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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Wendy, <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks for helping me out so far. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I have another question. What if I have
all my “RAM” objects inserted into working memory. How
should I write my rule’s “when” portion to get a collection
of all the RAM objects matching type “DDR” ? In other words,
can I get collection of facts assigned to a variable and use it in the
“then” part ?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Abhay<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>==================================<o:p></o:p></span></font></p>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <b><span style='font-weight:bold'>On
Behalf Of </span></b>Wendy Mungovan<br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, May 06, 2011 5:47 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Rules Users List<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [rules-users] Basic
rules question</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=black face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:black'>Q2:<br>
So the rule would be something like:<br>
<br>
rule "RAM type"<br>
when<br>
$product: Product(type == "laptop");<br>
then<br>
//you are looking for the best way to set valid RAM
types in the then part of the rule?<br>
$product.setRamType("DDR");<br>
//or<br>
$product.setValidRamOptions( getValidRamOptions("DDR"));<br>
end<br>
<br>
where getValidRamOptions would be a custom function included through 'import
function' so you can then load the choices from some where else. Or if
RamOptions were an object in memory you could have a rule like:<br>
<br>
rule "RAM type"<br>
when<br>
$product: Product(type == "laptop");<br>
$ramOptions: RAMOptions(type == "DDR");<br>
<br>
then<br>
$product.setValidRamOptions( $ramOptions.getList());<br>
end<br>
<br>
<br>
<br>
<br>
Wendy<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>==================================<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Abhay Chaware<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span style='font-size:
7.5pt;font-family:Arial;color:navy'>Sr. Designer | KPIT Cummins Infosystems Ltd
| Board: +91 020 6652 5000 | Extn: 2989 | abhay.chaware@kpitcummins.com
|www.kpitcummins.com </span></font><font color=navy><span
style='color:navy'><o:p></o:p></span></font></p>
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style='font-size:11.0pt;font-family:Webdings;color:black'> </span></font><font
size=1 color=green face=Tahoma><span style='font-size:7.5pt;font-family:Tahoma;
color:green'>Please consider the environment before printing this e-mail</span></font><o:p></o:p></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <b><span style='font-weight:bold'>On
Behalf Of </span></b>Wendy Mungovan<br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, May 06, 2011 5:47 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Rules Users List<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [rules-users] Basic
rules question</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial'>Abhay,<br>
Q1: I think that this will depend on how many different products
you have. If there is a small number it is more straight forward to have
a rule for each one (so the 2nd option). This allows all you logic to be
in one place. If there are a large number of products and writing a rule
for each one is intractable you probably would want to look into some
generalizations of the rules. Is that helpful?<br>
<br>
Q2: I'm not quite sure what you are getting at in Q2. Are you
trying to write validation rules or rules that are modifying the facts?<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3 face=Arial><span
style='font-size:12.0pt;font-family:Arial'>Wendy<o:p></o:p></span></font></p>
<div>
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face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
<hr size=1 width="100%" align=center>
</span></font></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Abhay B.
Chaware <Abhay.Chaware@kpitcummins.com><br>
<b><span style='font-weight:bold'>To:</span></b> "<st1:PersonName w:st="on">rules-users@lists.jboss.org</st1:PersonName>"
<<st1:PersonName w:st="on">rules-users@lists.jboss.org</st1:PersonName>><br>
<b><span style='font-weight:bold'>Sent:</span></b> Fri, May 6, 2011 4:59:46 AM<br>
<b><span style='font-weight:bold'>Subject:</span></b> [rules-users] Basic rules
question</span></font><o:p></o:p></p>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am a newbie to rule based applications and trying to get
the concept of rules. I have couple of questions about rules to start with, not
specifically about Drools though.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Q1 - Should rules be data/model specific or can/should they
be generic or both</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>==========================================================</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>e.g. </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>If selected product “TYPE” is
“laptop”, then category “RAM” should have all
“DDR” type items compatible ( selecting items matching certain
property )</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>OR</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>If selected product is “IBM T42”, then category
“RAM” should have “512MB DDR” , “1024MB
DDR”, “2048MB DDR” compatible. ( assigning individual
items in rules )</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>OR</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Combination of both</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Q2 – How should be the data modeled in above case</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>==========================================================</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>e.g. </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>in product master, each item ( e.g. T40, T42 ) should have a
“TYPE” ( e.g. desktop or laptop ) , all items in category
“RAM” should have a “TYPE” ( e.g. DDR ) and then
control the assignment of RAM options to the PRODUCT through Rule using
“DDR” type ?</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>OR</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>in product master, each item ( e.g. T40, T42 ) should have a
“TYPE” ( e.g. desktop or laptop ) , all items in category
“RAM” should have a “compatibleProduct” column (
e.g. desktop or laptop ) and control the assignment of RAM to PRODUCT through
“dynamic” rules by selecting all the RAMs by passing the
“TYPE” of the product to the database handler.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Am I making my point clear ?</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Abhay</span></font><o:p></o:p></p>
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