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<p class=MsoNormal>I am trying to upgrade to the 5.1M2 build from 5.0.1 and am
running into some issues. I have installed the new 5.1 Guvnor and
imported the rules from my 5.0.1 Guvnor instance. <o:p></o:p></p>
<p class=MsoNormal>I then removed the old 5.0.1 drools jars from my app and
replaced them with the 5.1M2 drools jars. I was also added all the
dependent libraries. The code that worked with the 5.0.1 version does not
work with the 5.1M2 version. In 5.0.1 I was constructing the xml and streaming
it into the applyChangeSet method. With 5.1M2 I am just pointing to the
change set xml file that is in the Guvnor. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I am seeing a NullPointerException being thrown in the
processChangeSet method as shown below.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Caused by: java.lang.NullPointerException<o:p></o:p></p>
<p class=MsoNormal> at
org.drools.agent.impl.KnowledgeAgentImpl.processChangeSet(KnowledgeAgentImpl.java:171)<o:p></o:p></p>
<p class=MsoNormal> at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:143)<o:p></o:p></p>
<p class=MsoNormal> at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:130)<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Did I miss something? Am I doing something wrong?
Below is the code that I have.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal> KnowledgeAgentConfiguration
kaconf = KnowledgeAgentFactory.newKnowledgeAgentConfiguration();<o:p></o:p></p>
<p class=MsoNormal> kaconf.setProperty(
"drools.agent.scanDirectories", "true" ); <o:p></o:p></p>
<p class=MsoNormal> kaconf.setProperty("drools.agent.newInstance",
"false");<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> ResourceFactory.getResourceChangeScannerService().start();<o:p></o:p></p>
<p class=MsoNormal> ResourceFactory.getResourceChangeNotifierService().start();<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal> String
url = "http://rulerserver/drools-guvnor/org.drools.guvnor.Guvnor/package/my.rule.package/LATEST/ChangeSet.xml";<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> KnowledgeAgent
kagent = KnowledgeAgentFactory.newKnowledgeAgent( "Configuration",
kaconf );<o:p></o:p></p>
<p class=MsoNormal> kagent.setSystemEventListener(new
MyDroolsListener());<o:p></o:p></p>
<p class=MsoNormal style='text-indent:.5in'>try {<o:p></o:p></p>
<p class=MsoNormal> kagent.applyChangeSet(ResourceFactory.newUrlResource(new
URL(url))); // ERROR IS OCCURING
INSIDE OF applyChangeSet<o:p></o:p></p>
<p class=MsoNormal> }
catch (MalformedURLException e) {<o:p></o:p></p>
<p class=MsoNormal> e.printStackTrace();<o:p></o:p></p>
<p class=MsoNormal> }<o:p></o:p></p>
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