Re: [rules-users] Help with DefaultAgenda.java

Hello, I have tried to change the source code of DefaultAgenda.Java by adding the code below: //drools orginial sequential code /* while ( continueFiring( fireLimit ) && fireNextItem( agendaFilter ) ) { fireCount++; fireLimit = updateFireLimit( fireLimit ); this.workingMemory.executeQueuedActions(); } */ //code with concurrency InternalAgendaGroup myGroup = (InternalAgendaGroup) getNextFocus(); fireCount = myGroup.size(); for(int i =0; i< fireCount; ++i) { new Thread(new Runnable(){ public void run() { fireNextItem( agendaFilter ); } }).start(); } I am getting an Errorjava.lang.NullPointerException because my code flow is going to consequenceExceptionHandler ! = null exception. else if ( this.consequenceExceptionHandler != null ) { this.consequenceExceptionHandler.handleException( activation, this.workingMemory.getKnowledgeRuntime(), e ); Could you kindly help me with this? I am pasting the exception below and I am using Drools 5.4 Final version. In DA: [Activation rule=Rule 1, act#=0, salience=0, tuple=[fact 0:0:1773684356:1306428912:0:DEFAULT:org.drools.reteoo.InitialFactImpl@4dde85f0] ] Exception in thread "Thread-1" Exception in thread "Thread-0" Exception executing consequence for rule "Rule 1" in defaultpkg: java.lang.NullPointerException In DA WM: org.drools.impl.StatefulKnowledgeSessionImpl@542487b1 In DA Errorjava.lang.NullPointerException In DA: [Activation rule=Rule 2, act#=1, salience=0, tuple=[fact 0:0:1773684356:1306428912:0:DEFAULT:org.drools.reteoo.InitialFactImpl@4dde85f0] ] In DA WM: org.drools.impl.StatefulKnowledgeSessionImpl@542487b1 In DA Errorjava.lang.NullPointerException at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1208) at org.drools.common.DefaultAgenda$1.run(DefaultAgenda.java:1471) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.NullPointerException at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1272) ... 3 more Exception executing consequence for rule "Rule 2" in defaultpkg: java.lang.NullPointerException at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1208) at org.drools.common.DefaultAgenda$1.run(DefaultAgenda.java:1471) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.NullPointerException at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1272) ... 3 more Thanks a lot for the help. Regards, Malory -- View this message in context: http://drools.46999.n3.nabble.com/Help-with-DefaultAgenda-java-tp4022758.... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users