[CAUSEWAY-1461] More reliable fix to concurrency exception

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.12.2
• Fix Version/s: 1.13.0
• Component/s: Viewer Wicket
• Assignee: Daniel Keir Haywood
• Reporter: Daniel Keir Haywood
• Created: 26/Jun/16 15:10
• Updated: 11/Jul/16 19:36
• Resolved: 26/Jun/16 15:36

Description

The concurrency exception addressed in 1.12.x has reappeared.

To reproduce:

• https://github.com/danhaywood/ddd-london-20160601
• dev_summer branch
• create Presenter
• click 'Create' (the contributed action to propose a session)
• in the resultant Session, click on the "Other" tab (where the Presenter reference lives)
• bam, concurrency exception.

Suggest the fix instead is to postpone the EntityPage#buildGui into the onRender, so that reload all objects on the redirect. Have considered this in the past but had been able to make it work without resorting to this.