After add jboss ejb property from XDoclet setting. We can run Xdoclet with MyEclipse then cmp-field will be auto create by XDoclet. But, in jboss 5.0.0.CR1 version, cmp must match (field-name, read-only? read-time-out?, conlum-name?, not-null?, ((jdbc-type, sql-type)|(property+))?)
An Entity Bean is an Enterprise JavaBean (EJB) that represents a persistent object in a relational database. JBoss provides two methods of entity bean persistence, Bean Managed Persistence (BMP) and Container-Managed Persistence (CMP). With BMP, the entity bean developer must implement all the persistence logic. With CMP, the application server manages entity bean persistence; the developer provides interfaces and configuration.
Entity JavaBeans that use container-managed persistence (CMP) are convenient, because they require so little custom code to achieve automatic persistence. But that convenience carries a price: beans using CMP are also ferociously complex to configure, and often difficult to debug.
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