2 * Copyright (c) 2001-2007 Sun Microsystems, Inc. All rights reserved.
4 * The Sun Project JXTA(TM) Software License
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
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17 * include the following acknowledgment: "This product includes software
18 * developed by Sun Microsystems, Inc. for JXTA(TM) technology."
19 * Alternately, this acknowledgment may appear in the software itself, if
20 * and wherever such third-party acknowledgments normally appear.
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25 * Project JXTA at http://www.jxta.org.
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44 * Please see the license information page at :
45 * <http://www.jxta.org/project/www/license.html> for instructions on use of
46 * the license in source files.
48 * ====================================================================
50 * This software consists of voluntary contributions made by many individuals
51 * on behalf of Project JXTA. For more information on Project JXTA, please see
52 * http://www.jxta.org.
54 * This license is based on the BSD license adopted by the Apache Foundation.
57 package net.jxta.impl.id.UUID;
61 * An implementation of the {@link net.jxta.peer.PeerID} ID Type.
63 public class PeerID extends net.jxta.peer.PeerID {
65 protected final static int groupIdOffset = 0;
66 protected final static int idOffset = PeerID.groupIdOffset + IDFormat.uuidSize;
67 protected final static int padOffset = PeerID.idOffset + IDFormat.uuidSize;
69 protected final static int padSize = IDFormat.flagsOffset - PeerID.padOffset;
77 * Used only internally.
81 id = new IDBytes(IDFormat.flagPeerID);
85 * Initializes contents from provided ID.
87 * @param id the ID data
89 protected PeerID(IDBytes id) {
95 * Creates a PeerID. A PeerGroupID is provided
97 * @param groupUUID the UUID of the group to which this will belong.
98 * @param idUUID the UUID which will be used for this pipe.
100 protected PeerID(UUID groupUUID, UUID idUUID) {
103 id.longIntoBytes(PipeID.groupIdOffset, groupUUID.getMostSignificantBits());
104 id.longIntoBytes(PipeID.groupIdOffset + 8, groupUUID.getLeastSignificantBits());
106 id.longIntoBytes(PipeID.idOffset, idUUID.getMostSignificantBits());
107 id.longIntoBytes(PipeID.idOffset + 8, idUUID.getLeastSignificantBits());
111 * See {@link net.jxta.id.IDFactory.Instantiator#newPeerID(net.jxta.peergroup.PeerGroupID)}.
113 public PeerID(PeerGroupID groupID) {
114 this(groupID.getUUID(), UUIDFactory.newUUID());
118 * See {@link net.jxta.id.IDFactory.Instantiator#newPeerID(net.jxta.peergroup.PeerGroupID,byte[])}.
120 public PeerID(PeerGroupID groupID, byte[] seed) {
123 UUID groupUUID = new UUID(groupID.id.bytesIntoLong(PeerGroupID.groupIdOffset)
125 groupID.id.bytesIntoLong(PeerGroupID.groupIdOffset + 8));
127 byte[] idUUIDbytes = new byte[IDFormat.uuidSize];
129 System.arraycopy(seed, 0, idUUIDbytes, 0, Math.min(IDFormat.uuidSize, seed.length));
131 UUID idUUID = UUIDFactory.newUUID(idUUIDbytes);
133 id.longIntoBytes(PipeID.groupIdOffset, groupUUID.getMostSignificantBits());
134 id.longIntoBytes(PipeID.groupIdOffset + 8, groupUUID.getLeastSignificantBits());
136 id.longIntoBytes(PipeID.idOffset, idUUID.getMostSignificantBits());
137 id.longIntoBytes(PipeID.idOffset + 8, idUUID.getLeastSignificantBits());
144 public boolean equals(Object target) {
145 if (this == target) {
149 if (target instanceof PeerID) {
150 PeerID peerTarget = (PeerID) target;
152 return id.equals(peerTarget.id);
162 public int hashCode() {
163 return id.hashCode();
170 public String getIDFormat() {
171 return IDFormat.INSTANTIATOR.getSupportedIDFormat();
178 public Object getUniqueValue() {
179 return getIDFormat() + "-" + (String) id.getUniqueValue();
186 public net.jxta.id.ID getPeerGroupID() {
187 UUID groupUUID = new UUID(id.bytesIntoLong(PeerID.groupIdOffset), id.bytesIntoLong(PeerID.groupIdOffset + 8));
189 PeerGroupID groupID = new PeerGroupID(groupUUID);
191 // convert to the generic world PGID as necessary
192 return IDFormat.translateToWellKnown(groupID);