[rules-users] refactoring "complex" conditon to use "in" operator

Greg Barton greg_barton at yahoo.com
Fri Oct 26 14:46:42 EDT 2012 

Also, I tried putting an underscore in front of the variable name, like in your code.  Still no problem with Dools 5.4. (Project attached.)


________________________________
 From: Greg Barton <greg_barton at yahoo.com>
To: Rules Users List <rules-users at lists.jboss.org> 
Sent: Friday, October 26, 2012 1:34 PM
Subject: Re: [rules-users] refactoring "complex" conditon to use "in" operator
 

I couldn't reproduce with Drools 5.4.  If you can recreate the problem with the version of drools you're using on a test project like the one attached submit a JIRA.


________________________________
 From: "Cotton, Ben" <Ben.Cotton at morganstanley.com>
To: Rules Users List <rules-users at lists.jboss.org> 
Sent: Friday, October 26, 2012 1:07 PM
Subject: Re: [rules-users] refactoring "complex" conditon to use "in" operator
 

  
No, that’s not it.  Using “1.0” causes the exact same syntax error.
 
From:rules-users-bounces at lists.jboss.org [mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Greg Barton
Sent: Friday, October 26, 2012 2:03 PM
To: Rules Users List
Subject: Re: [rules-users] refactoring "complex" conditon to use "in" operator
 
Maybe because the 1.0 is in single quotes, and not double quotes, like the others?
 

________________________________
 
From:"Cotton, Ben" <Ben.Cotton at morganstanley.com>
To: Rules Users List <rules-users at lists.jboss.org> 
Sent: Friday, October 26, 2012 12:15 PM
Subject: [rules-users] refactoring "complex" conditon to use "in" operator
 
Hi,
 
The following rule is working well.
 
rule"foo"
when
        Message(_initialStubRate == "1.0") ||
            Message(_initialStubRate == "2.0") || (
                Message(_initialStubRate >= "4.0") &&
                Message(_initialStubRate <= "44.0")
            ) ||
            Message(_initialStubRate == "52.0")
then
    System.out.println("foo");
End
 
To make this logic more amenable to being generically rendered via .DRT template, I want to simplify this rule .  Consider the following re-factoring.
 
rule"bar"
when
         Message(_initialStubRate in(
                '1.0',"2.0",
                    "4.0","5.0","6.0","7.0","8.0","9.0","10.0", "11.0",  "12.0","13.0",
                    "14.0","15.0","16.0","17.0","18.0","19.0","20.0", "21.0",  "22.0","23.0",
                    "24.0","25.0","26.0","27.0","28.0","29.0","30.0", "31.0",  "32.0","33.0",
                    "34.0","35.0","36.0","37.0","38.0","39.0","40.0", "41.0",  "42.0","43.0",
                    "44.0",
                    "52.0")
         )
then
    System.out.println("bar");
end
 
This re-facotred rule produces a syntax error in Eclipse’s .DRL view.   
 
BuildError: Unable to Analyse Expression_initialStubRate == "1.0" || _initialStubRate == "2.0" || _initialStubRate == "4.0" || _initialStubRate == "5.0" || _initialStubRate == "6.0" || _initialStubRate == "7.0" || _initialStubRate == "8.0" || _initialStubRate == "9.0" || _initialStubRate == "10.0" || _initialStubRate == "11.0" || _initialStubRate == "12.0" || _initialStubRate == "13.0" || _initialStubRate == "14.0" || _initialStubRate == "15.0" || _initialStubRate == "16.0" || _initialStubRate == "17.0" || _initialStubRate == "18.0" || _initialStubRate == "19.0" || _initialStubRate == "20.0" || _initialStubRate == "21.0" || _initialStubRate == "22.0" || _initialStubRate == "23.0" || _initialStubRate == "24.0" || _initialStubRate == "25.0" || _initialStubRate == "26.0" || _initialStubRate == "27.0" || _initialStubRate == "28.0" || _initialStubRate == "29.0" || _initialStubRate == "30.0" || _initialStubRate == "31.0" || _initialStubRate == "32.0" ||
 _initialStubRate == "33.0" || _initialStubRate == "34.0" || _initialStubRate == "35.0" || _initialStubRate == "36.0" || _initialStubRate == "37.0" || _initialStubRate == "38.0" || _initialStubRate == "39.0" || _initialStubRate == "40.0" || _initialStubRate == "41.0" || _initialStubRate == "42.0" || _initialStubRate == "43.0" || _initialStubRate == "44.0" || _initialStubRate == "52.0":
[Error: no such identifier: _initialStubRate]
[Near : {... _initialStubRate == "1.0" || _ ....}]
 
 
             ^
[Line: 1, Column: 1]
 
 
What could be wrong?
 
Ben D Cotton III
Morgan Stanley & Co.
OTC Derivatives Clearing Technology 
1221 AOTA Rockefeller Ctr - Flr 27
New York, NY 10020
(212)762.9094
ben.cotton at ms.com 
 
 
 

________________________________
 

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________________________________
 
NOTICE: 
Morgan Stanley is not acting as a municipal advisor and the opinions or views 
contained herein are not intended to be, and do not constitute, advice within 
the meaning of Section 975 of the Dodd-Frank Wall Street Reform and Consumer 
Protection Act. If you have received this communication in error, please destroy 
all electronic and paper copies and notify the sender immediately. 
Mistransmission is not intended to waive confidentiality or privilege. Morgan 
Stanley reserves the right, to the extent permitted under applicable law, to 
monitor electronic communications. This message is subject to terms available at 
the following link: http://www.morganstanley.com/disclaimers If you cannot access these links, please notify us by reply message and we will 
send the contents to you. By messaging with Morgan Stanley you consent to the 
foregoing.

_______________________________________________
rules-users mailing list
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https://lists.jboss.org/mailman/listinfo/rules-users



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rules-users mailing list
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https://lists.jboss.org/mailman/listinfo/rules-users
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