[rules-users] Drools parser error accessing ArrayList.

[groovenarula]

Hi,

I have a situation where I need to iterate over an ArrayList in the RHS of a
rule. The ArrayList is created in the LHS of the rule as follows :

rule "Hello World"
dialect "mvel"
	when
		$cur   	: Message()
		$others	: ArrayList ( size > 0 ) from collect(Message(status ==
$cur.status,  this != $cur ))
	then
		for ( int ctr = 0; ctr < $others.size(); ctr++)
		{
			System.out.println((Message) $others.get(ctr));
		}		
end 

This works in Drools 5.1.1. 

However it gives the following parser error in Drools 5.2.X :

      Unable to Analyse Expression for ( int ctr = 0; ctr < $others.size();
ctr++);
		{
			System.out.println((Message) $others.get(ctr));
		}		;:
      [Error: was expecting type: java.lang.Object; but found type:
<Unknown>]
      [Near : {... for ( int ctr = 0; ctr < $othe ....}]
                      ^
      [Line: 6, Column: 0] : [Rule name='Hello World']

      java.lang.IllegalArgumentException: Could not parse knowledge.
	      at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:50)
	      at com.sample.DroolsTest.main(DroolsTest.java:23)

What am I missing here ? Any insight on a possible solution is appreciated.
This has become a big stumbling block for us to move from 5.1.1 to 5.2.1.

Thanks in advance,
Gurvinder



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