 99 | supported pessimistic lock modes are: PESSIMISTIC_READ - which represents a shared lock. PESSIMISTIC_WRITE ... cannot be granted: A PESSIMISTIC_READ lock request fails if another user (which is represented by ... a PESSIMISTIC_READ lock on that database object. For example, consider the following code fragment:
em1 |
56 | Static Field javax.jdo.spi.PersistenceCapable byte CHECK_READ If jdoFieldFlags for a field includes CHECK_READ, then the field has been enhanced to call the jdoStateManager on read if the jdoFlags setting is not READ_OK or READ_WRITE_OK. Since: JDO 1.0 |
55 | Static Field javax.jdo.spi.PersistenceCapable byte MEDIATE_READ If jdoFieldFlags for a field includes MEDIATE_READ, then the field has been enhanced to always call the jdoStateManager on all reads. Since: JDO 1.0 |
55 | Static Field javax.jdo.spi.PersistenceCapable byte READ_OK If jdoFlags is set to READ_OK, then the fields in the default fetch group can be accessed for read without notifying the StateManager. Since: JDO 1.0 |
55 | Static Field javax.jdo.spi.PersistenceCapable byte READ_WRITE_OK If jdoFlags is set to READ_WRITE_OK, then the fields in the default fetch group can be accessed for read or write without notifying the StateManager. Since: JDO 1.0 |
54 | Static Field javax.jdo.Constants String PMF_ATTRIBUTE_NONTRANSACTIONAL_READ The name of the persistence manager factory element's "nontransactional-read" attribute. Since: JDO 2.1 |
54 | Static Field javax.jdo.Constants String PROPERTY_TRANSACTION_ISOLATION_LEVEL_READ_COMMITTED "javax.jdo.option.TransactionIsolationLevel.read-committed" Since: JDO 2.2 See Also: PersistenceManagerFactory.supportedOptions() |
54 | Static Field javax.jdo.Constants String PROPERTY_TRANSACTION_ISOLATION_LEVEL_READ_UNCOMMITTED "javax.jdo.option.TransactionIsolationLevel.read-uncommitted" Since: JDO 2.2 See Also: PersistenceManagerFactory.supportedOptions() |
54 | Static Field javax.jdo.Constants String PROPERTY_TRANSACTION_ISOLATION_LEVEL_REPEATABLE_READ "javax.jdo.option.TransactionIsolationLevel.repeatable-read" Since: JDO 2.2 See Also: PersistenceManagerFactory.supportedOptions() |
54 | Static Field javax.jdo.Constants String TX_READ_COMMITTED Transaction isolation level representing the requirement to read committed data only. Since: JDO 2.2 See Also: PersistenceManagerFactory.getTransactionIsolationLevel() Transaction.getIsolationLevel() |
