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90
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javax.persistence.EntityTransaction
javax.persistence Interface EntityTransaction Interface used to control transactions on resource-local entity managers. The EntityManager.getTransaction() method returns the EntityTransaction interface. Since: JPA 1.0 Learn how to use EntityTransaction in Chapter 3 of the ObjectDB/JPA manual. void
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85
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setRollbackOnly()
Method javax.persistence.EntityTransaction void setRollbackOnly() Mark the current resource transaction so that the only possible outcome of the transaction is for the transaction to be rolled back. Throws: IllegalStateException - if isActive() is false Since: JPA 1.0
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85
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rollback()
Method javax.persistence.EntityTransaction void rollback() Roll back the current resource transaction. Throws: IllegalStateException - if isActive() is false PersistenceException - if an unexpected error condition is encountered Since: JPA 1.0
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85
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isActive()
Method javax.persistence.EntityTransaction boolean isActive() Indicate whether a resource transaction is in progress. Returns: boolean indicating whether transaction is in progress Throws: PersistenceException - if an unexpected error condition is encountered Since: JPA 1.0
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85
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getRollbackOnly()
Method javax.persistence.EntityTransaction boolean getRollbackOnly() Determine whether the current resource transaction has been marked for rollback. Returns: boolean indicating whether the transaction has been marked for rollback Throws: IllegalStateException - if isActive() is false Since: JPA 1.0
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85
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commit()
Method javax.persistence.EntityTransaction void commit() Commit the current resource transaction, writing any unflushed changes to the database. Throws: IllegalStateException - if isActive() is false RollbackException - if the commit fails Since: JPA 1.0
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85
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begin()
Method javax.persistence.EntityTransaction void begin() Start a resource transaction. Throws: IllegalStateException - if isActive() is true Since: JPA 1.0
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65
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Database Connection using JPA
the content of a database require active transactions. Transactions are managed by an EntityTransaction ... ); EntityTransaction Operations that affect the content of the database (store, update, delete) must be performed within an active transaction. The EntityTransaction interface represents and manages
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38
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Obtaining a JPA Database Connection
content also require an EntityTransaction instance. Obtaining an EntityManagerFactory Obtaining ... construction. Using an EntityTransaction Operations that modify database content, such as store ... (); There is a one to one relationship between an EntityManager instance and its associated EntityTransaction instances
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29
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EntityTransaction.commit() does not release a pessimistic lock
It appears that EntityTransaction.commit() does not release a pessimistic lock -> test code below. I tried it in with the current (2.7.6_01) and older versions (2.6.9, 2.5.7, 2.4.7) with the same result. (side note: EntityTransaction.rollback() releases it correctly) // Account.java package
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