[rules-users] Collecting items in a List

[devan.vanreenen at gmail.com]

I'm not sure what I did earlier, but when executing the below rules, I get
the desired results. I insert 20 Alert objects and the rule collects alerts
according to a specific case number, rules and output below

Rules

rule 'Group alerts for a specific case'
dialect 'java'
when
	Alert( $caseNumber : caseNumber, $alertNo: alertNo ) 
    $list : List( ) from collect($alert : Alert( caseNumber == $caseNumber)) 
then
	insertLogical($list);
end

rule 'Print inserted lists'
salience -10
dialect 'java'
when
	$list : List( )
then
	System.out.println("******Printing list******: ");
	System.out.println("******List hashCode: " + $list.hashCode());
	for(Object o : $list){
		System.out.println(o);
	}
end 



Output

******Printing list******: 
******List hashCode: -1902211073
Alert [caseNumber=1021567, alertNo=1]
Alert [caseNumber=1021567, alertNo=2]
Alert [caseNumber=1021567, alertNo=8]
******Printing list******: 
******List hashCode: -68071555
Alert [caseNumber=1012283, alertNo=1]
Alert [caseNumber=1012283, alertNo=2]
Alert [caseNumber=1012283, alertNo=6]
Alert [caseNumber=1012283, alertNo=2]
Alert [caseNumber=1012283, alertNo=8]
Alert [caseNumber=1012283, alertNo=2]
******Printing list******: 
******List hashCode: -485211774
Alert [caseNumber=1022621, alertNo=6]
Alert [caseNumber=1022621, alertNo=6]
Alert [caseNumber=1022621, alertNo=6]
Alert [caseNumber=1022621, alertNo=2]
Alert [caseNumber=1022621, alertNo=1]
Alert [caseNumber=1022621, alertNo=2]
Alert [caseNumber=1022621, alertNo=2]
Alert [caseNumber=1022621, alertNo=8]
******Printing list******: 
******List hashCode: 1815474720
Alert [caseNumber=55506677, alertNo=1]
Alert [caseNumber=55506677, alertNo=2]
Alert [caseNumber=55506677, alertNo=6]



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