[FLEX-34440] 'Bookmark no longer valid' CursorError caused by HierarchicalCollectionView's conversion of CollectionEventKind.REPLACE into CollectionEventKind.REMOVE

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Apache Flex 4.13.0
• Fix Version/s: Apache Flex 4.14.0
• Component/s: Advanced Data Grid, mx: Tree
• Assignee: Mihai Chira
• Reporter: Mihai Chira
• Created: 23/Jul/14 14:45
• Updated: 21/Aug/14 09:23
• Resolved: 21/Aug/14 09:23

Description

Steps to reproduce A:
Run HierarchicalCollectionViewCursor_FLEX_34440_Test.as against a previous version of HierarchicalCollectionViewCursor/HierarchicalCollectionView/LeafNodeCursor.

Steps to reproduce B:

1. Create a HierarchicalCollectionView with the structure below
2. Create a HierarchicalCollectionViewCursor, and call seek(new CursorBookmark(10));
3. Call setItemAt(new DataNode*("Replaced Node"), 1) on the collection of companies (effectively replacing "Region(2) -> City(1) -> Company(2)TBR" with a new node)

Expected behaviour: no error.
Actual behaviour: this runtime error is thrown:
Error: Bookmark no longer valid.
at ListCollectionViewCursor/seek()[C:\Users\mihaichira\workspaceFlex\FlexSDKSource\sdk\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:2522]
at mx.collections::HierarchicalCollectionViewCursor/collectionChangeHandler()[C:\Users\mihaichira\workspaceFlex\TFC-10693\src\mx\collections\HierarchicalCollectionViewCursor.as:1296]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.collections::HierarchicalCollectionView/nestedCollectionChangeHandler()[C:\Users\mihaichira\workspaceFlex\TFC-10693\src\mx\collections\HierarchicalCollectionView.as:1664]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.collections::ListCollectionView/dispatchEvent()[C:\Users\mihaichira\workspaceFlex\FlexSDKSource\sdk\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1090]
at mx.collections::ListCollectionView/replaceItemsInView()[C:\Users\mihaichira\workspaceFlex\FlexSDKSource\sdk\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1822]
at mx.collections::ListCollectionView/listChangeHandler()[C:\Users\mihaichira\workspaceFlex\FlexSDKSource\sdk\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:1397]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.collections::ArrayList/setItemAt()[C:\Users\mihaichira\workspaceFlex\FlexSDKSource\sdk\frameworks\projects\framework\src\mx\collections\ArrayList.as:371]
at mx.collections::ListCollectionView/setItemAt()[C:\Users\mihaichira\workspaceFlex\FlexSDKSource\sdk\frameworks\projects\framework\src\mx\collections\ListCollectionView.as:558]
at HierarchicalCollectionViewCursor_FLEX_34119_SET_Test/performReplacement()[C:\Users\mihaichira\workspaceFlex\TFC-10693\src\HierarchicalCollectionViewCursor_FLEX_34119_SET_Test.as:90]

* Or whichever data class you use to structure the hierarchical data.

Structure:
Region(1)
Region(2)
Region(2) -> City(0)
Region(2) -> City(1)
Region(2) -> City(1) -> Company(1)
Region(2) -> City(1) -> Company(2)TBR
Region(2) -> City(1) -> Company(2)TBR -> Department(1)
Region(2) -> City(1) -> Company(2)TBR -> Department(2)
Region(2) -> City(1) -> Company(2)TBR -> Department(2) -> Employee(1)
Region(2) -> City(1) -> Company(2)TBR -> Department(2) -> Employee(2)
Region(2) -> City(1) -> Company(2)TBR -> Department(2) -> Employee(3)SEL
Region(2) -> City(1) -> Company(2)TBR -> Department(3)
Region(2) -> City(1) -> Company(2)TBR -> Department(3) -> Employee(1)
Region(2) -> City(1) -> Company(2)TBR -> Department(3) -> Employee(2)
Region(2) -> City(1) -> Company(2)TBR -> Department(3) -> Employee(3)
Region(2) -> City(1) -> Company(2)TBR -> Department(3) -> Employee(4)
Region(2) -> City(1) -> Company(3)
Region(2) -> City(1) -> Company(3) -> Department(1)
Region(2) -> City(1) -> Company(3) -> Department(1) -> Employee(1)
Region(2) -> City(1) -> Company(3) -> Department(2)

Issue Links

• relates to: FLEX-34119 mx.collections.HierarchicalCollectionViewCursor causes CursorError RTE from ListCollectionView when the underlying collections change