[jboss-jira] [JBoss JIRA] Closed: (JBRULES-907) When globals are used in a lhs of a rule, you cannot create a new working memory

[Mark Proctor (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBRULES-907?page=all ]

Mark Proctor closed JBRULES-907.
--------------------------------

    Resolution: Won't Fix

fixed in 4.0

> When globals are used in a lhs of a rule, you cannot create a new working memory
> --------------------------------------------------------------------------------
>
>                 Key: JBRULES-907
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-907
>             Project: JBoss Rules
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 3.0.6
>         Environment: JDK 1.5.0 under Windows XP 
>            Reporter: Krishnan Sivaramakrishna Iyer
>         Assigned To: Mark Proctor
>            Priority: Blocker
>             Fix For: 3.0.6
>
>
> Rule file
> #created on: May 16, 2007
> package com.sample
> #list any import classes here.
> import com.sample.Line;
> #declare any global variables here
> global Line newLine;
> rule "Generate new object line"
> 	when 
> 		eval (newLine.getLine().equals(""))
> 	then 
> 		System.out.println("This is an empty line.");
> end
> /**
>  * 
>  */
> package com.sample;
> import java.lang.String;
> /**
>  * @author kiyer
>  *
>  */
> public class Line {
> 	private String line;
> 	
> 	public Line(String line) {
> 		setLine(line);
> 	}
> 	/**
> 	 * @return the line
> 	 */
> 	public String getLine() {
> 		return line;
> 	}
> 	/**
> 	 * @param line the line to set
> 	 */
> 	public void setLine(String line) {
> 		this.line = line;
> 	}
> 	
> }
> In the main program, call the following 
>             final RuleBase ruleBase = readRule();
>             final WorkingMemory session = ruleBase.newWorkingMemory();
> You will see the following exception 
> org.drools.RuntimeDroolsException: java.lang.NullPointerException
> 	at org.drools.rule.EvalCondition.isAllowed(Unknown Source)
> 	at org.drools.reteoo.EvalConditionNode.assertTuple(Unknown Source)
> 	at org.drools.reteoo.LeftInputAdapterNode.createAndAssertTuple(Unknown Source)
> 	at org.drools.reteoo.LeftInputAdapterNode.assertObject(Unknown Source)
> 	at org.drools.reteoo.ObjectSource.propagateAssertObject(Unknown Source)
> 	at org.drools.reteoo.ObjectTypeNode.assertObject(Unknown Source)
> 	at org.drools.reteoo.Rete.assertObject(Unknown Source)
> 	at org.drools.reteoo.ReteooRuleBase.assertObject(Unknown Source)
> 	at org.drools.reteoo.ReteooRuleBase.newWorkingMemory(Unknown Source)
> 	at org.drools.common.AbstractRuleBase.newWorkingMemory(Unknown Source)
> 	at com.sample.CfiTest.main(CfiTest.java:24)
> Caused by: java.lang.NullPointerException
> 	at com.sample.Rule_Generate_new_object_line_0.eval0(Rule_Generate_new_object_line_0.java:10)
> 	at com.sample.Rule_Generate_new_object_line_0Eval0Invoker.evaluate(Rule_Generate_new_object_line_0Eval0Invoker.java:18)
> 	... 11 more

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira