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
018 package org.apache.geronimo.security;
019
020 import java.io.Serializable;
021
022
023 /**
024 * @version $Rev: 706640 $ $Date: 2008-10-21 14:44:05 +0000 (Tue, 21 Oct 2008) $
025 */
026 public class SubjectId implements Serializable {
027 private final Long subjectId;
028 private final byte[] hash;
029 private transient int hashCode;
030 private transient String name;
031
032 public SubjectId(Long subjectId, byte[] hash) {
033 if (subjectId == null) throw new IllegalArgumentException("subjectId cannot be null");
034 if (hash == null) throw new IllegalArgumentException("hash cannot be null");
035
036 this.subjectId = subjectId;
037 this.hash = hash;
038 }
039
040 public Long getSubjectId() {
041 return subjectId;
042 }
043
044 public byte[] getHash() {
045 return hash;
046 }
047
048 public boolean equals(Object obj) {
049 if (!(obj instanceof SubjectId)) return false;
050
051 SubjectId another = (SubjectId) obj;
052 if (!another.subjectId.equals(subjectId)) return false;
053 for (int i = 0; i < hash.length; i++) {
054 if (another.hash[i] != hash[i]) return false;
055 }
056 return true;
057 }
058
059 public String toString() {
060 if (name == null) {
061 StringBuffer buffer = new StringBuffer();
062 buffer.append('[');
063 buffer.append(subjectId);
064 buffer.append(":0x");
065 for (int i = 0; i < hash.length; i++) {
066 buffer.append(HEXCHAR[(hash[i]>>>4)&0x0F]);
067 buffer.append(HEXCHAR[(hash[i] )&0x0F]);
068 }
069 buffer.append(']');
070 name = buffer.toString();
071 }
072 return name;
073 }
074
075 /**
076 * Returns a hashcode for this LoginModuleId.
077 *
078 * @return a hashcode for this LoginModuleId.
079 */
080 public int hashCode() {
081 if (hashCode == 0) {
082 for (int i = 0; i < hash.length; i++) {
083 hashCode ^= hash[i];
084 }
085 hashCode ^= subjectId.hashCode();
086 }
087 return hashCode;
088 }
089
090 private static final char[] HEXCHAR = {
091 '0', '1', '2', '3', '4', '5', '6', '7',
092 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
093 };
094 }