Este contenido no está disponible en el idioma seleccionado.

9.3. Demarcation by UserTransaction


Overview

It is possible to demarcate a transaction by accessing the UserTransaction service directly and calling its begin(), commit() and rollback() methods. But you should be careful to call these methods only when it is really necessary. Usually, in a Apache Camel application, a transaction would be started either by a transactional endpoint or by the transacted() marker in a route, so that explicit invocations of UserTransaction methods are not required.

Accessing UserTransaction from Apache Camel

In the case of Apache Camel applications deployed in an OSGi container, you can easily obtain a reference to the UserTransaction OSGi service by looking it up in the CamelContext registry. For example, given the CamelContext instance, camelContext, you could obtain a UserTransaction reference as follows:
// Java
import javax.transaction.UserTransaction;
...
UserTransaction ut =
    (UserTransaction) camelContext.getRegistry().lookup(UserTransaction.class.getName());
Copy to Clipboard Toggle word wrap
For more details of how the registry is integrated with OSGi, see Integration with Apache Camel.

Example with UserTransaction

The following example shows how to access a UserTransaction object and use it to demarcate a transaction, where it is assumed that this code is part of a Apache Camel application deployed inside an OSGi container.
// Java
import javax.transaction.UserTransaction;
...
UserTransaction ut =
    (UserTransaction) camelContext.getRegistry().lookup(UserTransaction.class.getName());

try {
  ut.begin();
  ...
  // invoke transactional methods or endpoints
  ...
  ut.commit();
}
catch (Exception e) {
  ut.rollback();
}
Copy to Clipboard Toggle word wrap
Volver arriba
Red Hat logoGithubredditYoutubeTwitter

Aprender

Pruebe, compre y venda

Comunidades

Acerca de la documentación de Red Hat

Ayudamos a los usuarios de Red Hat a innovar y alcanzar sus objetivos con nuestros productos y servicios con contenido en el que pueden confiar. Explore nuestras recientes actualizaciones.

Hacer que el código abierto sea más inclusivo

Red Hat se compromete a reemplazar el lenguaje problemático en nuestro código, documentación y propiedades web. Para más detalles, consulte el Blog de Red Hat.

Acerca de Red Hat

Ofrecemos soluciones reforzadas que facilitan a las empresas trabajar en plataformas y entornos, desde el centro de datos central hasta el perímetro de la red.

Theme

© 2025 Red Hat