[CAUSEWAY-3110] Defer audit trail publishing until end of transaction

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0-M7
• Fix Version/s: 2.0.0-M8
• Assignee: Daniel Keir Haywood
• Reporter: Daniel Keir Haywood
• Created: 03/Aug/22 12:13
• Updated: 26/Aug/22 04:36
• Resolved: 20/Aug/22 09:41

Description

The current "light-weight" implementation (introduced in ISIS-2826) would seem to be a little too eager : when combined with the commandlog implementation - that flushes later on - i believe we are corrupting the internal UoW caches within EntityManager... it thinks that the id of AuditEntry's already persisted are being updated.

The situation and error found is similar to https://bugs.eclipse.org/bugs/show_bug.cgi?id=333977.

So instead, defer the actual publishing until the end, the same way that JDO works.  But still leverage the property change records that JPA provides.