| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| GUID |
|
| 1.6;1.6 |
| 1 | package org.apache.ojb.broker.util; | |
| 2 | ||
| 3 | /* Copyright 2002-2005 The Apache Software Foundation | |
| 4 | * | |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 6 | * you may not use this file except in compliance with the License. | |
| 7 | * You may obtain a copy of the License at | |
| 8 | * | |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 | * | |
| 11 | * Unless required by applicable law or agreed to in writing, software | |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 | * See the License for the specific language governing permissions and | |
| 15 | * limitations under the License. | |
| 16 | */ | |
| 17 | ||
| 18 | import java.io.Serializable; | |
| 19 | import java.net.InetAddress; | |
| 20 | import java.net.UnknownHostException; | |
| 21 | import java.rmi.server.UID; | |
| 22 | ||
| 23 | /** | |
| 24 | * simple GUID (Globally Unique ID) implementation. | |
| 25 | * A GUID is composed of two parts: | |
| 26 | * 1. The IP-Address of the local machine. | |
| 27 | * 2. A java.rmi.server.UID | |
| 28 | * | |
| 29 | * @author Thomas Mahler | |
| 30 | * @version $Id: GUID.java,v 1.1 2007-08-24 22:17:36 ewestfal Exp $ | |
| 31 | */ | |
| 32 | public class GUID implements Serializable | |
| 33 | { | |
| 34 | static final long serialVersionUID = -6163239155380515945L; /** | |
| 35 | * holds the hostname of the local machine. | |
| 36 | */ | |
| 37 | private static String localIPAddress; | |
| 38 | ||
| 39 | /** | |
| 40 | * String representation of the GUID | |
| 41 | */ | |
| 42 | private String guid; | |
| 43 | ||
| 44 | /** | |
| 45 | * compute the local IP-Address | |
| 46 | */ | |
| 47 | static | |
| 48 | { | |
| 49 | try | |
| 50 | { | |
| 51 | localIPAddress = InetAddress.getLocalHost().getHostAddress(); | |
| 52 | } | |
| 53 | catch (UnknownHostException e) | |
| 54 | { | |
| 55 | localIPAddress = "localhost"; | |
| 56 | } | |
| 57 | } | |
| 58 | ||
| 59 | /** | |
| 60 | * public no args constructor. | |
| 61 | */ | |
| 62 | public GUID() | |
| 63 | { | |
| 64 | UID uid = new UID(); | |
| 65 | StringBuffer buf = new StringBuffer(); | |
| 66 | buf.append(localIPAddress); | |
| 67 | buf.append(":"); | |
| 68 | buf.append(uid.toString()); | |
| 69 | guid = buf.toString(); | |
| 70 | } | |
| 71 | ||
| 72 | /** | |
| 73 | * public constructor. | |
| 74 | * The caller is responsible to feed a globally unique | |
| 75 | * String into the theGuidString parameter | |
| 76 | * @param theGuidString a globally unique String | |
| 77 | */ | |
| 78 | public GUID(String theGuidString) | |
| 79 | { | |
| 80 | guid = theGuidString; | |
| 81 | } | |
| 82 | ||
| 83 | /** | |
| 84 | * returns the String representation of the GUID | |
| 85 | */ | |
| 86 | public String toString() | |
| 87 | { | |
| 88 | return guid; | |
| 89 | } | |
| 90 | /** | |
| 91 | * @see java.lang.Object#equals(Object) | |
| 92 | */ | |
| 93 | public boolean equals(Object obj) | |
| 94 | { | |
| 95 | if (obj instanceof GUID) | |
| 96 | { | |
| 97 | if (guid.equals(((GUID) obj).guid)) | |
| 98 | { | |
| 99 | return true; | |
| 100 | } | |
| 101 | } | |
| 102 | return false; | |
| 103 | } | |
| 104 | ||
| 105 | /** | |
| 106 | * @see java.lang.Object#hashCode() | |
| 107 | */ | |
| 108 | public int hashCode() | |
| 109 | { | |
| 110 | return guid.hashCode(); | |
| 111 | } | |
| 112 | ||
| 113 | } |