[jboss-jira] [JBoss JIRA] Created: (JBRULES-1765) Agenda.getScheduledActivations() method is throwing NullPointerException

[Ganesh Patkar (JIRA)]

Agenda.getScheduledActivations() method is throwing NullPointerException
------------------------------------------------------------------------

                 Key: JBRULES-1765
                 URL: https://jira.jboss.org/jira/browse/JBRULES-1765
             Project: JBoss Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 4.0.7, 4.0.6, 4.0.5, 4.0.4
         Environment: Hardware: Intel P4 3.2GHz
OS: Windows XP Professional Version 2002 SP3
            Reporter: Ganesh Patkar
            Assignee: Mark Proctor


I have a init rule in which i am accessing Agenda.getScheduledActivations() method. But it throws NullPointerException. I have tried with both drools-core 4.0.4 and drools-core 4.0.7 jar files. 

Here are the rules: 

package com.demo.rules; 

import java.util.Date; 

import org.drools.Agenda; 
import org.drools.spi.Activation; 

import com.demo.metric.TxInfo; 
import com.demo.rules.RuleDemo; 

function void removeActivationsForRule(String ruleName, Agenda agenda) { 
        Activation[] actArr; 
        Activation act; 
        int len; 

        try { 
                actArr = agenda.getScheduledActivations(); 
                len = actArr.length; 

                System.out.println("*** Scheduled Activation[] Length : " + len); 
                for(int i=0;i<len;++i) { 
                        act = actArr[i]; 
                        if(act.getRule().getName().equals(ruleName)) { 
                                System.out.println("*** ACTIVATION : " + act + " IS REMOVED ***"); 
                                act.remove(); 
                        } 
                } 
        } catch (NullPointerException ex) { 
                System.out.println("##############"); 
                ex.printStackTrace(); 
                System.out.println("##############"); 
        } 
} 

rule 'init_rule1' 
salience 10 
when TxInfo(totalTime <= 100) 
then 
        removeActivationsForRule("rule1", drools.getWorkingMemory().getAgenda()); 
end 

rule 'rule1' 
duration 60000 
when TxInfo(totalTime > 100) 
then 
        System.out.println("**** FIRING RULE : rule1 : -" + new Date() + "- ****"); 
end 


Here is the stack trace: 

############## 
java.lang.NullPointerException 
        at org.drools.common.DefaultAgenda.getScheduledActivations(DefaultAgenda.java:351) 
        at com.demo.rules.RuleDemo.removeScheduledActivations(RuleDemo.java:132) 
        at com.demo.rules.RuleDemo.beforeActivationFired(RuleDemo.java:175) 
        at org.drools.event.AgendaEventSupport.fireBeforeActivationFired(AgendaEventSupport.java:103) 
        at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:540) 
        at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:518) 
        at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:475)############## 
############## 

        at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:439) 
        at com.demo.rules.RuleDemo.fireRule(RuleDemo.java:116) 
        at com.demo.rules.RuleDemo.main(RuleDemo.java:221) 
java.lang.NullPointerException 
        at org.drools.common.DefaultAgenda.getScheduledActivations(DefaultAgenda.java:351) 
        at com.demo.rules.RemoveActivationsForRule.removeActivationsForRule(RemoveActivationsForRule.java:27) 
        at com.demo.rules.Rule_init_rule1_0.consequence(Rule_init_rule1_0.java:7) 
        at com.demo.rules.Rule_init_rule1_0ConsequenceInvoker.evaluate(Rule_init_rule1_0ConsequenceInvoker.java:22) 
        at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:554) 
        at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:518) 
        at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:475) 
        at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:439) 
        at com.demo.rules.RuleDemo.fireRule(RuleDemo.java:116) 
        at com.demo.rules.RuleDemo.main(RuleDemo.java:221) 
############## 



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