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package javax.ejb;

import java.rmi.RemoteException;

/**
 * The SessionBean interface is implemented by every session enterprise
 * Bean class. The container uses the SessionBean methods to notify the
 * enterprise Bean instances of the instance's life cycle events.
 */
public interface SessionBean extends EnterpriseBean {

   /**
    * Set the associated session context. The container calls this method after the instance creation.
    *
    * The enterprise Bean instance should store the reference to the context object in an instance variable.
    *
    * This method is called with no transaction context.
    *
    * @param ctx - A SessionContext interface for the instance.
    * @exception EJBException - Thrown by the method to indicate a failure caused by a system-level error.
    * @exception java.rmi.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 setSessionContext(SessionContext ctx) throws EJBException, RemoteException;

  /**
   * A container invokes this method before it ends the life of the session object. This happens
   * as a result of a client's invoking a remove operation, or when a container decides to terminate
   * the session object after a timeout.
   *
   * This method is called with no transaction context.
   *
   * @exception EJBException - Thrown by the method to indicate a failure caused by a system-level error.
   * @exception java.rmi.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 EJBException, RemoteException;

   /**
    * The activate method is called when the instance is activated from its "passive" state.
    * The instance should acquire any resource that it has released earlier in the ejbPassivate() method.
    *
    * This method is called with no transaction context.
    *
    * @exception EJBException - Thrown by the method to indicate a failure caused by a system-level error.
    * @exception java.rmi.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;

   /**
    * The passivate method is called before the instance enters the "passive" state. The instance should
    * release any resources that it can re-acquire later in the ejbActivate() method.
    *
    * After the passivate method completes, the instance must be in a state that allows the container to
    * use the Java Serialization protocol to externalize and store away the instance's state.
    *
    * This method is called with no transaction context.
    *
    * @exception EJBException - Thrown by the method to indicate a failure caused by a system-level error.
    * @exception java.rmi.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;
}