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https://issues.apache.org/jira/browse/FLEX-28946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Cyrill Zadra resolved FLEX-28946.
---------------------------------
Resolution: Fixed
Fix Version/s: Apache Flex 4.10.0
commited patch to develop branch. mustella tests passes with no failure.
Thank you Mark for the contribution.
> MX DataGrid default column sort breaks on NULL complex fields
> -------------------------------------------------------------
>
> Key: FLEX-28946
> URL: https://issues.apache.org/jira/browse/FLEX-28946
> Project: Apache Flex
> Issue Type: Bug
> Components: mx: DataGrid
> Affects Versions: Adobe Flex SDK Previous
> Environment: Affected OS(s): All OS Platforms
> Affected OS(s): All OS Platforms
> Language Found: English
> Reporter: Adobe JIRA
> Assignee: Cyrill Zadra
> Labels: EasyFix
> Fix For: Apache Flex 4.10.0
>
> Attachments: FLEX-28946.patch
>
>
> Steps to reproduce:
> 1.Create an mx:DataGrid with an ArrayCollection dataProvider populated with
> Objects that have nested objects.
> 2.Set one of the properties of a nested object to null
> 3.Try sorting (by clicking on the header field) on a column that displays
> that property (eg. "address.city")
>
> Actual Results:
> TypeError: Error #1009: Cannot access a property or method of a null object
> reference.
> thrown in DataGridColumn.complexColumnSortCompare
> the code does not check if resulting value is null
> Note: DataGridColumn.deriveComplexColumnData function also does not check if
> any component of complex property path is null
>
> Expected Results:
> Grid sorted on that column, nulls handled corretly (first in ascending order)
>
> Workaround (if any):
> Creating a custom compare function
> Example MXML:
> <?xml version="1.0" encoding="utf-8"?>
> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009";
> xmlns:s="library://ns.adobe.com/flex/spark"
> xmlns:mx="library://ns.adobe.com/flex/mx"
> minWidth="955" minHeight="600">
> <fx:Script>
> <![CDATA[
> [Bindable]
> public var data: Array = [
> {name: "Item1", address: {city: "City1"}},
> {name: "Item2", address: {city: null}},
> ];
> ]]
> >
> </fx:Script>
> <fx:Declarations>
> </fx:Declarations>
>
> <mx:DataGrid dataProvider="{data}">
> <mx:columns>
> <mx:DataGridColumn headerText="Name" dataField="name" />
> <mx:DataGridColumn headerText="City"
> dataField="address.city" />
> </mx:columns>
> </mx:DataGrid>
> </s:Application>
>
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