| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| ListenerKey |
|
| 3.4;3.4 |
| 1 | /* | |
| 2 | * Copyright (C) The Apache Software Foundation. All rights reserved. | |
| 3 | * | |
| 4 | * This software is published under the terms of the Apache Software License | |
| 5 | * version 1.1, a copy of which has been included with this distribution in | |
| 6 | * the LICENSE file. | |
| 7 | * | |
| 8 | * $Id: ListenerKey.java 155459 2005-02-26 13:24:44Z dirkv $ | |
| 9 | */ | |
| 10 | package org.apache.commons.messenger; | |
| 11 | ||
| 12 | import javax.jms.Destination; | |
| 13 | import javax.jms.MessageListener; | |
| 14 | ||
| 15 | ||
| 16 | /** <p><code>ListenerKey</code> is an implementation class allowing a Destination, | |
| 17 | * MessageListener and an optional selector to be used as a key to a Map so that | |
| 18 | * a single subscription can be easily associated with a MessageConsumer. | |
| 19 | * | |
| 20 | * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> | |
| 21 | * @version $Revision: 155459 $ | |
| 22 | */ | |
| 23 | class ListenerKey { | |
| 24 | ||
| 25 | private Destination destination; | |
| 26 | private MessageListener messageListener; | |
| 27 | private String selector; | |
| 28 | private int hashCode; | |
| 29 | ||
| 30 | public ListenerKey(Destination destination, MessageListener messageListener) { | |
| 31 | 0 | this( destination, messageListener, null ); |
| 32 | 0 | } |
| 33 | ||
| 34 | 0 | public ListenerKey(Destination destination, MessageListener messageListener, String selector) { |
| 35 | 0 | this.destination = destination; |
| 36 | 0 | this.messageListener = messageListener; |
| 37 | 0 | this.selector = selector; |
| 38 | 0 | this.hashCode = destination.hashCode() ^ messageListener.hashCode(); |
| 39 | 0 | if ( selector != null ) { |
| 40 | 0 | this.hashCode ^= selector.hashCode(); |
| 41 | } | |
| 42 | 0 | } |
| 43 | ||
| 44 | public int hashCode() { | |
| 45 | 0 | return hashCode; |
| 46 | } | |
| 47 | ||
| 48 | public boolean equals(Object that) { | |
| 49 | 0 | if ( this == that ) { |
| 50 | 0 | return true; |
| 51 | } | |
| 52 | 0 | if (that instanceof ListenerKey) { |
| 53 | 0 | return equals((ListenerKey) that); |
| 54 | } | |
| 55 | 0 | return false; |
| 56 | } | |
| 57 | ||
| 58 | public boolean equals(ListenerKey that) { | |
| 59 | 0 | if ( this == that ) { |
| 60 | 0 | return true; |
| 61 | } | |
| 62 | 0 | if ( this.hashCode == that.hashCode ) { |
| 63 | 0 | if ( this.destination.equals( that.destination ) && this.messageListener.equals( that.messageListener) ) { |
| 64 | 0 | if ( this.selector == that.selector ) { |
| 65 | 0 | return true; |
| 66 | } | |
| 67 | 0 | return this.selector != null && this.selector.equals( that.selector ); |
| 68 | } | |
| 69 | } | |
| 70 | 0 | return false; |
| 71 | } | |
| 72 | ||
| 73 | } | |
| 74 |