[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.
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