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<p class="MsoNormal" style="text-autospace:none">Continuing trying to upgrade from drools 5.1 I’ve been finding some strange funnies in rules behavior. Currently I’m using
<span style="font-size:10.0pt;font-family:Consolas;color:teal"><</span><span style="font-size:10.0pt;font-family:Consolas;color:#3F7F7F">droolsVersion</span><span style="font-size:10.0pt;font-family:Consolas;color:teal">></span><span style="font-size:10.0pt;font-family:Consolas;color:black">5.3.0.Beta1</span><span style="font-size:10.0pt;font-family:Consolas;color:teal"></</span><span style="font-size:10.0pt;font-family:Consolas;color:#3F7F7F">droolsVersion</span><span style="font-size:10.0pt;font-family:Consolas;color:teal">></span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas;color:teal"><</span><span style="font-size:10.0pt;font-family:Consolas;color:#3F7F7F">jbpmVersion</span><span style="font-size:10.0pt;font-family:Consolas;color:teal">></span><span style="font-size:10.0pt;font-family:Consolas;color:black">5.1.0.Final</span><span style="font-size:10.0pt;font-family:Consolas;color:teal"></</span><span style="font-size:10.0pt;font-family:Consolas;color:#3F7F7F">jbpmVersion</span><span style="font-size:10.0pt;font-family:Consolas;color:teal">></span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas;color:teal"><</span><span style="font-size:10.0pt;font-family:Consolas;color:#3F7F7F">mvelVersion</span><span style="font-size:10.0pt;font-family:Consolas;color:teal">></span><span style="font-size:10.0pt;font-family:Consolas;color:black">2.1.Beta6</span><span style="font-size:10.0pt;font-family:Consolas;color:teal"></</span><span style="font-size:10.0pt;font-family:Consolas;color:#3F7F7F">mvelVersion</span><span style="font-size:10.0pt;font-family:Consolas;color:teal">><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:teal"><o:p> </o:p></span></p>
<p class="MsoNormal">In our model we’ve got some lists (Yuck I know) and we want to test whether they are not empty, there are three variations of the rules that we could use<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">rule</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas;color:green">"TESTa"</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">when</span></b><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> t : Title(t.getMyList().isEmpty() ==
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">false</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black">)</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">then</span></b><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> logger.debug(drools.getRule().getName() +
</span><span style="font-size:10.0pt;font-family:Consolas;color:green">" "</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> + drools.getTuple());</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">end</span></b><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">rule</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas;color:green">"TESTb"</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">when</span></b><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> t : Title(myList.isEmpty() ==
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">false</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black">)</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">then</span></b><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> logger.debug(drools.getRule().getName() +
</span><span style="font-size:10.0pt;font-family:Consolas;color:green">" "</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> + drools.getTuple());</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">end</span></b><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">rule</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas;color:green">"TESTc"</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">when</span></b><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> t : Title(myList.</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">empty</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black">
== </span><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">false</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black">)</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">then</span></b><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> logger.debug(drools.getRule().getName() +
</span><span style="font-size:10.0pt;font-family:Consolas;color:green">" "</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> + drools.getTuple());</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000">end<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:Consolas;color:#960000"><o:p> </o:p></span></b></p>
<p class="MsoNormal">I’d expect all of these formats to work (particularly c) however only TESTa succeeds, the other two FAIL SILENTLY, failing to match anything but not generating any errors or warnings.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thomas<o:p></o:p></p>
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