Default value for transaction-type in persistence.xml

[longbeach]

Hi,

it seems to me that there is a lot of confusion in the default value of the transaction-type attribute of the persistence-unit tag in the persistence.xml file.

What is the default value of this file ? JTA or RESOURCE_LOCAL ?
Does it depend on the environment : Java SE or JAVA EE ?

That is what this documentation for Apache Geronimo states :
http://cwiki.apache.org/GMOxDOC21/persistencexml.html

In general, in Java EE environments, a transaction-type of RESOURCE_LOCAL assumes that a non-JTA datasource will be provided. In a Java EE environment, if this element is not specified, the default is JTA. In a Java SE environment, if this element is not specified, a default of RESOURCE_LOCAL may be assumed.

What is the behaviour of that attribute in JBoss 5.1.0 GA ?

Thanks for enlightening me and other people i am sure.

Celinio Fernandes

[jaikiran]

"longbeach" wrote:

That is what this documentation for Apache Geronimo states :
http://cwiki.apache.org/GMOxDOC21/persistencexml.html

In general, in Java EE environments, a transaction-type of RESOURCE_LOCAL assumes that a non-JTA datasource will be provided. In a Java EE environment, if this element is not specified, the default is JTA. In a Java SE environment, if this element is not specified, a default of RESOURCE_LOCAL may be assumed.

That's actually what the EJB3 Persistence Spec states too:

"EJB3 Persistence Spec" wrote:
6.2.1.2 transaction-type
The transaction-type attribute is used to specify whether the entity managers provided by the entity manager factory for the persistence unit must be JTA entity managers or resource-local entity managers. The value of this element is JTA or RESOURCE_LOCAL. A transaction-type of JTA assumes that a JTA data source will be provided either as specified by the jta-data-source element or provided by the container. In general, in Java EE environments, a transaction-type of RESOURCE_LOCAL assumes that a non-JTA datasource will be provided. In a Java EE environment, if this element is not specified, the default is JTA. In a Java SE environment, if this element is not specified, a default of RESOURCE_LOCAL may be assumed.

[longbeach]

Thanks Jaikiran. That is what I read too a while ago. I guess I needed confirmation of that same behaviour in JBoss, which should be anyways, since it is JEE compliant.