[/url] [url=file:///F:/资料/文字资料/j2ee-1.4_doc/apidocs/overview-summary.html]Overview
Class
JavaTM 2 Platform
Ent. Ed. v1.4
SUMMARY: NESTED | FIELD | CONSTR | METHOD
DETAIL: FIELD | CONSTR | METHOD
javax.ejb
Interface EntityContextAll Superinterfaces: EJBContext public interface EntityContext extends EJBContextThe EntityContext interface provides an instance with access to the container-provided runtime context of an entity enterprise Bean instance. The container passes the EntityContext interface to an entity enterprise Bean instance after the instance has been created. EntityContext接口提供了一个实例来访问容器提供的实体Bean实例的运行时上下文。容器在实例创建后将EntityContext接口传递给实体Bean实例。
The EntityContext interface remains associated with the instance for the lifetime of the instance. Note that the information that the instance obtains using the EntityContext interface (such as the result of the getPrimaryKey() method) may change, as the container assigns the instance to different EJB objects during the instance's life cycle. EntityContext接口在实例的生命周期内保留与实例的关联。注意实例使用EntityContext 接口（比如作为getPrimaryKey()方法的结果）获得的信息可能会有变化，因为容器在实例的 生命周期内会分配给实例以不同的EJB对象。
Method Summary
Obtain a reference to the EJB local object that is currently associated with the instance. 获得当前与该实例关联的EJB本地对象的引用。
Obtain a reference to the EJB object that is currently associated with the instance. 获得当前与该实例关联的EJB对象的引用。
Obtain the primary key of the EJB object that is currently associated with this instance. 获得当前与该实例关联的EJB本地对象的主键。
Methods inherited from interface javax.ejb.EJBContext
getCallerIdentity, getCallerPrincipal, getEJBHome, getEJBLocalHome, getEnvironment, getRollbackOnly, getTimerService, getUserTransaction, isCallerInRole, isCallerInRole, setRollbackOnly
Method Detail
getEJBLocalObjectpublic EJBLocalObject getEJBLocalObject()
throws IllegalStateException
Obtain a reference to the EJB local object that is currently associated with the instance. 获得当前与该实例关联的EJB本地对象的引用。 An instance of an entity enterprise Bean can call this method only when the instance is associated with an EJB local object identity, i.e. in the ejbActivate, ejbPassivate, ejbPostCreate, ejbRemove, ejbLoad, ejbStore, and business methods. 只有当实体Bean的实例和一个EJB本地对象标识关联，它才可以调用该方法，也就是 ejbActivate、ejbPassivate、ejbPostCreate、ejbRemove、ejbLoad、ejbStore和业务方法。
An instance can use this method, for example, when it wants to pass a reference to itself in a method argument or result. 实例可以使用该方法，比如，以方法参数或结果形式传递自身引用。
Returns: The EJB local object currently associated with the instance. 当前与实例关联的EJB本地对象。 Throws: IllegalStateException - if the instance invokes this method while the instance is in a state that does not allow the instance to invoke this method, or if the instance does not have a local interface. 如果实例调用改方法而实例所在的状态不允许其调用该方法或者实例没有本地接口时抛出。getEJBObjectpublic EJBObject getEJBObject()
throws IllegalStateException
Obtain a reference to the EJB object that is currently associated with the instance. 获得当前与该实例关联的EJB对象的引用。 An instance of an entity enterprise Bean can call this method only when the instance is associated with an EJB object identity, i.e. in the ejbActivate, ejbPassivate, ejbPostCreate, ejbRemove, ejbLoad, ejbStore, and business methods. 只有当实体Bean的实例和一个EJB对象标识关联，它才可以调用该方法，也就是 ejbActivate、ejbPassivate、ejbPostCreate、ejbRemove、ejbLoad、ejbStore和业务方法。
An instance can use this method, for example, when it wants to pass a reference to itself in a method argument or result. 实例可以使用该方法，比如，以方法参数或结果形式传递自身引用。
Returns: The EJB object currently associated with the instance. 当前与实例关联的EJB对象。 Throws: IllegalStateException - Thrown if the instance invokes this method while the instance is in a state that does not allow the instance to invoke this method, or if the instance does not have a remote interface. 如果实例调用改方法而实例所在的状态不允许其调用该方法或者实例没有远程接口时抛出。getPrimaryKeypublic Object getPrimaryKey()
throws IllegalStateException
Obtain the primary key of the EJB object that is currently associated with this instance. 获得当前与该实例关联的EJB本地对象的主键。 An instance of an entity enterprise Bean can call this method only when the instance is associated with an EJB object identity, i.e. in the ejbActivate, ejbPassivate, ejbPostCreate, ejbRemove, ejbLoad, ejbStore, and business methods. 只有当实体Bean的实例和一个EJB对象标识关联，它才可以调用该方法，也就是 ejbActivate、ejbPassivate、ejbPostCreate、ejbRemove、ejbLoad、ejbStore和业务方法。
Note: The result of this method is that same as the result of getEJBObject().getPrimaryKey(). 注意：该方法的结果和getEJBObject().getPrimaryKey()的结果相同。
Returns: The primary key currently associated with the instance. 当前与实例关联的主键。 Throws: IllegalStateException - Thrown if the instance invokes this method while the instance is in a state that does not allow the instance to invoke this method. 如果实例调用改方法而实例所在的状态不允许其 调用该方法时抛出。[/url][url=file:///F:/资料/文字资料/j2ee-1.4_doc/apidocs/overview-summary.html]Overview
Class
JavaTM 2 Platform
Ent. Ed. v1.4
SUMMARY: NESTED | FIELD | CONSTR | METHOD
DETAIL: FIELD | CONSTR | METHOD
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