[rules-dev] Agenda.getScheduledActivations() method is throwing NullPointerException

[ganesh.p]

Hi All,

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)
##############

I have attached my source code. 

Thanks and Regards,
Ganesh

  http://www.nabble.com/file/p19429177/RuleDemo.java RuleDemo.java 
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