5.2.4. JavaBeans
JavaBeans are used similarly to stateless or stateful session beans. However, they do not provide functions such as declarative transaction demarcation, declarative security, efficient clustered state replication, EJB3 persistence, timeout methods, etc.
In a later chapter, we show you how to use Seam and Hibernate without an EJB container. In this case, components are JavaBeans rather than session beans.
Note
In a clustered environment, it is less efficient to cluster conversation- or session-scoped Seam JavaBean components than it is to cluster stateful session bean components.
By default, JavaBeans are bound to the event context.
Seam always serializes concurrent requests to session-scoped JavaBeans.
Seam JavaBean components are instantiated with
Component.getInstance() or @In(create=true). They should not be directly instantiated using the new operator.
