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Posted to dev@commons.apache.org by ps...@apache.org on 2004/01/11 10:16:20 UTC
cvs commit: jakarta-commons-sandbox/id/src/test/org/apache/commons/id/uuid UUIDTest.java
psteitz 2004/01/11 01:16:20
Added: id/src/java/org/apache/commons/id/uuid UUID.java
UUIDFormatException.java
id/src/test/org/apache/commons/id/uuid UUIDTest.java
Log:
Added UUID, UUIDFormatException and associated tests.
Contributed by: Tim Reilly
Pr: #26035
Reviewed by: Phil Steitz
Revision Changes Path
1.1 jakarta-commons-sandbox/id/src/java/org/apache/commons/id/uuid/UUID.java
Index: UUID.java
===================================================================
/*
* $Header: /home/cvs/jakarta-commons-sandbox/id/src/java/org/apache/commons/id/uuid/UUID.java,v 1.1 2004/01/11 09:16:20 psteitz Exp $
* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2004 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.commons.id.uuid;
import java.io.Serializable;
import java.math.BigInteger;
import java.util.StringTokenizer;
/**
* <p><code>UUID</code> represents a Universally Unique Identifier per IETF
* Draft specification. For more information regarding the IETF Draft UUID
* specification</p>
*
* <p>See: http://www.ietf.org/internet-drafts/draft-mealling-uuid-urn-01.txt</p>
*
* @version $Revision: 1.1 $ $Date: 2004/01/11 09:16:20 $
*
*/
public class UUID implements Serializable, Cloneable {
/** Bits in a UUID */
public static final int BIT_LENGTH = 128;
/** Chars in a UUID String */
public static final int RAW_CHAR_LENGTH = 32;
/** Chars in a UUID String */
public static final int CHAR_LENGTH = 36;
/** Token length of '-' separated tokens */
public static final int TOKENS_IN_UUID = 5;
/** The string prefix for a urn UUID identifier */
public static final String URN_PREFIX = "urn:uuid:";
/** Base for hexidecimal used in parse and format */
public static final int BASE16 = 16;
/** Array to check tokenized UUID's segment lengths */
private static final int[] TOKEN_LENGTHS = {8, 4, 4, 4, 12};
/** Insertion point 1 for dashes in the string format */
private static final int FORMAT_POSITION1 = 8;
/** Insertion point 2 for dashes in the string format */
private static final int FORMAT_POSITION2 = 13;
/** Insertion point 3 for dashes in the string format */
private static final int FORMAT_POSITION3 = 18;
/** Insertion point 4 for dashes in the string format */
private static final int FORMAT_POSITION4 = 23;
/** byte array to store 128-bits composing this UUID */
private BigInteger numberValue = null;
/** Holds the internal string value of the UUID */
private String stringValue = null;
/** Constructs a nil UUID */
public UUID() {
super();
numberValue = new BigInteger("0");
}
/**
* <p>Copy constructor.</p>
*
* @param copyFrom the UUID to copy to create this UUID.
* @throws IllegalArgumentException argument must be 128 bit UUID.
*/
public UUID(UUID copyFrom) throws IllegalArgumentException {
super();
this.numberValue =
new BigInteger(copyFrom.toBigInteger().toByteArray());
this.stringValue = copyFrom.toString();
}
/**
* <p>Constructs a UUID from a 128 bit java.math.BigInteger.</p>
*
* @param bigIntValue the 128 bit BigInteger to construct this UUID from.
* @throws IllegalArgumentException argument must be 128 bit
*/
public UUID(BigInteger bigIntValue) throws IllegalArgumentException {
super();
if ((bigIntValue.bitLength() > UUID.BIT_LENGTH) || (bigIntValue.signum() < 0) ) {
throw new IllegalArgumentException("UUID must be contructed using a 128 bit BigInteger");
}
numberValue = bigIntValue;
}
/**
* <p>Constructs a UUID from a UUID formatted String.</p>
*
* @param uuidString the String representing a UUID to construct this UUID
* @throws UUIDFormatException String must be a properly formatted UUID string
*/
public UUID(String uuidString) throws UUIDFormatException {
//Calls the copy constructor
this(UUID.parseString(uuidString));
}
/**
* <p>Parses a string for a UUID.</p>
*
* @param uuidString the UUID formatted String to parse.
