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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>To accomplish this is largely a “renaming”
operation. They are syntactically the same. I did a similar thing a few
months ago and it mostly involved renaming everything from RuleXXX to
KnowledgeXXX.<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>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<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>Chetan Mahadev<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, October 26, 2009
4:10 PM<br>
<b><span style='font-weight:bold'>To:</span></b> rules-users@lists.jboss.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [rules-users] Is there
any way to hook-up Drools 4.0 RuleBase(session) to a Drools 5.0 KnowledgeBase
(session) ??</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="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hi ,<o:p></o:p></span></font></p>
</div>
<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>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>We have been using drools 4.0 in our application. All the rules are
loaded using RuleBase and PackageBuilder.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>The application is pretty old, and has got lot of work into it.<o:p></o:p></span></font></p>
</div>
<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>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Now we want to use Drools 5.0 CEP (Fusion) along with the old rules
(based on drools 4.0).<o:p></o:p></span></font></p>
</div>
<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>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>But the problem , is, how can we hook-up the old "RuleBase"
based sessions with the "KnowledgeBase" sessions of Drools 5.0??<o:p></o:p></span></font></p>
</div>
<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>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>The use case is:<o:p></o:p></span></font></p>
</div>
<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>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>1.Fact enters the system ( asserted using Rulebase), is enriched by
rules (Based on Drools 4.0)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>2.The same fact will be treated as EVENT (for CEP), for
further correlation of Events (facts) using KnowledgeBase as
proposed i Drools 5.0.<o:p></o:p></span></font></p>
</div>
<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>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I am facing difficulty in hooking up the two sessions. Is there an
way??<o:p></o:p></span></font></p>
</div>
<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>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Following is the test i did. ( <a
href="http://drools.pastebin.com/m7d6c613b">http://drools.pastebin.com/m7d6c613b</a>)<o:p></o:p></span></font></p>
</div>
<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>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Can anybody help??<o:p></o:p></span></font></p>
</div>
<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>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>IN MY JAVA CODE<o:p></o:p></span></font></p>
</div>
<div>
<div>
<div>
<div>
<ol start=1 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>//load up the rulebase<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=2 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
RuleBase ruleBase = readRule(); // Read and load
rules frm a packagebuilder()<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=3 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
StatefulSession rBaseSession =
ruleBase.newStatefulSession();<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=4 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
Message message = new Message();<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=5 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
message.setMessage( "Hello World" );<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=6 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
message.setStatus( Message.HELLO );<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=7 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
rBaseSession.insert( message );<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=8 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=9 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
@@//Load KnoweledgeBase
<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=10 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
KnowledgeBase kbase = loadRuleBase(); // I set options for
EventProcessing in loadRuleBase()<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=11 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
KnowledgeSessionConfiguration conf = <o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=12 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
KnowledgeBaseFactory.newKnowledgeSessionConfiguration();<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=13 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
((SessionConfiguration) conf).setClockType( ClockType.REALTIME_CLOCK );<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=14 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
StatefulKnowledgeSession kbaseSession =
kbase.newStatefulKnowledgeSession(conf,null);<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=15 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=16 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'>
rBaseSession.fireAllRules(); <o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=17 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><font size=3 face="Courier New"><span
style='font-size:12.0pt;font-family:"Courier New"'> <o:p></o:p></span></font></li>
</ol>
</div>
</div>
<p class=de1><font size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=de1><font size=3 face="Courier New"><span style='font-size:12.0pt;
font-family:"Courier New"'>IN MY RULE FILE</span></font><o:p></o:p></p>
<div>
<ol start=1 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo2'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>rule "Hello World"<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=2 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo2'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> when<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=3 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo2'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>
$m : Message( status == Message.HELLO, message : message )<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=4 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo2'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> then<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=5 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo2'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>
System.out.println( message ); <o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=6 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo2'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>
Message message2 = new Message();<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=7 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo2'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>
message2.setMessage( "Hello World" );<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=8 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo2'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>
message2.setStatus( Message.HELLO );<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=9 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo2'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=10 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo2'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>
WorkingMemoryEntryPoint eventsignaturestream =
drools.getEntryPoint("EVENT SIGNATURE STREAM") ; // I Get
a NULLPOINTER EXCEPTION here<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=11 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo2'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>
eventsignaturestream.insert(message2);<o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=12 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo2'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></li>
</ol>
</div>
<div>
<ol start=13 type=1>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo2'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>end<o:p></o:p></span></font></li>
</ol>
</div>
</div>
</div>
<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>
<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>
<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>
<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>
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