Class ReadLockMode (3.28.0)

Version 3.28.0

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ReadLockMode(value)

ReadLockMode is used to set the read lock mode for read-write transactions.

Values: READ_LOCK_MODE_UNSPECIFIED (0): Default value. If the value is not specified, the pessimistic read lock is used. PESSIMISTIC (1): Pessimistic lock mode. Read locks are acquired immediately on read. OPTIMISTIC (2): Optimistic lock mode. Locks for reads within the transaction are not acquired on read. Instead the locks are acquired on a commit to validate that read/queried data has not changed since the transaction started.