About @Transactional

manual

Obtaining a JPA Database Connection

Shows how to use Java/JPA to connect to the ObjectDB Object Database. In JPA a database connection is represented by the EntityManager javax.persistence.EntityManager JPA interface Interface used to interact with the persistence context. See JavaDoc Reference Page... interface. Therefore, ...

 
manual

Storing JPA Entity Objects

Explains how to use JPA to store (persist) entity objects in the database. New entity objects can be stored in the database either explicitly by invoking the persist persist(entity) EntityManager's method Make an instance managed and persistent. See JavaDoc Reference Page... method or ...

 
manual

Database Connection using JPA

Describes the main JPA interfaces: EntityManagerFactory, EntityManager and EntityTransaction. Working with the Java Persistence API (JPA) consists of using the following interfaces: This page covers the following topics: Overview EntityManagerFactory EntityManager EntityTransac ...

 
manual

Updating JPA Entity Objects

Explains how to use JPA to delete (remove) entity objects from the database. Modifying existing entity objects that are stored in the database is based on transparent persistence, which means that changes are detected and handled automatically. This page covers the following topics: Transparent ...

 
forum_thread

Attempt to begin a new transaction when a transaction is active

The code I have a RecordDao stateless java bean :  #1 2013-06-17 15:02 The code I have a RecordDao stateless java bean :  @ Stateless public cl ...

 
api-jdo

javax.jdo.Transaction

The JDO Transaction interface provides for initiation and completion of transactions under user control.(Interface of JDO)

 
issue

objectdb-2.6.9_06: Extended Persistence Context fails: 'Attempt to begin a new transaction when a transaction is active'

objectdb-2.6.9_01 NetBeans8.1+Glassfish4.1.1 Mac OS X Possibly related: How to Use a SF with extended Persistence Context? Test mini web app at: https://www.webel.com.au/downloads/objectdb/GreensoftObjectdbTestWebMini3683.2016-09-29.tgz Bug Version: Priority: Normal Status: Active Replies: 3 Type:  Bug ...

 
tutorial

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.... em ;   // Stores a new guest: @Transactional public void persist ( Guest guest ) ... for methods that are annotated with the  @Transactional annotation, saving the need to wrap every operation that ...

 
tutorial

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.... em ;   // Stores a new guest: @Transactional public void persist ( Guest guest ) ... automatically for methods that are annotated with the @Transactional annotation, saving the need to wrap every operation that ...

 
manual

Database Transaction Replayer

Explains how to use the ObjectDB object database Replayer tool to restore recorded Java/JPA/JDO actions. ObjectDB can record its internal engine operations in special binary recording (journal) files. Recording is enabled by default and can be disabled in the configuration . The ObjectDB Replayer tool can apply recorded database operations on ...