net.sourceforge.jtds.jdbc.UniqueIdentifier Maven / Gradle / Ivy
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// jTDS JDBC Driver for Microsoft SQL Server and Sybase
// Copyright (C) 2004 The jTDS Project
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
package net.sourceforge.jtds.jdbc;
/**
* This class encapsulates the MS SQL2000 UniqueIdentifer data type.
*
* @author Mike Hutchinson.
* @version $Id: UniqueIdentifier.java,v 1.4 2005/04/28 14:29:30 alin_sinpalean Exp $
*/
public class UniqueIdentifier {
private final byte[] bytes;
/**
* Construct a unique identifier with the supplied byte array.
*/
public UniqueIdentifier(byte[] id) {
bytes = id;
}
/**
* Retrieve the unique identifier as a byte array.
*
* @return The unique identifier as a byte[].
*/
public byte[] getBytes() {
return (byte [])bytes.clone();
}
/**
* Retrieve the unique identifier as a formatted string.
* Format is NNNNNNNN-NNNN-NNNN-NNNN-NNNNNNNNNNNN.
*
* @return The uniqueidentifier as a String.
*/
public String toString() {
byte[] tmp = bytes;
if (bytes.length == 16) {
// Need to swap some bytes for correct text version
tmp = new byte[bytes.length];
System.arraycopy(bytes, 0, tmp, 0, bytes.length);
tmp[0] = bytes[3];
tmp[1] = bytes[2];
tmp[2] = bytes[1];
tmp[3] = bytes[0];
tmp[4] = bytes[5];
tmp[5] = bytes[4];
tmp[6] = bytes[7];
tmp[7] = bytes[6];
}
byte bb[] = new byte[1];
StringBuffer buf = new StringBuffer(36);
for (int i = 0; i < bytes.length; i++) {
bb[0] = tmp[i];
buf.append(Support.toHex(bb));
if (i == 3 || i == 5 || i == 7 || i == 9) {
buf.append('-');
}
}
return buf.toString();
}
}