[FLEX-26792] ArrayCollection.addAll with a filter function raise a "out of bounds" RangeError

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Adobe Flex SDK 4.1 (Release)
• Component/s: Collections
• Environment: Affected OS(s): Mac; Affected OS(s): Mac OS 10.5; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 15/Feb/11 02:09
• Updated: 22/Sep/11 18:44
• Resolved: 26/Aug/11 16:14

Description

Steps to reproduce:
1. create an ArrayCollection
2. apply a filterfunction
3. add elements to this collection with the addAll function (at least one of the element has to be hidden by the filterfunction)

var list:ArrayCollection = new ArrayCollection();
list.filterFunction = filter;
list.refresh();
var items:ArrayList = new ArrayList([1,2,3,4,5]);
list.addAll(items);

public function filter(obj:Object) : Boolean {
var n:Number = obj as Number;
return n<2;
}

Actual Results:
the addAll function raise an RangeError error

Expected Results:
the items should be added an the filter function should be applied correctly

Workaround (if any):
By debugging the SDK, i've that the bug occurs in addAllAt, the workaround is to create a class which extends ArrayCollection and overrides addAllAt this way :

public function addAllAt(addList:IList, index:int):void
{
var at:int = i+index;
if(at>length)

{ at=length; }

addItemAt(addList.getItemAt, at);
}