[FLEX-33157] Sort class: _fields and fieldList variables can be out of sync

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Adobe Flex SDK 4.5 (Release)
• Fix Version/s: Apache Flex 4.11.0
• Component/s: Spark: Sort and SortField
• Assignee: Justin Mclean
• Reporter: Robert Bar
• Created: 03/Aug/12 12:54
• Updated: 25/Sep/13 08:05
• Resolved: 25/Sep/13 08:05

Description

NOTE: the issue exists in both, mx and spark Sort classes.

Sort.findItem function is not able to configure search criteria and skips a block of code due to outdated fieldList variable. It often happens when the user sorts the AdvancedDataGrid by clicking on a certain column header. In the shortest scenario you can reproduce it (without AdvancedDataGrid) as follows:
1. create Sort object and assign an empty array of SortField objects to it
-> _fields and fieldList are both empty
2. add SortField object directly to the array
-> _fields length is 1, BUT fieldList length is 0 (BUG) which disallows findItem() operation to configure search criteria