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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">Why not just have the following?<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 "cboFemale"<br>
when<br>
Patient(sex == "F")<o:p></o:p></p>
<p class="MsoNormal">then<o:p></o:p></p>
<p class="MsoNormal">...<o:p></o:p></p>
<p class="MsoNormal">end.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">rule "cboNotBaby"<br>
when<br>
Patient(age > 2)<o:p></o:p></p>
<p class="MsoNormal">then<o:p></o:p></p>
<p class="MsoNormal">...<o:p></o:p></p>
<p class="MsoNormal">end.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">rule "cboNoSex"<br>
when<br>
Patient(sex == "F")<o:p></o:p></p>
<p class="MsoNormal">then<o:p></o:p></p>
<p class="MsoNormal">...<o:p></o:p></p>
<p class="MsoNormal">end.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This has the advantage that rule auditing will identify which condition matches and means that you can use the binding in the rule.<o:p></o:p></p>
<p class="MsoNormal">Alternatively you should be able to do<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">rule "cbo"<br>
when<br>
Patient(sex == "F" or sex == "" or age > 2)<o:p></o:p></p>
<p class="MsoNormal">then<o:p></o:p></p>
<p class="MsoNormal">...<o:p></o:p></p>
<p class="MsoNormal">end.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><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>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:
"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" 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>Michael Anstis<br>
<b>Sent:</b> 26 October 2010 11:56<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] no viable alternative at input 'or'<o:p></o:p></span></p>
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</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I tried a few permutations with 5.1.x<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<div>
<p class="MsoNormal">Nested infix appears to have a few problems, as you describe (although your last example is incomplete); e.g.:-<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Courier New"">rule "Unknown error while parsing. This is a bug. Please contact the Development team."</span><o:p></o:p></p>
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<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">when</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">(or </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span class="apple-style-span"><span style="font-family:"Courier New"">
</span></span><span style="font-family:"Courier New"">(</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span class="apple-style-span"><span style="font-family:"Courier New"">
</span></span><span style="font-family:"Courier New"">or Fact( ) Fact( )</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span class="apple-style-span"><span style="font-family:"Courier New"">
</span></span><span style="font-family:"Courier New"">)</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span class="apple-style-span"><span style="font-family:"Courier New"">
</span></span><span style="font-family:"Courier New"">Fact() </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">)</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">then</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span class="apple-style-span"><span style="font-family:"Courier New"">
</span></span><span style="font-family:"Courier New"">//Something</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Courier New"">end </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Non-nested infix looked OK:-<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">rule "compiles OK - 1"</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">when</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">(or <span class="apple-style-span">Fact( ) Fact( ) Fact()) </span></span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span class="apple-style-span"><span style="font-family:"Courier New"">then</span></span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span class="apple-style-span"><span style="font-family:"Courier New"">
</span></span><span style="font-family:"Courier New"">//Something</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">end </span><o:p></o:p></p>
</div>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Post-fix appears OK:-<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">rule "compiles OK - 2"</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">when</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">(</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New""> Fact() or </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New""> Fact()</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">) or </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">Fact() </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span class="apple-style-span"><span style="font-family:"Courier New"">then</span></span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span class="apple-style-span"><span style="font-family:"Courier New"">
</span></span><span style="font-family:"Courier New"">//Something</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">end</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">Based on my limited test it appears to be a bug and my advice would be to raise a JIRA.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">As a work around you can change your rules in post-fix notation.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">With kind regards,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">Mike<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
</div>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New""> </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">On 26 October 2010 11:09, Swindells, Thomas <<a href="mailto:TSwindells@nds.com">TSwindells@nds.com</a>> wrote:<o:p></o:p></p>
<p class="MsoNormal">What are you actually trying to achieve?<br>
It would probably be a lot cleaner and better just to write these as separate rules - one for each case you want to consider.<br>
<br>
Thomas<o:p></o:p></p>
<div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
> -----Original Message-----<br>
> From: <a href="mailto:rules-users-bounces@lists.jboss.org">rules-users-bounces@lists.jboss.org</a> [mailto:<a href="mailto:rules-users-">rules-users-</a><br>
> <a href="mailto:bounces@lists.jboss.org">bounces@lists.jboss.org</a>] On Behalf Of chrbonte<br>
> Sent: 26 October 2010 10:52<br>
> To: <a href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a><br>
> Subject: [rules-users] no viable alternative at input 'or'<br>
><br>
><br>
> Hi<br>
><br>
> I'm struggling with the rule syntax. I took over this drools project of a<br>
> collegue who left the company and am struggling with a bug in our<br>
> application.<br>
><br>
> The following works:<br>
><br>
> rule "cbo2"<br>
> when<br>
> (or<br>
> Patient(sex == "F")<br>
> Patient(sex == "")<br>
> )<br>
> then<br>
> ...<br>
> end<br>
><br>
> What doesn't work is the following:<br>
><br>
> rule "cbo"<br>
> when<br>
> (or<br>
> (or<br>
> Patient(sex == "F")<br>
> Patient(age > 2)<br>
> )<br>
> Patient(sex == "")<br>
> )<br>
> then<br>
> ...<br>
> end<br>
><br>
> AND<br>
><br>
> rule "cbo"<br>
> when<br>
> (or<br>
> (or<br>
> Patient(sex == "F")<br>
> Patient(age > 2)<br>
> )<br>
> )<br>
> then<br>
> ...<br>
> end<br>
><br>
> -------------------<br>
><br>
> Can someone please point me in the right direction or explain to me why I<br>
> get "no viable alternative at input 'or' with the last 2 examples?<br>
><br>
> Regards<br>
> Christophe<br>
> --<br>
> View this message in context: <a href="http://drools-java-rules-" target="_blank">
http://drools-java-rules-</a><br>
> <a href="http://engine.46999.n3.nabble.com/no-viable-alternative-at-input-or-" target="_blank">
engine.46999.n3.nabble.com/no-viable-alternative-at-input-or-</a><br>
> tp1772702p1772702.html<br>
> Sent from the Drools - User mailing list archive at Nabble.com.<br>
> _______________________________________________<br>
> rules-users mailing list<br>
> <a href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a><br>
> <a href="https://lists.jboss.org/mailman/listinfo/rules-users" target="_blank">
https://lists.jboss.org/mailman/listinfo/rules-users</a><br>
<br>
<o:p></o:p></p>
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