A standardardized pessimistic lock manager.
一个标准化的悲观锁（pessimistic lock）管理器。
Lock the entire table before saving (pessimistic locking).
保存(悲观锁)之前锁定整个表。
Apache openjpa had previously provided the openjpa.LockManager property and the ReadLockMode hint, which can be used to further configure pessimistic lock semantics within openjpa.
Apacheopenjpa以前提供了openjpa . LockManager属性和ReadLockMode hint，可以用于在openjpa内进一步配置悲观锁语义。
Since pessimistic session locks can be removed as described above, the application that obtained the lock should always check to see if it is still in force before updating data.
如上所述，由于可以删除悲观会话锁，因此获得锁的应用程序始终需要在更新数据之前检测锁是否有效。
This is weaker than a pessimistic session lock -- the convention adhered to by the participants is to warn, not to block.
它较悲观会话锁更弱一些，相关方约定发出警告，而不是阻止。
Cit. as a pessimistic offline lock.
中描述为悲观离线锁。
Cit. as a pessimistic offline lock.
中描述为悲观离线锁。
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