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package javax.security.auth.message;
import java.util.Map;
/**
* A message processing runtime uses this interface to pass messages and
* message processing state to authentication contexts for processing by
* authentication modules.
* <p>
* This interface encapsulates a request message object and
* a response message object for a message exchange.
* This interface may also be used to associate additional context
* in the form of key/value pairs, with the encapsulated messages.
* <p>
* Every implementation of this interface should provide a zero argument
* constructor, and a constructor which takes a single Map argument.
* Additional constructors may also be provided.
* <p>
*
* @version %I%, %G%
* @see Map
*/
public interface MessageInfo {
/**
* Get the request message object from this MessageInfo.
*
* @return An object representing the request message,
* or null if no request message is set within the MessageInfo.
*/
public Object getRequestMessage();
/**
* Get the response message object from this MessageInfo.
*
* @return an object representing the response message,
* or null if no response message is set within the MessageInfo.
*/
public Object getResponseMessage();
/**
* Set the request message object in this MessageInfo.
* @param request An object representing the request message.
*/
public void setRequestMessage(Object request);
/**
* Set the response message object in this MessageInfo.
* @param response An object representing the response message.
*/
public void setResponseMessage(Object response);
/**
* Get (a reference to) the Map object of this MessageInfo.
* Operations performed on the acquired Map must effect the
* Map within the MessageInfo.
*
* @return the Map object of this MessageInfo.
* This method never returns null. If a Map has not
* been associated with the MessageInfo, this method
* instantiates a Map, associates it with this MessageInfo,
* and then returns it.
*/
public Map getMap();
}