How to put "Power" in Formula box of THEN ?

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zeeshan

Thursday, 24 May 2012 Thu, 24 May '12

4:02 a.m.

Hi ! Can I put "Power" in Fromula box of THEN part...?? this is the formula that I have to apply.... I want to put this formula in THEN section ----> *deathBenefit=sumAssured * [(1 - 1/(1 + (interestRate/100)^(policyTerm-policyYear+1) / 1 - 1/(1 + (interestRate/100)^(policyTerm) ]*.... -- View this message in context: http://drools.46999.n3.nabble.com/How-to-put-Power-in-Formula-box-of-THEN... Sent from the Drools: User forum mailing list archive at Nabble.com.

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Michael Anstis

Thursday, 24 May Thu, 24 May

4:12 a.m.

The "THEN" part is either (depending upon the rule's dialect) a Java or MVEL code block. Java defines the ^ operators as a bitwise exclusive or. I suspect you should probably use Math.pow. Math is in the java.lang package so you shouldn't need to explicitly import. With kind regards, Mike On 24 May 2012 10:02, zeeshan <zeeshan.spring(a)gmail.com> wrote:

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zeeshan

5:50 a.m.

Michael Anstis

6:40 a.m.

Formula box should be OK, but check the generated DRL. On 24 May 2012 11:50, zeeshan <zeeshan.spring(a)gmail.com> wrote:

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Hi Mike and many thanks for replying ! shall I use *Math.pow* in free form DRL of THEN or can I use in Formula Box...??? thanks !! -- View this message in context: http://drools.46999.n3.nabble.com/How-to-put-Power-in-Formula-box-of-THEN... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

zeeshan

7:21 a.m.

Hi Mike ! I have decomposed the formula into several small parts....I was trying with Free form DRL, then I validated it...it is giving error.... *[DeathBenefitRule] Unable to Analyse Expression int $interestNumerator=1+($deathBenefit.getInterestRate()/100); int $interestRateNumerator=1; int condition=$deathBenefit.getPolicyTerm()-$deathBenefit.getPolicYear()+1; for(int i=0; i<=condition; ++i ){ $interestRateNumerator=$interestRateNumerator*$interestNumerator; }; double numerator=1-1/$interestRateNumerator; System.out.println(numerator);: [Error: no such identifier: condition] [Near : {... for(int i=0; i<=condition; ++i ){ ....}] ^ [Line: 6, Column: 17]* I put this in the box---> *int $interestNumerator=1+($deathBenefit.getInterestRate()/100); int $interestRateNumerator=1; int condition=$deathBenefit.getPolicyTerm()-$deathBenefit.getPolicYear()+1; for(int i=0; i<=condition; ++i ){ $interestRateNumerator=$interestRateNumerator*$interestNumerator; } double numerator=1-1/$interestRateNumerator; System.out.println(numerator);* -- View this message in context: http://drools.46999.n3.nabble.com/How-to-put-Power-in-Formula-box-of-THEN... Sent from the Drools: User forum mailing list archive at Nabble.com.

Wolfgang Laun

7:37 a.m.

This is a bug (probably in MVEL) in 5.3.0, which has been fixed for 5.4.0. -W On 24/05/2012, zeeshan <zeeshan.spring(a)gmail.com> wrote:

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zeeshan

7:51 a.m.

Hi Laune and thanks for replying !! *1.* I am using *5.4.0 Beta* 1... I also tried by using *Math.pow* as Mike posted above but by validating got error... *[DeathBenefitRule] Unable to Analyse Expression $deathBenefit.setSumAssured( sumAssured*(1-1/ Math.pow((1+(interestRate/100),policyTerm-policYear+1)/1-1/(Math.pow(1+(interestRate/100),policyTerm) ); drools.update( $deathBenefit );: [Error: unbalanced braces ( ... )] [Near : {... enefit.setSumAssured( sumAssured*(1-1/ Math.pow((1 ....}] ^ [Line: 1, Column: 28]* *2.* This I put in the Formula box --> *=sumAssured*(1-1/ Math.pow((1+(interestRate/100),policyTerm-policYear+1)/1-1/(Math.pow(1+(interestRate/100),policyTerm)* *3.* This is generated source code ---> 1*. | rule "DeathBenefitRule" 2. | dialect "mvel" 3. | when 4. | $deathBenefit : DeathBenefitFactModel( $sumAssured : sumAssured, $interestRate : interestRate, $policYear : policYear, $policyTerm : policyTerm) 5. | then 6. | $deathBenefit.setSumAssured( sumAssured*(1-1/ Math.pow((1+(interestRate/100),policyTerm-policYear+1)/1-1/(Math.pow(1+(interestRate/100),policyTerm) ); 7. | update( $deathBenefit ); 8. | end* -- View this message in context: http://drools.46999.n3.nabble.com/How-to-put-Power-in-Formula-box-of-THEN... Sent from the Drools: User forum mailing list archive at Nabble.com.

