[jboss-jira] [JBoss JIRA] Created: (JBRULES-2257) Wrong condition evaluation if the condition contains a variable assignment

[Udo Klinkmüller (JIRA)]

Wrong condition evaluation if the condition contains a variable assignment  
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                 Key: JBRULES-2257
                 URL: https://jira.jboss.org/jira/browse/JBRULES-2257
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: drools-core
    Affects Versions: 5.0.1.FINAL
         Environment: Mac OS X, iMac, Eclipse Galileo (3.5)
            Reporter: Udo Klinkmüller
            Assignee: Mark Proctor


I have a rule which checks variables of two equal objects in an old and a new version. If I work with the variable daclaration $nd1 then the consequence is NOT executed although it should.

This is the version of the rule in that the consequence is not executed although it should: 

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package apm.event.resource;

#list any import classes here.
import java.util.*;
import de.fraport.test.*;

#declare any global variables here
global Collection results;

rule "Test-Del"
	salience 900 
	when
		#conditions
		TestMainObjectPair( $omo: oldMainObject != null, $nmo: newMainObject )
		TestObject( date1 == null, $od2: date2 != null, $os1: strVal1 != null ) from $omo.testObject
		TestObject( $nd1: date1 != null || date2 != $od2 || strVal1 != $os1 ) from $nmo.testObject

	then 
		#actions
		System.out.println("****** Executing consequence of rule Test-Del nd1="+ $nd1 +" ...");
		results.add($nto);
end

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This is the rule version which delivers the expected result (without using $nd1):

------------------------------------------

package apm.event.resource;

#list any import classes here.
import java.util.*;
import de.fraport.test.*;

#declare any global variables here
global Collection results;

rule "Test-Del"
	salience 900 
	when
		#conditions
		TestMainObjectPair( $omo: oldMainObject != null, $nmo: newMainObject )
		TestObject( date1 == null, $od2: date2 != null, $os1: strVal1 != null ) from $omo.testObject
		$nto: TestObject( date1 != null || date2 != $od2 || strVal1 != $os1 ) from $nmo.testObject

	then 
		#actions
		System.out.println("****** Executing consequence of rule Test-Del nd1="+ $nto.getDate1() +" ...");
		results.add($nto);
end

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