About Transactional

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Manual
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Database Transaction Replayer

contains two types of files: Backup files - with names of the form <transaction-id>.odb Recording files - with names of the form <transaction-id>.odr A backup file is an ordinary ObjectDB database file that reflects the state of the database at the end of a specific transaction. The ID
JDO Doc
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javax.jdo.Transaction

javax.jdo Interface Transaction The JDO Transaction interface provides for initiation and completion of transactions under user control. It is a sub-interface of the PersistenceManager that deals with options and transaction demarcation. Transaction options include whether optimistic concurrency
JDO Doc
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begin()

Method javax.jdo.Transaction void begin() Begin a transaction. The type of transaction is determined by the setting of the Optimistic flag. Throws: JDOUserException - if transactions are managed by a container in the managed environment, or if the transaction is already active. Since: JDO 1.0 See Also: setOptimistic getOptimistic
JDO Doc
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setIsolationLevel(level)

Method javax.jdo.Transaction void setIsolationLevel(   String level ) Set the value for transaction isolation level for this transaction. Transaction isolation levels are defined in javax.jdo ... - the transaction isolation level Since: JDO 2.2 See Also: getIsolationLevel() Constants.TX_READ
JDO Doc
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commit()

Method javax.jdo.Transaction void commit() Commit the current transaction. Throws: JDOUserException - if transactions are managed by a container in the managed environment, or if the transaction is not active. Since: JDO 1.0
JDO Doc
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getIsolationLevel()

Method javax.jdo.Transaction String getIsolationLevel() Get the value for transaction isolation level for this transaction. Returns: the transaction isolation level Since: JDO 2.2 See Also: setIsolationLevel(String)
JDO Doc
44

rollback()

Method javax.jdo.Transaction void rollback() Roll back the current transaction. Throws: JDOUserException - if transactions are managed by a container in the managed environment, or if the transaction is not active. Since: JDO 1.0
JDO Doc
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setRollbackOnly()

Method javax.jdo.Transaction void setRollbackOnly() Sets the rollback-only status of the transaction to true. After this flag is set to true, the transaction can no longer be committed, and any attempt to commit the transaction will throw JDOFatalDataStoreException. Since: JDO 2.0
JDO Doc
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setSynchronization(sync)

Method javax.jdo.Transaction void setSynchronization(   Synchronization sync ) The user can specify a Synchronization instance to be notified on transaction completions. The beforeCompletion method ... after performing state transitions of persistent and transactional instances, following the data store
JDO Doc
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getPersistenceManager()

Method javax.jdo.Transaction PersistenceManager getPersistenceManager() The Transaction instance is always associated with exactly one PersistenceManager. Returns: the PersistenceManager for this Transaction instance Since: JDO 1.0