Fast Object Database for Java - with JPA/JDO support

About EntityTransaction

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94

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
89

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
89

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
89

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
89

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
89

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
89

begin()

Method javax.persistence.EntityTransaction void begin() Start a resource transaction. Throws: IllegalStateException - if isActive() is true Since: JPA 1.0
64

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
37

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
30

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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