop true
> 		when
> 			QuoteUpdater:QuoteUpdater()
> 			eval(QuoteUpdater.getCustomerTypeCountry().equals("New Zealand") &&
> 			 QuoteUpdater.isRental() == true ||
> 			 QuoteUpdater.isOperatingLease() == true)
> 		then
>  			System.out.println("3");
> 			TEMP = BigDecimal . valueOf ( 0.125 ) ;
> 			QuoteUpdater . setQuoteLevelGSTStreamRate ( BigDecimal . valueOf ( TEMP
> . doubleValue ( ) ) ) ;
> 			modify(QuoteUpdater);
> end
> 
> Please help me out to resolve this problem. If you have any solution of
> how to handle it please give your inputs and suggestions. 
> 
> Regards,
> KAPIL
> 

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