* @throws UUIDFormatException the String must be a properly formatted UUID String.
* @return Returns a UUID or null if the formatted string could not be parsed.
*/
public static UUID parseString(String uuidString)
throws UUIDFormatException {
String leanString = uuidString.toLowerCase();
UUID tmpUUID = null;
//Handle prefixed UUIDs
// e.g. urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6
int pos = uuidString.lastIndexOf(":");
if (pos > 1) {
leanString = uuidString.substring(++pos, uuidString.length());
}
//Check for 36 char length
if (leanString.length() != CHAR_LENGTH) {
throw new UUIDFormatException();
}
//Check for 5 fields
StringTokenizer tok = new StringTokenizer(leanString, "-");
if ( tok.countTokens() != TOKENS_IN_UUID ) {
throw new UUIDFormatException();
}
//Remove the "-" from the formatted string and test token sizes
StringBuffer buf = new StringBuffer();
String token = null;
int count = 0;
while (tok.hasMoreTokens()) {
token = tok.nextToken();
if (token.length() != TOKEN_LENGTHS[count++]) {
throw new UUIDFormatException();
}
buf.append(token);
}
//Test creating a BigInteger from the hex value
BigInteger bigIntValue = null;
try {
bigIntValue = new BigInteger(buf.toString(), BASE16);
}
catch (NumberFormatException nfe) {
throw new UUIDFormatException();
}
//Construct the UUID to return
tmpUUID = new UUID(bigIntValue);
// Set the uuidString value - the stringValue is "lazy" so set it now.
tmpUUID.stringValue = leanString;
return tmpUUID;
}
/**
* <p>Returns a string representation of the UUID.</p>
*
* @return a string representation of the UUID formatted according to the specification.
*/
public String toString() {
//set string value if not set
if (stringValue == null) {
StringBuffer buf = new StringBuffer(numberValue.toString(BASE16));
while (buf.length() != RAW_CHAR_LENGTH) {
buf.insert(0, "0");
}
buf.insert(FORMAT_POSITION1, '-');
buf.insert(FORMAT_POSITION2, '-');
buf.insert(FORMAT_POSITION3, '-');
buf.insert(FORMAT_POSITION4, '-');
stringValue = buf.toString();
}
return stringValue;
}
/**
* <p>Returns a urn representation of the UUID. This is same as the
* toString() value prefixed with <code>urn:uuid:</code></p>
*
* @return Returns the urn string representation of the UUID
*/
public String toUrn() {
if (numberValue == null) {
return null;
}
return URN_PREFIX + this.toString();
}
/**
* <p>Returns the BigInteger representation of this UUID.</p>
*
* @return returns a BigInteger representing the value of this UUID
*/
public BigInteger toBigInteger() {
return numberValue;
}
/**
* <p>Compares two UUID for equality.</p>
*
* @see java.lang.Object#equals(Object)
*/
public boolean equals(Object obj) {
if (!(obj instanceof UUID)) {
return false;
}
return ((UUID) obj).toBigInteger().equals(this.numberValue);
}
/**
* <p>Returns a hash code value for the object.</p>
*
* @see java.lang.Object#hashCode()
*/
public int hashCode() {
return this.numberValue.hashCode();
}
/**
* </p>Clone method returns a copy of this UUID.</p>
*
* @see java.lang.Object#clone()
*/
public Object clone() {
return new UUID(this);
}
}
1.1 jakarta-commons-sandbox/id/src/java/org/apache/commons/id/uuid/UUIDFormatException.java
Index: UUIDFormatException.java
===================================================================
/*
* $Header: /home/cvs/jakarta-commons-sandbox/id/src/java/org/apache/commons/id/uuid/UUIDFormatException.java,v 1.1 2004/01/11 09:16:20 psteitz Exp $
* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2004 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.commons.id.uuid;
/**
* <p>Thrown to indicate an attempted to convert a string to a UUID, but that the
* string does not have the appropriate format.</p>
*
* @see UUID#toString()
* @see UUID#parseString(String)
* @see UUID#UUID(String)
*
* @version $Revision: 1.1 $ $Date: 2004/01/11 09:16:20 $
*
*/
public class UUIDFormatException extends Exception {
/**
* <p>Constructs a <code>UUIDFormatException</code> with no message.</p>
*/
public UUIDFormatException() {
super();
}
/**
* </p>Constructs a <code>UUIDFormatException</code> with a message.</p>
*
* @param msg the String message for this exception.
