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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi Mohamed,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The logical ‘OR’ operator internally will create two different rules
and both can fire, hence you are getting two different firings. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>What you need to use is the following operator , ‘||’. This
should treat it as one rule and fire if either of the two conditions are true.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Example:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal>rule "test"<o:p></o:p></p>
<p class=MsoNormal>when<o:p></o:p></p>
<p class=MsoNormal>order: Order<o:p></o:p></p>
<p>(<br>
<br>
exists ( condition-1 with child objects || condition-2 with child
objects) <br>
)<o:p></o:p></p>
<p>then <o:p></o:p></p>
<p> SOP("order id "+order.getId());<o:p></o:p></p>
<p>result : <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <b>On Behalf Of </b>Mohamed Riyaz<br>
<b>Sent:</b> Monday, September 08, 2008 6:12 PM<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] Drools ruturn multiple results based on child
objects data length<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal>Thanks Vikrant.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>I have one more qurey on 'OR' logical operator for the
following scenario:<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>I want the the boolen result from parent object which satisfies
two different condition sets with child objects. I made the rule which is
generated duplicated<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>results if both conditions are satisfied. <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>rule "test"<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>when<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>order: Order<o:p></o:p></p>
</div>
<p>(<br>
<br>
exists ( condition-1 with child objects)<br>
<br>
or <br>
<br>
exists (condition-2 with child objects)<o:p></o:p></p>
<p>)<o:p></o:p></p>
<p>then <o:p></o:p></p>
<p> SOP("order id "+order.getId());<o:p></o:p></p>
<p>result : <o:p></o:p></p>
<p> order id 1000<o:p></o:p></p>
<p> order id 1000<o:p></o:p></p>
<p> <o:p></o:p></p>
<p>return the results in twice if both the conditions (cond-1 & cond-2) are
satisfied. It just combine <br>
both results and behaves like 'union all' instead of 'union' function.<o:p></o:p></p>
<div>
<p class=MsoNormal><br>
Can you help on this?<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>regards,riyaz<br>
<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span class=gmailquote>On 9/8/08, <b>Vikrant Yagnick</b>
<<a href="mailto:VikrantY@mastek.com">VikrantY@mastek.com</a>> wrote:</span>
<o:p></o:p></p>
<div>
<div>
<p><span style='font-size:11.0pt;color:#1F497D'>My feeling after reading this
post is that you need to execute a rule, if some child object exists.</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>I suggest using the Exists
Feature in Drools for doing something like that.</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>It would be the same thing if
you are writing SQL. If you join a Master Table with child tables you will get
as many records as there are child records for each master record.</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>However, if you only want one
master record if there are child record, you would need to use the exists
statement.</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>Example:</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p><span class=q>rule "Multiple results set"</span><br>
<span class=q>when </span><br>
<span class=q> </span><br>
<span class=q> order: Order</span><br>
exists ( Invoice from order.invoices)<o:p></o:p></p>
<p> then <br>
<br>
System.out.println("Rule Example (Multiple results
set)"+order.getId());<br>
end;<o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>Cheers,</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>Vikrant </span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p><b><span style='font-size:10.0pt'>From:</span></b><span style='font-size:
10.0pt'> <a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>
[mailto:<a href="mailto:rules-users-bounces@lists.jboss.org" target="_blank">rules-users-bounces@lists.jboss.org</a>]
<b>On Behalf Of </b>Mohamed Riyaz<br>
<b>Sent:</b> Monday, September 08, 2008 12:05 PM<br>
<b>To:</b> <a href="mailto:rules-users@lists.jboss.org" target="_blank">rules-users@lists.jboss.org</a><br>
<b>Subject:</b> [rules-users] Drools ruturn multiple results based on child
objects data length</span><o:p></o:p></p>
</div>
<div>
<p> <o:p></o:p></p>
<div>
<p> <o:p></o:p></p>
</div>
<div>
<p>Hi,<o:p></o:p></p>
</div>
<div>
<p> <o:p></o:p></p>
</div>
<div>
<p>In one-to-many relationship object type, Drools generate multiple results
based on child objects data length. ie. No of child records<br>
belongs to parent object. I wanted the RHS part should be executed only if
conditions imposed<br>
on child object satisfies.<o:p></o:p></p>
</div>
<p>I have two facts with 1-* relationship defined in object mapping.<o:p></o:p></p>
<p>class Invoice{}<o:p></o:p></p>
<p>class Order{<o:p></o:p></p>
<p>private Set<Invoice> invoices;<o:p></o:p></p>
<p>}<o:p></o:p></p>
<p><strong>I wanted RHS should be executed with only one result
irrespective of child records length.</strong><o:p></o:p></p>
<p>rule "Multiple results set"<br>
when <br>
<br>
order: Order() <br>
invoice : Invoice() from order.invoices<br>
<o:p></o:p></p>
<p> then <br>
<br>
System.out.println("Rule Example (Multiple results
set)"+order.getId());<br>
end;<o:p></o:p></p>
<p>Result: <br>
Rule Example (Multiple results set)1000<br>
Rule Example (Multiple results set)1000<o:p></o:p></p>
<p><br>
Please help me in resolving this issue.<o:p></o:p></p>
<p>Regards,<br>
Riyaz<o:p></o:p></p>
<p style='margin-bottom:12.0pt'> <o:p></o:p></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p>
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<p class=MsoNormal><span style='color:black'><br>
MASTEK LTD.<br>
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In the US, we're called MAJESCOMASTEK<br>
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<br><br><table bgcolor=white style="color:black"><tr><td><br>MASTEK LTD.<br>
Mastek in NASSCOM's 'India Top 20' Software Service Exporters List.<br>
In the US, we're called MAJESCOMASTEK<br>
<br>
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Opinions expressed in this e-mail are those of the individual and not that of Mastek Limited, unless specifically indicated to that effect. Mastek Limited does not accept any responsibility or liability for it. This e-mail and attachments (if any) transmitted with it are confidential and/or privileged and solely for the use of the intended person or entity to which it is addressed. Any review, re-transmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. This e-mail and its attachments have been scanned for the presence of computer viruses. It is the responsibility of the recipient to run the virus check on e-mails and attachments before opening them. If you have received this e-mail in error, kindly delete this e-mail from desktop and server.<br>
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