[rules-users] Drools parser error accessing ArrayList.

[groovenarula]

laune,

Unfortunately, the earlier test worked when I set the dialect to "java". It
does not work when it's set to "mvel". 

When the rule is written as follows :

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

I am now getting the following error :

    Unable to Analyse Expression for ( int ctr = 0; ctr < $others.size();
ctr++ ) {
			System.out.println("Got message : " + (Message) others.get(i));
		}		;:
    [Error: unable to resolve method using strict-mode:
org.drools.spi.KnowledgeHelper.$others()]
    [Near : {... int ctr = 0; ctr < $others.size(); ctr++ ) { ....}]
                                ^
    [Line: 7, 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)

It looks like for some reason, the parser is unable to decipher the $other. 

Any insight into what could cause this ?

Thanks in advance,

Gurvinder


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