*/
public UUIDFormatException(String msg) {
super(msg);
}
}
1.1 jakarta-commons-sandbox/id/src/test/org/apache/commons/id/uuid/UUIDTest.java
Index: UUIDTest.java
===================================================================
/*
*===================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2004 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache Geronimo" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* "Apache Geronimo", nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* ====================================================================
*/
package org.apache.commons.id.uuid;
import java.math.BigInteger;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import junit.textui.TestRunner;
/**
* Unit tests for {@link UUID}.
*
* @version $Revision: 1.1 $ $Date: 2004/01/11 09:16:20 $
* @author Commons-id team
*/
public class UUIDTest extends TestCase {
/**
* Constructor for test
*
* @param name String name of the test
*/
public UUIDTest(String name) {
super(name);
}
/**
* Main application method
*
* @param args String arguments array
*/
public static void main(String[] args) {
TestRunner.run(suite());
}
/** @see junit.framework.TestCase#suite() */
public static Test suite() {
TestSuite suite = new TestSuite(UUIDTest.class);
suite.setName("UUID Tests");
return suite;
}
//-------------------------------------------------------------------------
/** @see junit.framework.TestCase#setUp() */
protected void setUp() throws Exception {
super.setUp();
}
/**
* Test the nil UUID() contructor returns a zero'd out UUID
*
* @throws Exception an exception while testing
*/
public void testNiltoString() throws Exception {
assertEquals(
(new UUID()).toString(),
"00000000-0000-0000-0000-000000000000");
}
/**
* Test copy constructor
*
* @throws Exception an exception while testing
*/
public void testCopyConstructor() throws Exception {
UUID uuidFrom = new UUID("B4F00409-CEF8-4822-802C-DEB20704C365");
UUID uuidTo = new UUID(uuidFrom);
//Assert all equals and output methods match
assertTrue(uuidFrom.equals(uuidTo));
assertTrue(uuidTo.equals(uuidFrom));
assertEquals(uuidTo.toString(), uuidFrom.toString());
assertEquals(uuidTo.toBigInteger(), uuidFrom.toBigInteger());
assertEquals(uuidTo.hashCode(), uuidFrom.hashCode());
}
/**
* Test BigInteger constructor
*
* @throws Exception an exception while testing
*/
public void testBigIntegerConstructor() throws Exception {
UUID uuidFrom = new UUID("B4F00409-CEF8-4822-802C-DEB20704C365");
UUID uuidTo = new UUID(uuidFrom.toBigInteger());
//Assert all equals and output methods match
assertTrue(uuidFrom.equals(uuidTo));
assertTrue(uuidTo.equals(uuidFrom));
assertEquals(uuidTo.toString(), uuidFrom.toString());
assertEquals(uuidTo.toBigInteger(), uuidFrom.toBigInteger());
assertEquals(uuidTo.hashCode(), uuidFrom.hashCode());
//Test IllegalArgumentException in Construction
UUID badConstruction = null;
BigInteger maxUUIDInteger =
new BigInteger("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16);
try {
BigInteger tooBig = maxUUIDInteger.add(BigInteger.ONE);
badConstruction = new UUID(tooBig);
fail("Expecting IllegalArgumentException -- BigInteger too big.");
}
catch (IllegalArgumentException iea) {
// expected
}
try {
BigInteger tooSmall = new BigInteger("-1");
badConstruction = new UUID(tooSmall);
fail("Expecting IllegalArgumentException -- BigInteger too small.");
}
catch (IllegalArgumentException iea) {
// expected
}
}
/**
* Test String constructor
*
* @throws Exception an exception while testing
*/
public void testStringConstructor() throws Exception {
UUID uuidFrom = new UUID("B4F00409-CEF8-4822-802C-DEB20704C365");
UUID uuidTo = new UUID(uuidFrom.toBigInteger());
//Assert all equals and output methods match
assertTrue(uuidFrom.equals(uuidTo));
