org.openscience.nmrshiftdb.util
Class GenerateId

java.lang.Object
  org.openscience.nmrshiftdb.util.GenerateId

public class GenerateId
extends java.lang.Object

Class for generating unique Identifiers

Author:

hel

Field Summary

private static java.lang.String

spectrumID

Constructor Summary

GenerateId()

Method Summary

static java.lang.String	GenerateId() Generates a unique identifier by generating a random number and getting its digest
private static java.lang.String	hexEncode(byte[] aInput) The byte[] returned by MessageDigest does not have a nice textual representation, so some form of encoding is usually performed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

spectrumID

private static java.lang.String spectrumID

Constructor Detail

GenerateId

public GenerateId()

Method Detail

GenerateId

public static java.lang.String GenerateId()

Generates a unique identifier by generating a random number and getting its digest

Returns:

the new SpectrumID

hexEncode

private static java.lang.String hexEncode(byte[] aInput)

The byte[] returned by MessageDigest does not have a nice textual representation, so some form of encoding is usually performed. This implementation follows the example of David Flanagan's book "Java In A Nutshell", and converts a byte array into a String of hex characters. Another popular alternative is to use a "Base64" encoding.

Parameters:

aInput - byte array build by GenerateId().

Returns:

the resulting unique identifier string.