org.jppf.utils

Class JPPFUuid

java.lang.Object

org.jppf.utils.JPPFUuid

All Implemented Interfaces:

Serializable

public class JPPFUuid
extends Object
implements Serializable

Instances of this class serve as unique identifiers for messages sent to and from remote execution services. The identifier is generated as a string with the following elements:

• sender host IP address
• current system time in milliseconds
• a random integer value between 0 and Integer.MAX_VALUE

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String[]	ALPHA_NUM Set of characters used to compose a uuid, including only alphanumeric characters.
static String[]	ALPHABET_SUPERSET Set of characters used to compose a uuid, including more than alphanumeric characters.
static char[]	ALPHABET_SUPERSET_CHAR Set of characters used to compose a uuid, including more than alphanumeric characters.
static String[]	HEXADECIMAL Set of characters used to compose a uuid, including only hexadecimal digits.
static char[]	HEXADECIMAL_CHAR Set of characters used to compose a uuid, including only hexadecimal digits in lower case.
static char[]	HEXADECIMAL_UPPER_CHAR Set of characters used to compose a uuid, including only hexadecimal digits in lower case.

Constructor Summary

Constructors

Constructor and Description
JPPFUuid() Instantiate this JPPFUuid with a generated unique identifier.
JPPFUuid(char[] codes, int length) Instantiate this JPPFUuid with a generated unique identifier.
JPPFUuid(String[] codes, int length) Deprecated. use JPPFUuid.JPPFUuid(char[],int) instead.

Method Summary

Methods

Modifier and Type	Method and Description
static String	normalUUID() Create a UUID in a standard format as described in UUID.toString().
String	toString() Get a string representation of the generated unique identifier.

Methods inherited from class java.lang.Object

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

Field Detail

ALPHABET_SUPERSET

public static final String[] ALPHABET_SUPERSET

Set of characters used to compose a uuid, including more than alphanumeric characters.

ALPHABET_SUPERSET_CHAR

public static final char[] ALPHABET_SUPERSET_CHAR

Set of characters used to compose a uuid, including more than alphanumeric characters.

ALPHA_NUM

public static final String[] ALPHA_NUM

Set of characters used to compose a uuid, including only alphanumeric characters.

HEXADECIMAL

public static final String[] HEXADECIMAL

Set of characters used to compose a uuid, including only hexadecimal digits.

HEXADECIMAL_CHAR

public static final char[] HEXADECIMAL_CHAR

Set of characters used to compose a uuid, including only hexadecimal digits in lower case.

HEXADECIMAL_UPPER_CHAR

public static final char[] HEXADECIMAL_UPPER_CHAR

Set of characters used to compose a uuid, including only hexadecimal digits in lower case.

Constructor Detail

JPPFUuid

public JPPFUuid()

Instantiate this JPPFUuid with a generated unique identifier.

JPPFUuid

public JPPFUuid(String[] codes,
        int length)

Deprecated. use JPPFUuid.JPPFUuid(char[],int) instead.

Instantiate this JPPFUuid with a generated unique identifier.

Parameters:

codes - the set of codes from which to choose randomly to build the uuid.

length - number of codes to use to build the uuid.

JPPFUuid

public JPPFUuid(char[] codes,
        int length)

Instantiate this JPPFUuid with a generated unique identifier.

Parameters:

codes - the set of codes from which to choose randomly to build the uuid.

length - number of codes to use to build the uuid.

Method Detail

toString

public String toString()

Get a string representation of the generated unique identifier.

Overrides:

toString in class Object

Returns:

a string containing the uuid.

See Also:

Object.toString()

normalUUID

public static String normalUUID()

Create a UUID in a standard format as described in UUID.toString().

Returns:

a normalized UUID reprsented as a string.