assertTrue(uuidTo.equals(uuidFrom));
assertEquals(uuidTo.toString(), uuidFrom.toString());
assertEquals(uuidTo.toBigInteger(), uuidFrom.toBigInteger());
assertEquals(uuidTo.hashCode(), uuidFrom.hashCode());
//Test constructing prefixed strings
UUID fromPrefixed =
new UUID("urn:uuid:B4F00409-CEF8-4822-802C-DEB20704C365");
assertTrue(uuidFrom.equals(fromPrefixed));
//Test constructing prefixed strings
UUID fromShortPrefixed =
new UUID("uuid:B4F00409-CEF8-4822-802C-DEB20704C365");
assertTrue(uuidFrom.equals(fromPrefixed));
//Test IllegalArgumentException in Construction
UUID badConstruction = null;
//try with not valid hexidecimal
try {
badConstruction = new UUID("G4F00409-CEF8-4822-802C-DEB20704C365");
fail("Expecting UUIDFormatException -- invalid hex string");
}
catch (UUIDFormatException iea) {}
//try with too long a string
try {
badConstruction = new UUID("FF4F00409-CEF8-4822-802C-DEB20704C365");
fail("Expecting UUIDFormatException -- string too long");
}
catch (UUIDFormatException iea) {}
//try with too short a string
try {
badConstruction = new UUID("4F00409-CEF8-4822-802C-DEB20704C365");
fail("Expecting UUIDFormatException -- string too short");
}
catch (UUIDFormatException iea) {}
//try right string wrong order / format
try {
badConstruction = new UUID("F4F00409-CEF8-4822-802CD-EB20704C365");
fail("Expecting UUIDFormatException -- wrong format");
}
catch (UUIDFormatException iea) {}
}
/**
* Test the static parseString method
*
* @throws Exception an exception while testing
*/
public void testParseString() throws Exception {
UUID baseline = new UUID("B4F00409-CEF8-4822-802C-DEB20704C365");
assertEquals(
baseline,
UUID.parseString("urn:uuid:B4F00409-CEF8-4822-802C-DEB20704C365"));
assertEquals(
baseline,
UUID.parseString("uuid:B4F00409-CEF8-4822-802C-DEB20704C365"));
//Negative testing
//try with not valid hexidecimal
UUID bad = null;
try {
bad = UUID.parseString("G4F00409-CEF8-4822-802C-DEB20704C365");
fail("Expecting UUIDFormatException -- invalid hex");
}
catch (UUIDFormatException iea) {}
//try with too long a string
try {
bad = UUID.parseString("FF4F00409-CEF8-4822-802C-DEB20704C365");
fail("Expecting UUIDFormatException -- string too long");
}
catch (UUIDFormatException iea) {}
//try with too short a string
try {
bad = UUID.parseString("4F00409-CEF8-4822-802C-DEB20704C365");
fail("Expecting UUIDFormatException -- string too short");
}
catch (UUIDFormatException iea) {}
//try right string wrong order / format
try {
bad = UUID.parseString("F4F00409-CEF8-4822-802CD-EB20704C365");
fail("Expecting UUIDFormatException -- wrong format");
}
catch (UUIDFormatException iea) {}
}
/**
* Test the toString of UUID
*
* @throws Exception an exception while testing
*/
public void testToString() throws Exception {
assertEquals(
(new UUID("f81d4fae-7dec-11d0-a765-00a0c91e6bf6")).toString(),
"f81d4fae-7dec-11d0-a765-00a0c91e6bf6");
}
/**
* Test the toUrn method
*
* @throws Exception an exception while testing
*/
public void testToUrn() throws Exception {
assertEquals(
(new UUID("f81d4fae-7dec-11d0-a765-00a0c91e6bf6")).toUrn(),
"urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6");
}
/**
* Test the toBigInteger method
*
* @throws Exception an exception while testing
*/
public void testToBigInteger() throws Exception {
BigInteger bigInt =
new BigInteger("f81d4fae7dec11d0a76500a0c91e6bf6", 16);
assertEquals((new UUID(bigInt)).toBigInteger(), bigInt);
}
/**
* Test the contract of Object.clone
*
* @throws Exception an exception while testing
*/
public void testClone() throws Exception {
UUID x = new UUID();
assertTrue(x.clone() != x);
assertTrue(x.clone().getClass() == x.getClass());
assertTrue(x.clone().equals(x));
}
}
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