Michael Anstis

7:55 a.m.

The variables in the RHS's DRL aren't prefixed with $ as they are in the LHS. sent on the move On 24 May 2012 13:52, "zeeshan" <zeeshan.spring(a)gmail.com> wrote:

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zeeshan

8:33 a.m.

Hi Mike ! I tried with prefix $ too on the RHS, still giving error.... *[DeathBenefitRule] Unable to Analyse Expression $deathBenefit.setSumAssured( sumAssured * ( 1 - (1 / (Math.pow ( (1 + ($interestRate/100),$policyTerm-$policYear+1) ) ) ) ) / (1 - (1 / (Math.pow ( (1 + ($interestRate/100),$policyTerm) ) ) ) ) ); drools.update( $deathBenefit );: [Error: unable to resolve method using strict-mode: org.drools.spi.KnowledgeHelper.sumAssured()] [Near : {... efit.setSumAssured( sumAssured * ( 1 - (1 / (Math. ....}] ^ [Line: 1, Column: 30]* the sorce code ----> *1. | rule "DeathBenefitRule" 2. | dialect "mvel" 3. | when 4. | $deathBenefit : DeathBenefitFactModel( $sumAssured : sumAssured, $interestRate : interestRate, $policYear : policYear, $policyTerm : policyTerm) 5. | then 6. | $deathBenefit.setSumAssured( sumAssured * ( 1 - (1 / (Math.pow ( (1 + ($interestRate/100),$policyTerm-$policYear+1) ) ) ) ) / (1 - (1 / (Math.pow ( (1 + ($interestRate/100),$policyTerm) ) ) ) ) ); 7. | update( $deathBenefit ); 8. | end* -- View this message in context: http://drools.46999.n3.nabble.com/How-to-put-Power-in-Formula-box-of-THEN... Sent from the Drools: User forum mailing list archive at Nabble.com.

Michael Anstis

8:42 a.m.

I still see a sumAssured without $ on line 6. sent on the move On 24 May 2012 14:35, "zeeshan" <zeeshan.spring(a)gmail.com> wrote:

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zeeshan

8:55 a.m.

oops......now I tried by putting $ before sumAssured....still same error.... *[DeathBenefitRule] Unable to Analyse Expression $deathBenefit.setSumAssured( $sumAssured * ( 1 - (1 / (Math.pow ( (1 + ($interestRate/100),$policyTerm-$policYear+1) ) ) ) ) / (1 - (1 / (Math.pow ( (1 + ($interestRate/100),$policyTerm) ) ) ) ) ); drools.update( $deathBenefit );: [Error: unable to resolve method using strict-mode: org.drools.spi.KnowledgeHelper.,$policyTerm()] [Near : {... ($interestRate/100),$policyTerm-$policYear+1) ) ) ....}] ^ [Line: 1, Column: 91]* the source code --> *1. | rule "DeathBenefitRule" 2. | dialect "mvel" 3. | when 4. | $deathBenefit : DeathBenefitFactModel( $sumAssured : sumAssured, $interestRate : interestRate, $policYear : policYear, $policyTerm : policyTerm) 5. | then 6. | $deathBenefit.setSumAssured( $sumAssured * ( 1 - (1 / (Math.pow ( (1 + ($interestRate/100),$policyTerm-$policYear+1) ) ) ) ) / (1 - (1 / (Math.pow ( (1 + ($interestRate/100),$policyTerm) ) ) ) ) ); 7. | update( $deathBenefit ); 8. | end* -- View this message in context: http://drools.46999.n3.nabble.com/How-to-put-Power-in-Formula-box-of-THEN... Sent from the Drools: User forum mailing list archive at Nabble.com.

Michael Anstis

1:36 p.m.

