Developing session beans

Subtopics

• Configure EJB 3.1 session bean methods to be asynchronous
  Use this task to configure EJB 3.1 session bean methods to run asynchronously. We can make some or all of the bean methods asynchronous.

• Develop stateful session beans
  We can create a bean implementation class for a stateful session bean as introduced in the Enterprise JavaBeans™ (EJB) 1.0 specification and significantly simplified by the EJB 3.0 specification. A stateful bean is a type of session bean intended for use by a single client during its lifetime and maintains a conversational state with the client that is calling it.

• Develop a session bean to have a No-Interface Local view
  We can specify that a session bean have a No-Interface view.

• Develop singleton session beans
  Create a bean implementation class for a singleton session bean, introduced by the EJB 3.1 specification. The EJB container initializes only one instance of a singleton session bean, and that instance is shared by all clients. Because a single instance is shared by all clients, singleton session beans have special life cycle and concurrency semantics.