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Mark<br>
siddhartha banik wrote:
<blockquote
cite="mid:c3d0203e0806171310o4e7c384bhe17c1ca7d52069de@mail.gmail.com"
type="cite">
<div> </div>
<div>
<div><span class="785092219-17062008"><font face="Arial" size="2">Hi
All,</font></span></div>
<div><span class="785092219-17062008"></span> </div>
<div><span class="785092219-17062008"><font face="Arial" size="2">I am
using Drools Stateful session with serialized Rule Base & Working
memory for my application. I need to write some rule which will <strong>only</strong>
fire on newly inserted data points in Working Memory. Does Drools
support any such feature which will help me to achieve this ? Any
suggestion, how can I achieve this efficiently?</font></span></div>
<div><span class="785092219-17062008"></span> </div>
<div><span class="785092219-17062008"></span> </div>
<div><span class="785092219-17062008"><font face="Arial" size="2">As
sample, I have written a rule bellow:</font></span><span
class="785092219-17062008"></span></div>
<div>
<p><font face="Arial"><font size="2">global RuleSetOutput
ruleSetOutput</font></font></p>
</div>
<div><span class="785092219-17062008"><font face="Arial" size="2"> rule
"sample_rule"<br>
when<br>
(p4: DataObject(id == 4, stringValue == "230007014")) and<br>
(p14: DataObject(id == 14, stringValue == "230007004")) and<br>
(p10: DataObject(id == 10, stringValue == "230007005")) and<br>
(p11: DataObject(id == 11, stringValue == "230007006")) and<br>
(p12: DataObject(id == 12, stringValue == "230007007")) and<br>
(p13: DataObject(id == 13, stringValue == "230007008"))<br>
then<br>
String ruleID = "sample_rule";<br>
RuleOutput ruleOutput =
RuleEngineHelper.getRuleOutput(ruleSetOutput, ruleID);<br>
ruleOutput.addDataObject(p13);<br>
ruleOutput.addDataObject(p4);<br>
ruleOutput.addDataObject(p11);<br>
ruleOutput.addDataObject(p14);<br>
ruleOutput.addDataObject(p10);<br>
ruleOutput.addDataObject(p12);<br>
end</font></span></div>
<div><span class="785092219-17062008"></span> </div>
<div><span class="785092219-17062008"><font face="Arial" size="2">For
1st execution, I am inserting 6 matching DataObjects into Working
Memory. Rule is getting fired once & those 6 data points are
getting added into RuleOutput. </font></span></div>
<div><span class="785092219-17062008"></span> </div>
<div><span class="785092219-17062008"><font face="Arial" size="2">But
in subsequent rule executions after I insert 6 more matching
DataObjects into Working Memory, Rule is getting fired couple of
times & objects from old executions also getting appended to the
current RuleOutput.</font></span></div>
<div><span class="785092219-17062008"></span> </div>
<div><span class="785092219-17062008"><font face="Arial" size="2">How
can I avoid this ? </font></span></div>
<div><span class="785092219-17062008"></span> </div>
<div><span class="785092219-17062008"><font face="Arial" size="2">Regards</font></span></div>
<div><span class="785092219-17062008"><font face="Arial" size="2">Siddhartha</font></span></div>
<div><span class="785092219-17062008"></span> </div>
<div><span class="785092219-17062008"></span> </div>
</div>
<pre wrap="">
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</pre>
</blockquote>
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