Stepan Hilbert created FLEX-33913:
-------------------------------------
Summary: XMLListCollection addItem(item) modifies a parent XMLList
of the item
Key: FLEX-33913
URL: https://issues.apache.org/jira/browse/FLEX-33913
Project: Apache Flex
Issue Type: Bug
Components: .Unspecified - Framework
Affects Versions: Adobe Flex SDK 3.6 (Release), Adobe Flex SDK 4.1
(Release), Apache Flex 4.11.0
Environment: Reproduced with the SDKs above in FP 11.9 on Windows IE;
Likely an issue in all OS/SDK/FP combinations.
Reporter: Stepan Hilbert
Sample code:
{noformat}
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; >
<mx:Script>
<![CDATA[
import mx.collections.XMLListCollection;
import mx.controls.Alert;
protected var mainXML:XML =
<root>
<item id="1"/>
<item id="2"/>
<item id="3"/>
</root>;
protected function
addButton_clickHandler(event:MouseEvent):void
{
trace("Length before adding: " +
mainXML.item.length()); // traces '3'
var some:XMLListCollection = new
XMLListCollection();
for each (var o:Object in mainXML.item) {
some.addItem(o);
}
trace("Length After adding: " +
mainXML.item.length()); // traces '5' BUT SHOULD BE STILL 3
}
]]>
</mx:Script>
<mx:Button label="Add Items" click="addButton_clickHandler(event)" />
</mx:Application>
{noformat}
Result:
mainXML.item XMLList is gets modified - the 2nd and 3rd items are added to it.
That shouldn't happen and can cause very severe issues.
Workaround:
Do not use XMLListCollection. Array or ArrayCollection seem to be unaffected by
this bug.
Related Issues:
This issue might share the same underlying cause: FLEX-21831
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