[OPENJPA-1402] Improve (avoid) lock on relation field per 2.0 spec semantics

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0-M3
• Fix Version/s: 2.0.0-beta
• Component/s: jpa
• Assignee: Albert Lee
• Reporter: Albert Lee
• Created: 27/Nov/09 05:08
• Updated: 24/Feb/10 14:35
• Resolved: 01/Dec/09 15:45

Description

Current pessimistic lock manager locks relation fields by default.

JPA 2.0 spec does not require relation field to be locked for better concurrency. This JIRA is used to implement the 2.0 locking semantics only if mixed lock manager is deployed.