org.jboss.util.id
Class GUID

java.lang.Object
  org.jboss.util.id.GUID

All Implemented Interfaces:

java.lang.Cloneable, java.lang.Comparable, ID (src) , java.io.Serializable

public class GUID

extends java.lang.Object

implements ID (src) , java.lang.Comparable

A globally unique identifier (globally across a cluster of virtual machines).

The identifier is composed of:

1. The VMID for the virtual machine.
2. A UID to provide uniqueness over a VMID.

    [ address ] - [ process id ] - [ time ] - [ counter ] - [ time ] - [ counter ]
                                   |------- UID --------|   |------- UID --------|
    |---------------------- VMID -----------------------|
 

See Also:

VMID (src) , UID (src) , Serialized Form

vmid

protected final VMID (src)  vmid

The virtual machine identifier

uid

protected final UID (src)  uid

The unique identifier

hashCode

protected final int hashCode

The hash code of this GUID

GUID

public GUID()

Construct a new GUID.

GUID

protected GUID(GUID (src)  guid)

Copy a GUID.

Parameters:

guid - GUID to copy.

getVMID

public final VMID (src)  getVMID()

Get the VMID portion of this GUID.

Returns:

The VMID portion of this GUID.

getUID

public final UID (src)  getUID()

Get the UID portion of this GUID.

Returns:

The UID portion of this GUID.

toString

public java.lang.String toString()

Return a string representation of this GUID.

Returns:

A string representation of this GUID.

hashCode

public int hashCode()

Return the hash code of this GUID.

Returns:

The hash code of this GUID.

equals

public boolean equals(java.lang.Object obj)

Check if the given object is equal to this GUID.

A GUID is equal to another GUID if the VMID and UID portions are equal.

Parameters:

obj - Object to test equality with.

Returns:

True if object is equal to this GUID.

clone

public java.lang.Object clone()

Returns a copy of this GUID.

Returns:

A copy of this GUID.

asString

public static java.lang.String asString()

Returns a GUID as a string.

Returns:

GUID as a string.

compareTo

public int compareTo(java.lang.Object o)

Specified by:

compareTo in interface java.lang.Comparable