Implement LockMode.UpgradeSkipLocked

[beppler]

Hibernate has an additional lock mode called UPGRADE_SKIPLOCKED described as:

The lock acquisition request skips the already locked rows. It uses a SELECT …​ FOR UPDATE SKIP LOCKED in Oracle and PostgreSQL 9.5, or SELECT …​ with (rowlock, updlock, readpast) in SQL Server.

This kind of lock is very usefull quen there are many consumers for a table that is used as a queue.

Documentation for Hibernate version 5

Documentation for Hibernate version 4

[beppler]

First implemented on Hibernate here