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<p class="MsoNormal">Hello all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m getting a NullPointerException when calling org.kie.api.definition.type.FactType.set(Object, String, Object) and also when I call org.kie.api.definition.type.FactType.setFromMap(Object, Map<String, Object>). The exception stack trace
points to the same line in both cases:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:red">Exception in thread "main"
</span><u><span style="font-size:10.0pt;font-family:Consolas;color:#0066CC">java.lang.NullPointerException</span></u><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:red"> at org.drools.core.factmodel.ClassDefinition.set(</span><u><span style="font-size:10.0pt;font-family:Consolas;color:#0066CC">ClassDefinition.java:255</span></u><span style="font-size:10.0pt;font-family:Consolas;color:red">)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:red"> ...<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Doing some debugging, I found that the getFieldAccessor() call in org.drools.core.factmodel.ClassDefinition, line 255, is returning null, which is what’s causing this. I didn’t dig deeper than that, though.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I created the data model in Drools Workbench 6.0.1 final and I’ve double-checked that the field I’m passing in to set a value exists on the object. Below is my code and it’s throwing the NPE on the last line.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m going to try to use standard Java reflection instead for now, but any assistance on this would be appreciated. I can provide any other code, the KieModule JAR produced by Workbench, or anything else, if needed.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> KieServices ks = KieServices.Factory.<i>get</i>();</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"> KieContainer kContainer = ks.newKieContainer(ks.newReleaseId(</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">"com.hp.pa.sample"</span><span style="font-size:10.0pt;font-family:Consolas;color:black">,
</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">"realestate"</span><span style="font-size:10.0pt;font-family:Consolas;color:black">,
</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">"LATEST"</span><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"> KieSession kSession = kContainer.newKieSession();</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"> KieBase kBase = kSession.getKieBase();</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"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> FactType agentAssignmentType = kBase.getFactType(</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">"com.hp.pa.sample.realestate"</span><span style="font-size:10.0pt;font-family:Consolas;color:black">,
</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">"AgentAssignmentData"</span><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"> FactType property4SaleType = kBase.getFactType(</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">"com.hp.pa.sample.realestate"</span><span style="font-size:10.0pt;font-family:Consolas;color:black">,
</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">"PropertyForSale"</span><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><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:#7F0055">if</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black">
(agentAssignmentType == </span><b><span style="font-size:10.0pt;font-family:Consolas;color:#7F0055">null</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black"> || property4SaleType ==
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#7F0055">null</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"> System.</span><i><span style="font-size:10.0pt;font-family:Consolas;color:#0000C0">err</span></i><span style="font-size:10.0pt;font-family:Consolas;color:black">.println(</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">"Could
not find a FactType"</span><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><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"> Object agentAssignment =
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#7F0055">null</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"> Object property4Sale =
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#7F0055">null</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:#7F0055">try</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"> agentAssignment = agentAssignmentType.newInstance();</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"> property4Sale = property4SaleType.newInstance();</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:#7F0055">catch</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black"> (InstantiationException e) {</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"> e.printStackTrace();</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:#7F0055">catch</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black"> (IllegalAccessException e) {</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"> e.printStackTrace();</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"><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"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black"> property4SaleType.set(property4Sale,
</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">"city"</span><span style="font-size:10.0pt;font-family:Consolas;color:black">,
</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">"San Diego"</span><span style="font-size:10.0pt;font-family:Consolas;color:black">);</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:black">Ronak Patel<br>
</span></b><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#717172">Software Designer<br>
HP Autonomy</span><o:p></o:p></p>
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