001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.activemq.jaas; 018 019 import java.security.Principal; 020 021 /** 022 * @version $Rev: $ $Date: $ 023 */ 024 public class UserPrincipal implements Principal { 025 026 private final String name; 027 private transient int hash; 028 029 public UserPrincipal(String name) { 030 if (name == null) { 031 throw new IllegalArgumentException("name cannot be null"); 032 } 033 this.name = name; 034 } 035 036 @Override 037 public String getName() { 038 return name; 039 } 040 041 @Override 042 public boolean equals(Object o) { 043 if (this == o) { 044 return true; 045 } 046 if (o == null || getClass() != o.getClass()) { 047 return false; 048 } 049 050 final UserPrincipal that = (UserPrincipal)o; 051 052 if (!name.equals(that.name)) { 053 return false; 054 } 055 056 return true; 057 } 058 059 @Override 060 public int hashCode() { 061 if (hash == 0) { 062 hash = name.hashCode(); 063 } 064 return hash; 065 } 066 067 @Override 068 public String toString() { 069 return name; 070 } 071 }