Basic HTML version of Foils prepared July 6 99

Foil 117 Component Types - I

From Object Web Computing Technologies CPS714 Computational Science Information Track -- June 16 99. by H. Timucin Ozdemir


1 Component types are service, session, process and entity.
2 Service components : the lifetime of the service component is limited to the lifetime of the method invocation therefore it has no state and identity.
3 Session component : the life span of the session component described in the servant-lifetime description. These components has transient state living through the lifetime of the client interaction and non-persistent identity. This matches with SessionBean in EJB. Stateless Session Beans is a Session component with method servant lifetime policy and Stateful Session Beans is a Session component with transaction or container servant lifetime policy.

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