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package javax.ejb;
import java.rmi.RemoteException;
/**
* The EntityBean interface is implemented by every entity bean
* class. The container uses the EntityBean methods to notify the entity
* bean instances of the instance's life cycle events.
*
* <p>
* Applications written to the EJB 3.0 and later APIs should use the facilities
* of the Java Persistence API (<code>javax.persistence</code>) to model
* persistent entities.
*
* @since EJB 1.0
*/
public interface EntityBean extends EnterpriseBean {
/**
* Set the associated entity context. The container invokes this method
* on an instance after the instance has been created.
*
* <p> This method is called in an unspecified transaction context.
*
* @param ctx An EntityContext interface for the instance. The instance
* should store the reference to the context in an instance variable.
*
* @exception EJBException Thrown by the method to indicate a failure
* caused by a system-level error.
*
* @exception RemoteException This exception is defined in the method
* signature to provide backward compatibility for enterprise beans
* written for the EJB 1.0 specification. Enterprise beans written
* for the EJB 1.1 specification should throw the
* javax.ejb.EJBException instead of this exception.
* Enterprise beans written for the EJB2.0 and higher specifications
* must throw the javax.ejb.EJBException instead of this exception.
*/
public void setEntityContext(EntityContext ctx) throws EJBException,
RemoteException;
/**
* Unset the associated entity context. The container calls this method
* before removing the instance.
*
* <p> This is the last method that the container invokes on the instance.
* The Java garbage collector will eventually invoke the finalize() method
* on the instance.
*
* <p> This method is called in an unspecified transaction context.
*
* @exception EJBException Thrown by the method to indicate a failure
* caused by a system-level error.
*
* @exception RemoteException This exception is defined in the method
* signature to provide backward compatibility for enterprise beans
* written for the EJB 1.0 specification. Enterprise beans written
* for the EJB 1.1 specification should throw the
* javax.ejb.EJBException instead of this exception.
* Enterprise beans written for the EJB2.0 and higher specifications
* must throw the javax.ejb.EJBException instead of this exception.
*/
public void unsetEntityContext() throws EJBException, RemoteException;
/**
* A container invokes this method before it removes the EJB object
* that is currently associated with the instance. This method
* is invoked when a client invokes a remove operation on the
* entity bean's home interface or the EJB object's remote interface.
* This method transitions the instance from the ready state to the pool
* of available instances.
*
* <p> This method is called in the transaction context of the remove
* operation.
*
* @exception RemoveException The enterprise Bean does not allow
* destruction of the object.
*
* @exception EJBException Thrown by the method to indicate a failure
* caused by a system-level error.
*
* @exception RemoteException This exception is defined in the method
* signature to provide backward compatibility for enterprise beans
* written for the EJB 1.0 specification. Enterprise beans written
* for the EJB 1.1 specification should throw the
* javax.ejb.EJBException instead of this exception.
* Enterprise beans written for the EJB2.0 and higher specifications
* must throw the javax.ejb.EJBException instead of this exception.
*/
public void ejbRemove() throws RemoveException, EJBException,
RemoteException;
/**
* A container invokes this method when the instance
* is taken out of the pool of available instances to become associated
* with a specific EJB object. This method transitions the instance to
* the ready state.
*
* <p> This method executes in an unspecified transaction context.
*
* @exception EJBException Thrown by the method to indicate a failure
* caused by a system-level error.
*
* @exception RemoteException This exception is defined in the method
* signature to provide backward compatibility for enterprise beans
* written for the EJB 1.0 specification. Enterprise beans written
* for the EJB 1.1 specification should throw the
* javax.ejb.EJBException instead of this exception.
* Enterprise beans written for the EJB2.0 and higher specifications
* must throw the javax.ejb.EJBException instead of this exception.
*/
public void ejbActivate() throws EJBException, RemoteException;
/**
* A container invokes this method on an instance before the instance
* becomes disassociated with a specific EJB object. After this method
* completes, the container will place the instance into the pool of
* available instances.
*
* <p> This method executes in an unspecified transaction context.
*
* @exception EJBException Thrown by the method to indicate a failure
* caused by a system-level error.
*
* @exception RemoteException This exception is defined in the method
* signature to provide backward compatibility for enterprise beans
* written for the EJB 1.0 specification. Enterprise beans written
* for the EJB 1.1 specification should throw the
* javax.ejb.EJBException instead of this exception.
* Enterprise beans written for the EJB2.0 and higher specifications
* must throw the javax.ejb.EJBException instead of this exception.
*/
public void ejbPassivate() throws EJBException, RemoteException;
/**
* A container invokes this method to instruct the
* instance to synchronize its state by loading it state from the
* underlying database.
*
* <p> This method always executes in the transaction context determined
* by the value of the transaction attribute in the deployment descriptor.
*
* @exception EJBException Thrown by the method to indicate a failure
* caused by a system-level error.
*
* @exception RemoteException This exception is defined in the method
* signature to provide backward compatibility for enterprise beans
* written for the EJB 1.0 specification. Enterprise beans written
* for the EJB 1.1 specification should throw the
* javax.ejb.EJBException instead of this exception.
* Enterprise beans written for the EJB2.0 and higher specifications
* must throw the javax.ejb.EJBException instead of this exception.
*/
public void ejbLoad() throws EJBException, RemoteException;
/**
* A container invokes this method to instruct the
* instance to synchronize its state by storing it to the underlying
* database.
*
* <p> This method always executes in the transaction context determined
* by the value of the transaction attribute in the deployment descriptor.
*
* @exception EJBException Thrown by the method to indicate a failure
* caused by a system-level error.
*
* @exception RemoteException This exception is defined in the method
* signature to provide backward compatibility for enterprise beans
* written for the EJB 1.0 specification. Enterprise beans written
* for the EJB 1.1 specification should throw the
* javax.ejb.EJBException instead of this exception.
* Enterprise beans written for the EJB2.0 and higher specifications
* must throw the javax.ejb.EJBException instead of this exception.
*/
public void ejbStore() throws EJBException, RemoteException;
}