About transaction
Obtaining a JPA Database Connection
Shows how to use Java/JPA to connect to the ObjectDB Object Database.... and delete should only be performed within an active transaction. Given an EntityManager ... Reference Page... , em, it is very easy to begin a transaction: em. getTransaction getTransaction() ... EntityTransaction's method Start a resource transaction. See JavaDoc Reference Page... ( ) ; ...
Storing JPA Entity Objects
Explains how to use JPA to store (persist) entity objects in the database.... EntityTransaction's method Start a resource transaction. See JavaDoc Reference Page... ( ) ; ... method Commit the current resource transaction, writing any unflushed changes to the database. See JavaDoc ... The new entity object is stored in the database when the transaction is committed. An IllegalArgumentException is thrown by ...
Database Connection using JPA
Describes the main JPA interfaces: EntityManagerFactory, EntityManager and EntityTransaction.... (store, update, delete) must be performed within an active transaction. The EntityTransaction ... EntityTransaction's method Start a resource transaction. See JavaDoc Reference Page... ( ) ; ... method Commit the current resource transaction, writing any unflushed changes to the database. See JavaDoc ...
Updating JPA Entity Objects
Explains how to use JPA to delete (remove) entity objects from the database.... it can simply be modified in memory from inside an active transaction: Employee employee = em. find find(entityClass, ... EntityTransaction's method Start a resource transaction. See JavaDoc Reference Page... ( ) ; ...
javax.jdo.Transaction
The JDO Transaction interface provides for initiation and completion of transactions under user control.(Interface of JDO)
Step 3: Define a Spring DAO Component
Explains how to define a JPA DAO component (bean) in a NetBeans Spring MVC JPA web application project.... . Component ; import org. springframework . transaction . annotation . Transactional ; @Component public ... that modifies the database (such as persist ) by transaction begin and commit . The next step is adding a ...
Step 3: Define a Spring DAO Component
Explains how to define a JPA DAO component (bean) in an Eclipse Spring MVC JPA web application project.... . Component ; import org. springframework . transaction . annotation . Transactional ; @Component public ... that modifies the database (such as persist ) by transaction begin and commit . The next step is ...
Failed to commit transaction: Attempt to commit a rollback only transaction
Anyone know what this means?? Suddenly cropped up. Failed to commit transaction: Attempt to commit a rollback only transaction (error 613) at com.objectdb.jpa.EMImpl.commit(EMImpl.java:271) at javax.jdo.Transaction$commit.call(Unknown Source) ... Suddenly cropped up. Failed to commit transaction: Attempt to commit a rollback only transaction (error 613) at com.objectdb.jpa.EMImpl.commit(EMImpl.java:271) at ...
JDO Reference (JavaDoc)
Java/JDO API Reference (based on the JDO 2.2 JavaDoc)... javax.jdo.PersistenceManager javax.jdo.Transaction javax.jdo.Query javax.jdo.Extent All ...
Database Transaction Replayer
Explains how to use the ObjectDB object database Replayer tool to restore recorded Java/JPA/JDO actions.... 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 ...
