EJB方法总结

EJBHome

getEJBHome()得到bean的Home.

 Handle

getHandle()保存EjbObject的一个引用   

 Object

getPrimaryKey() 得到实体bean的主键  

 boolean

isIdentical(EJBObject obj) 比较两个EJBObject是否引用同一个

 void

remove() 对会话bean说释放这个bean为客户保留的资源

对实体bean来说 删除一行记录
        

EJBHome

getEJBHome()
          Obtain the remote home interface of the enterprise Bean.

 Class

getHomeInterfaceClass()
          Obtain the Class object for the enterprise Bean's remote home interface.

 Class

getPrimaryKeyClass()
          Obtain the Class object for the enterprise Bean's primary key class.

 Class

getRemoteInterfaceClass()
          Obtain the Class object for the enterprise Bean's remote interface.

 boolean

isSession()
          Test if the enterprise Bean's type is "session".

 boolean

isStatelessSession()
          Test if the enterprise Bean's type is "stateless session".

javax.ejb
Interface EJBHome

 EJBMetaData

getEJBMetaData() 从Bean得到反射子类的信息
          Obtain the EJBMetaData interface for the enterprise Bean.

 HomeHandle

getHomeHandle() 对home串行化，可以通过这个方法再次得到和使用这个home,无需通过JNDI
          Obtain a handle for the remote home object.

 void

remove(Handle handle) 删除会话bean
          Remove an EJB object identified by its handle.

 void

remove(Object primaryKey)删除实体Bean
          Remove an EJB object identified by its primary key.

 Identity

getCallerIdentity()
          Deprecated. Use Principal getCallerPrincipal() instead.

 Principal

getCallerPrincipal()
          Obtain the java.security.Principal that identifies the caller.

 EJBHome

getEJBHome()
          Obtain the enterprise bean's remote home interface.

 EJBLocalHome

getEJBLocalHome()
          Obtain the enterprise bean's local home interface.

 Properties

getEnvironment()
          Deprecated. Use the JNDI naming context java:comp/env to access enterprise bean's environment.

 boolean

getRollbackOnly()
          Test if the transaction has been marked for rollback only.

 TimerService

getTimerService()
          Get access to the EJB Timer Service.

 UserTransaction

getUserTransaction()
          Obtain the transaction demarcation interface.

 boolean

isCallerInRole(Identity role)
          Deprecated. Use boolean isCallerInRole(String roleName) instead.

 boolean

isCallerInRole(String roleName)
          Test if the caller has a given security role.

 void

setRollbackOnly()
          Mark the current transaction for rollback.

EJBLocalObject

getEJBLocalObject()
          Obtain a reference to the EJB local object that is associated with the instance.

 EJBObject

getEJBObject()
          Obtain a reference to the EJB object that is currently associated with the instance.

 MessageContext

getMessageContext()
          Obtain a reference to the JAX-RPC MessageContext.

void

ejbActivate()
          The activate method is called when the instance is activated from its "passive" state.

 void

ejbPassivate()
          The passivate method is called before the instance enters the "passive" state.

 void

ejbRemove()
          A container invokes this method before it ends the life of the session object.

 void

setSessionContext(SessionContext ctx)
          Set the associated session context

void

ejbActivate()
          从池中取出bean，为客户的业务方法调用提供服务时调用这

    个方法

 void

ejbLoad()
    bean已经用底层持久存储库的数据刷新时调用这个方法

 void

ejbPassivate()
      bean在事务结束之后要返回到池中时会调用这个方法.

 void

ejbRemove()
       客户调用remove().想从数据库中删除这个实体时调用这个方法

 void

ejbStore()
       当容器要更新数据库来反映bean状态时调用这个方法.

 void

setEntityContext(EntityContext ctx)
          Set the associated entity context.

 void

unsetEntityContext()
         容器想缩小池的大小时调用这个方法