JBoss Application Server 4.3 Seam Reference Guide

23.10. Special components

Certain special Seam component classes are installable multiple times under names specified in the Seam configuration. For example, the following lines in components.xml install and configure two Seam components:

<component name="bookingDatabase"
          class="org.jboss.seam.core.ManagedPersistenceContext">
    <property name="persistenceUnitJndiName">java:/comp/emf/bookingPersistence</property>
</component>

<component name="userDatabase"
          class="org.jboss.seam.core.ManagedPersistenceContext">
    <property name="persistenceUnitJndiName">java:/comp/emf/userPersistence</property>
</component>

The Seam component names are bookingDatabase and userDatabase.

<entityManager> , org.jboss.seam.core.ManagedPersistenceContext

Manager component for a conversation scoped managed EntityManager with an extended persistence context.

<entityManager> .entityManagerFactory — a value binding expression that evaluates to an instance of EntityManagerFactory.

<entityManager> .persistenceUnitJndiName — the JNDI name of the entity manager factory, default to java:/ <managedPersistenceContext> .

<entityManagerFactory> , org.jboss.seam.core.EntityManagerFactory

Manages a JPA EntityManagerFactory. This is most useful when using JPA outside of an EJB 3.0 supporting environment.

entityManagerFactory.persistenceUnitName — the name of the persistence unit.

See the API JavaDoc for further configuration properties.

<session> , org.jboss.seam.core.ManagedSession

Manager component for a conversation scoped managed Hibernate Session.

<session> .sessionFactory — a value binding expression that evaluates to an instance of SessionFactory.

<session> .sessionFactoryJndiName — the JNDI name of the session factory, default to java:/ <managedSession> .

<sessionFactory> , org.jboss.seam.core.HibernateSessionFactory

Manages a Hibernate SessionFactory.

<sessionFactory>.cfgResourceName — the path to the configuration file. Default to hibernate.cfg.xml.

See the API JavaDoc for further configuration properties.

<managedQueueSender> , org.jboss.seam.jms.ManagedQueueSender

Manager component for an event scoped managed JMS QueueSender.

<managedQueueSender> .queueJndiName — the JNDI name of the JMS queue.

<managedTopicPublisher> , org.jboss.seam.jms.ManagedTopicPublisher

Manager component for an event scoped managed JMS TopicPublisher.

<managedTopicPublisher> .topicJndiName — the JNDI name of the JMS topic.

<managedWorkingMemory> , org.jboss.seam.drools.ManagedWorkingMemory

Manager component for a conversation scoped managed Drools WorkingMemory.

<managedWorkingMemory> .ruleBase — a value expression that evaluates to an instance of RuleBase.

<ruleBase> , org.jboss.seam.drools.RuleBase

Manager component for an application scoped Drools RuleBase. Note that this is not really intended for production usage, since it does not support dynamic installation of new rules.

<ruleBase> .ruleFiles — a list of files containing Drools rules.

<ruleBase> .dslFile — a Drools DSL definition.