Can a Java DB be used as a JTA data source?
Can a Java DB be used as a JTA data source?
If the transaction-type element is omitted or specified as JTA and both the jta-data-source and non-jta-data-source elements are omitted in the persistence.xml file, Java DB is used as a JTA data source.
Is there way to specify JTA DataSource in hibernate?
No, if you’re using JTA, you can use the jta-data-source to specify the JNDI name for the associated JTA DataSource, while for RESOURCE_LOCAL, you need to use the non-jta-data-source. If you’re using Hibernate, you can also use the hibernate.connection.datasource configuration property to specify the JDBC DataSource to be used.
When to use JTA or resource _ local transactions?
For instance, by default, Spring applications use RESOURCE_LOCAL transactions, and to use JTA, you need to explicitly choose the JtaTransactionManager Spring bean. The description element allows you to provide more details about the goals of the current Persistence Unit.
Can you use sequence identifier generator in MySQL?
For instance, you can use the SEQUENCE identifier generator by default using the @SequenceGenerator annotation and substitute that with IDENTITY for MySQL, which does not support database sequences. For more details about this topic, check out this article .
What to put into JTA data source of persistence.xml?
Here’s a snippet from the testcase-injection example which shows how you can get an EntityManager and other things from the container for use in a test. Then, annotate your test case with @org.apache.openejb.api.LocalClient and use the standard JavaEE annotations for the actual injection.
Why is EntityManager null in Java stack overflow?
@Stateless public class UserFacade extends AbstractFacade { @PersistenceContext (unitName = “CollDocPU”) private EntityManager em; @Override protected EntityManager getEntityManager () { return em; } } but when i get it by above way I get null.