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The source code

/*
 * Copyright 2001-2004 The Apache Software Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.commons.net;
import java.util.EventObject;

/***
 * There exists a large class of IETF protocols that work by sending an
 * ASCII text command and arguments to a server, and then receiving an
 * ASCII text reply.  For debugging and other purposes, it is extremely
 * useful to log or keep track of the contents of the protocol messages.
 * The ProtocolCommandEvent class coupled with the
 * 
 * ProtocolCommandListener  interface facilitate this process.
 * 

*

* @see ProtocolCommandListener * @see ProtocolCommandSupport * @author Daniel F. Savarese ***/ public class ProtocolCommandEvent extends EventObject { private int __replyCode; private boolean __isCommand; private String __message, __command; /*** * Creates a ProtocolCommandEvent signalling a command was sent to * the server. ProtocolCommandEvents created with this constructor * should only be sent after a command has been sent, but before the * reply has been received. *

* @param source The source of the event. * @param command The string representation of the command type sent, not * including the arguments (e.g., "STAT" or "GET"). * @param message The entire command string verbatim as sent to the server, * including all arguments. ***/ public ProtocolCommandEvent(Object source, String command, String message) { super(source); __replyCode = 0; __message = message; __isCommand = true; __command = command; } /*** * Creates a ProtocolCommandEvent signalling a reply to a command was * received. ProtocolCommandEvents created with this constructor * should only be sent after a complete command reply has been received * fromt a server. *

* @param source The source of the event. * @param replyCode The integer code indicating the natureof the reply. * This will be the protocol integer value for protocols * that use integer reply codes, or the reply class constant * corresponding to the reply for protocols like POP3 that use * strings like OK rather than integer codes (i.e., POP3Repy.OK). * @param message The entire reply as received from the server. ***/ public ProtocolCommandEvent(Object source, int replyCode, String message) { super(source); __replyCode = replyCode; __message = message; __isCommand = false; __command = null; } /*** * Returns the string representation of the command type sent (e.g., "STAT" * or "GET"). If the ProtocolCommandEvent is a reply event, then null * is returned. *

* @return The string representation of the command type sent, or null * if this is a reply event. ***/ public String getCommand() { return __command; } /*** * Returns the reply code of the received server reply. Undefined if * this is not a reply event. *

* @return The reply code of the received server reply. Undefined if * not a reply event. ***/ public int getReplyCode() { return __replyCode; } /*** * Returns true if the ProtocolCommandEvent was generated as a result * of sending a command. *

* @return true If the ProtocolCommandEvent was generated as a result * of sending a command. False otherwise. ***/ public boolean isCommand() { return __isCommand; } /*** * Returns true if the ProtocolCommandEvent was generated as a result * of receiving a reply. *

* @return true If the ProtocolCommandEvent was generated as a result * of receiving a reply. False otherwise. ***/ public boolean isReply() { return !isCommand(); } /*** * Returns the entire message sent to or received from the server. *

* @return The entire message sent to or received from the server. ***/ public String getMessage() { return __message; } }

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