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Wolfgang Laun

2:55 p.m.

A dollar sign '$' is valid in Java, so this shouldn't be an issue of LHS or RHS. -W On 24 May 2012 20:36, Michael Anstis <michael.anstis(a)gmail.com> wrote:

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I'd try using free-format DRL and breaking the expression down into smaller parts until it works. I can't see anything wrong with the syntax - unless it relates to the bug Wolfgang said was fixed for 5.4.0 (I *assume* he'd mean FINAL). The advice, as I have given before, would not to use a beta version as it is bound to have bugs in that were fixed for FINAL. I know you use it for the free-format text "Formula" TextBox in the RHS of the Guided Editor, but free-format DRL (with 5.4.0.FINAL) is a suitable workaround. On 24 May 2012 14:55, zeeshan <zeeshan.spring(a)gmail.com> wrote: > oops......now I tried by putting $ before sumAssured....still same > error.... > *[DeathBenefitRule] Unable to Analyse Expression > $deathBenefit.setSumAssured( $sumAssured * ( 1 - (1 / (Math.pow ( (1 + > ($interestRate/100),$policyTerm-$policYear+1) ) ) ) ) / (1 - (1 / > (Math.pow > ( (1 + ($interestRate/100),$policyTerm) ) ) ) ) ); drools.update( > $deathBenefit );: [Error: unable to resolve method using strict-mode: > org.drools.spi.KnowledgeHelper.,$policyTerm()] [Near : {... > ($interestRate/100),$policyTerm-$policYear+1) ) ) ....}] ^ [Line: 1, > Column: > 91]* > > > the source code --> *1. | rule "DeathBenefitRule" > 2. | dialect "mvel" > 3. | when > 4. | $deathBenefit : DeathBenefitFactModel( > $sumAssured : > sumAssured, $interestRate : interestRate, $policYear : policYear, > $policyTerm : policyTerm) > 5. | then > 6. | $deathBenefit.setSumAssured( $sumAssured * ( 1 - > (1 / (Math.pow > ( (1 + ($interestRate/100),$policyTerm-$policYear+1) ) ) ) ) / (1 - (1 / > (Math.pow ( (1 + ($interestRate/100),$policyTerm) ) ) ) ) ); > 7. | update( $deathBenefit ); > 8. | end* > > -- > View this message in context: > http://drools.46999.n3.nabble.com/How-to-put-Power-in-Formula-box-of-THEN... > Sent from the Drools: User forum mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

zeeshan

11:44 p.m.

Thanks Mikey and Laune for replying.... gonna try with 5.4.0 final version and free form DRL......I already broke the formula into several small parts....will let u know.... thanks !! -- View this message in context: http://drools.46999.n3.nabble.com/How-to-put-Power-in-Formula-box-of-THEN... Sent from the Drools: User forum mailing list archive at Nabble.com.

zeeshan

7:23 a.m.

Hi Mike ! I have decomposed the formula into several small parts http://drools.46999.n3.nabble.com/file/n4013423/error.png ....I was trying with Free form DRL, then I validated it...it is giving error.... *[DeathBenefitRule] Unable to Analyse Expression int $interestNumerator=1+($deathBenefit.getInterestRate()/100); int $interestRateNumerator=1; int condition=$deathBenefit.getPolicyTerm()-$deathBenefit.getPolicYear()+1; for(int i=0; i<=condition; ++i ){ $interestRateNumerator=$interestRateNumerator*$interestNumerator; }; double numerator=1-1/$interestRateNumerator; System.out.println(numerator);: [Error: no such identifier: condition] [Near : {... for(int i=0; i<=condition; ++i ){ ....}] ^ [Line: 6, Column: 17]* I put this in the box---> *int $interestNumerator=1+($deathBenefit.getInterestRate()/100); int $interestRateNumerator=1; int condition=$deathBenefit.getPolicyTerm()-$deathBenefit.getPolicYear()+1; for(int i=0; i<=condition; ++i ){ $interestRateNumerator=$interestRateNumerator*$interestNumerator; } double numerator=1-1/$interestRateNumerator; System.out.println(numerator);* -- View this message in context: http://drools.46999.n3.nabble.com/How-to-put-Power-in-Formula-box-of-THEN... Sent from the Drools: User forum mailing list archive at Nabble.com.

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Michael Anstis
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How to put "Power" in Formula box of THEN ?