Package org.jgroups.util

Class ExtendedUUID

java.lang.Object

org.jgroups.util.UUID

org.jgroups.util.FlagsUUID

org.jgroups.util.ExtendedUUID

All Implemented Interfaces:

Comparable<Address>, Address, Constructable<UUID>, SizeStreamable, Streamable

Direct Known Subclasses:

SiteUUID

public class ExtendedUUID
extends FlagsUUID

Subclass of UUID accommodating additional data such as a flag and a small hashmap. There may be many instances in memory, and as they are serialized a lot and sent across the wire, I tried to make this as compact as possible. As a consequence, the hashmap can have a max size of 255 and a value can have a max length of 255 bytes.

Since:

3.5

Field Summary

Fields

Modifier and Type	Field	Description
protected byte[][]	keys
protected static Function<ExtendedUUID,String>	print_function
protected byte[][]	values

Fields inherited from class org.jgroups.util.FlagsUUID

flags

Fields inherited from class org.jgroups.util.UUID

leastSigBits, mostSigBits, SIZE

Fields inherited from interface org.jgroups.Address

IP_ADDR, NULL, SITE_MASTER, SITE_UUID, UUID_ADDR

Constructor Summary

Constructors

Modifier	Constructor	Description
	ExtendedUUID()
protected	ExtendedUUID(byte[] data)
	ExtendedUUID(long mostSigBits, long leastSigBits)
	ExtendedUUID(T o)

Method Summary

Modifier and Type	Method	Description
<T extends FlagsUUID> T	addContents(T o)
Supplier<? extends UUID>	create()	Creates an instance of the class implementing this interface
byte[]	get(byte[] key)
byte[]	get(String key)
boolean	keyExists(byte[] key)
boolean	keyExists(String key)
int	length()	The number of non-null keys
String	print()
ExtendedUUID	put(byte[] key, byte[] val)
protected ExtendedUUID	put(int start_index, byte[] key, byte[] val)
ExtendedUUID	put(String key, byte[] val)
static ExtendedUUID	randomUUID()
static ExtendedUUID	randomUUID(String name)
protected void	read(DataInput in)
void	readFrom(DataInput in)	Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed
byte[]	remove(byte[] key)
byte[]	remove(String key)
protected void	resize(int new_length)
int	serializedSize()	The number of bytes required to serialize this instance
static void	setPrintFunction(Function<ExtendedUUID,String> f)
protected int	sizeofHashMap()
String	toString()
protected void	write(DataOutput out)
void	writeTo(DataOutput out)	Write the entire state of the current object (including superclasses) to outstream.

Methods inherited from class org.jgroups.util.FlagsUUID

clearFlag, isFlagSet, setFlag

Methods inherited from class org.jgroups.util.UUID

compareTo, compareTo, copy, digits, equals, fromString, generateRandomBytes, getLeastSignificantBits, getMostSignificantBits, hashCode, printName, toStringLong

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.jgroups.Address

isMulticast, isSiteAddress, isSiteMaster

Field Details

keys

protected byte[][] keys

values

protected byte[][] values

print_function

protected static Function<ExtendedUUID,String> print_function

Constructor Details

ExtendedUUID

public ExtendedUUID()

ExtendedUUID

protected ExtendedUUID(byte[] data)

ExtendedUUID

public ExtendedUUID(long mostSigBits,
 long leastSigBits)

ExtendedUUID

public ExtendedUUID(T o)

Method Details

create

public Supplier<? extends UUID> create()

Description copied from interface: Constructable

Creates an instance of the class implementing this interface

Specified by:

create in interface Constructable<UUID>

Overrides:

create in class FlagsUUID

setPrintFunction

public static void setPrintFunction(Function<ExtendedUUID,String> f)

randomUUID

public static ExtendedUUID randomUUID()

randomUUID

public static ExtendedUUID randomUUID(String name)

get

public byte[] get(byte[] key)

get

public byte[] get(String key)

put

public ExtendedUUID put(byte[] key,
 byte[] val)

put

protected ExtendedUUID put(int start_index,
 byte[] key,
 byte[] val)

put

public ExtendedUUID put(String key,
 byte[] val)

remove

public byte[] remove(byte[] key)

remove

public byte[] remove(String key)

keyExists

public boolean keyExists(byte[] key)

keyExists

public boolean keyExists(String key)

addContents

public <T extends FlagsUUID> T addContents(T o)

Overrides:

addContents in class FlagsUUID

writeTo

public void writeTo(DataOutput out)
             throws IOException

Description copied from interface: Streamable

Write the entire state of the current object (including superclasses) to outstream. Note that the output stream must not be closed

Specified by:

writeTo in interface Streamable

Overrides:

writeTo in class FlagsUUID

Throws:

IOException

readFrom

public void readFrom(DataInput in)
              throws IOException

Description copied from interface: Streamable

Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed

Specified by:

readFrom in interface Streamable

Overrides:

readFrom in class FlagsUUID

Throws:

IOException

serializedSize

public int serializedSize()

The number of bytes required to serialize this instance

Specified by:

serializedSize in interface SizeStreamable

Overrides:

serializedSize in class FlagsUUID

length

public int length()

The number of non-null keys

toString

public String toString()

Overrides:

toString in class FlagsUUID

print

public String print()

write

protected void write(DataOutput out)
              throws IOException

Throws:

IOException

read

protected void read(DataInput in)
             throws IOException

Throws:

IOException

sizeofHashMap

protected int sizeofHashMap()

resize

protected void resize(int new_length)