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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10 * this list of conditions and the following disclaimer.
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13 * this list of conditions and the following disclaimer in the documentation
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16 * 3. The end-user documentation included with the redistribution, if any, must
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.
22 * 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
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25 * Project JXTA at http://www.jxta.org.
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42 * States and other countries.
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.binaryID;
60 import java.util.logging.Logger;
64 * The 'BinaryID' format is a general purpose JXTA ID Format. It implements all of
65 * the six standard ID types. It was originally created for the Java 2 SE
66 * reference implementation. The 'BinaryID' format uses randomly generated BinaryIDs
67 * as the mechanism for generating canonical values for the ids it provides.
69 * @author Daniel Brookshier <a HREF="mailto:turbogeek@cluck.com">turbogeek@cluck.com</a>
71 public class IDFormat {
76 private final static transient Logger LOG = Logger.getLogger(IDFormat.class.getName());
79 * This table maps our local private versions of the well known ids to the
80 * globally known version.
83 final static Object[][] wellKnownIDs = {
84 { net.jxta.peergroup.PeerGroupID.worldPeerGroupID, net.jxta.impl.id.UUID.IDFormat.worldPeerGroupID}
86 { net.jxta.peergroup.PeerGroupID.defaultNetPeerGroupID, net.jxta.impl.id.UUID.IDFormat.defaultNetPeerGroupID}
90 * The instantiator for this ID Format which is used by the IDFactory.
92 public static final net.jxta.impl.id.binaryID.Instantiator INSTANTIATOR = new net.jxta.impl.id.binaryID.Instantiator();
95 * Private Constructor. This class cannot be instantiated.
100 * Translate from well known ID to our locally encoded versions.
102 * @param input the id to be translated.
103 * @return the translated ID or the input ID if no translation was needed.
106 static net.jxta.id.ID translateFromWellKnown(net.jxta.id.ID input) {
107 for (int eachWellKnown = 0; eachWellKnown < wellKnownIDs.length; eachWellKnown++) {
108 net.jxta.id.ID aWellKnown = (net.jxta.id.ID) wellKnownIDs[eachWellKnown][0];
110 if (aWellKnown.equals(input)) {
111 return (net.jxta.id.ID) wellKnownIDs[eachWellKnown][1];
119 * Translate from locally encoded versions to the well known versions.
121 * @param input the id to be translated.
122 * @return the translated ID or the input ID if no translation was needed.
125 static net.jxta.id.ID translateToWellKnown(net.jxta.id.ID input) {
126 for (int eachWellKnown = 0; eachWellKnown < wellKnownIDs.length; eachWellKnown++) {
127 net.jxta.id.ID aLocalEncoding = (net.jxta.id.ID) wellKnownIDs[eachWellKnown][1];
129 if (aLocalEncoding.equals(input)) {
130 return (net.jxta.id.ID) wellKnownIDs[eachWellKnown][0];
138 * Utility method used to strip only the most significant peer group ID.
139 * This prevents us from continiously appending grandparents to each child.
142 * This method is used in PipeID and PeerID.
145 * @param peerGroupID Peer group ID to pull the child from.
146 * @return Child of the peer group.
148 public static String childGroup(net.jxta.peergroup.PeerGroupID peerGroupID) {
149 String parentStr = (String) peerGroupID.getUniqueValue();
150 // Child is the first ID
151 int first = parentStr.indexOf('.');
155 child = parentStr.substring(0, first);