A packed 48 bit EUI-48 identifier, formerly known as MAC-48 or simply network device MAC address (Media Access Control address). More...

Collaboration diagram for org.jau.net.EUI48:

Public Member Functions
	EUI48 (final String str) throws IllegalArgumentException
	Construct instance via given string representation.

	EUI48 (final byte stream[], final int pos, final ByteOrder byte_order)
	Copy address bytes from given source and byte order, while converting them to `ByteOrder#nativeOrder()`.

	EUI48 (final byte address[], final ByteOrder byte_order)
	Copy address bytes from given source and byte order, while converting them to `ByteOrder#nativeOrder()`.

	EUI48 ()
	Construct empty unset instance.

final boolean	equals (final Object obj)

final int	hashCode ()

void	clearHash ()
	Method clears the cached hash value.

void	clear ()
	Method clears the underlying byte array `b` and cached hash value.

final void	put (final byte[] sink, final int sink_pos, final ByteOrder byte_order)
	Method transfers all bytes representing this instance into the given destination array at the given position and in the given byte order.

int	indexOf (final EUI48Sub needle, final ByteOrder byte_order)
	Finds the index of given EUI48Sub needle within this instance haystack in the given byte order.

boolean	contains (final EUI48Sub needle)
	Returns true, if given EUI48Sub is contained in here.

final String	toString ()

Static Public Member Functions
static boolean	scanEUI48 (final String str, final EUI48 dest, final StringBuilder errmsg)
	Fills given EUI48 instance via given string representation.

Public Attributes
final byte	b []
	The 6 byte EUI48 address.

Static Public Attributes
static final EUI48	ANY_DEVICE = new EUI48( new byte[] { (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00 }, ByteOrder.LITTLE_ENDIAN )
	EUI48 MAC address matching any device, i.e.

static final EUI48	ALL_DEVICE = new EUI48( new byte[] { (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff }, ByteOrder.LITTLE_ENDIAN )
	EUI48 MAC address matching all device, i.e.

static final EUI48	LOCAL_DEVICE = new EUI48( new byte[] { (byte)0x00, (byte)0x00, (byte)0x00, (byte)0xff, (byte)0xff, (byte)0xff }, ByteOrder.LITTLE_ENDIAN )
	EUI48 MAC address matching local device, i.e.

Detailed Description

A packed 48 bit EUI-48 identifier, formerly known as MAC-48 or simply network device MAC address (Media Access Control address).

Stores value in ByteOrder#nativeOrder() byte order.

Implementation caches the hash value hashCode(), hence users shall take special care when mutating the underlying data b, read its API notes.

Definition at line 42 of file EUI48.java.

Constructor & Destructor Documentation

◆ EUI48() [1/4]

org.jau.net.EUI48.EUI48 ( final String str ) throws IllegalArgumentException

Construct instance via given string representation.

Implementation is consistent with toString().

Parameters

str	a string of exactly 17 characters representing 6 bytes as hexadecimal numbers separated via colon `"01:02:03:0A:0B:0C"`.

See also: #scanEUI48(String, byte[], StringBuilder); toString()

Exceptions

IllegalArgumentException if given string doesn't comply with EUI48

Definition at line 111 of file EUI48.java.

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◆ EUI48() [2/4]

org.jau.net.EUI48.EUI48	(	final byte	stream[],
		final int	pos,
		final ByteOrder	byte_order )

Copy address bytes from given source and byte order, while converting them to ByteOrder#nativeOrder().

Parameters

stream	address bytes
pos	position in stream at address
byte_order	`ByteOrder#LITTLE_ENDIAN` or `ByteOrder#BIG_ENDIAN` byte order of given address bytes, one may pass `ByteOrder#nativeOrder()`.

Definition at line 127 of file EUI48.java.

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◆ EUI48() [3/4]

org.jau.net.EUI48.EUI48	(	final byte	address[],
		final ByteOrder	byte_order )

Copy address bytes from given source and byte order, while converting them to ByteOrder#nativeOrder().

Parameters

address	address bytes
byte_order	`ByteOrder#LITTLE_ENDIAN` or `ByteOrder#BIG_ENDIAN` byte order of given address bytes, one may pass `ByteOrder#nativeOrder()`.

Definition at line 146 of file EUI48.java.

◆ EUI48() [4/4]

org.jau.net.EUI48.EUI48 ( )

Construct empty unset instance.

Definition at line 151 of file EUI48.java.

Member Function Documentation

◆ clear()

void org.jau.net.EUI48.clear ( )

Method clears the underlying byte array b and cached hash value.

See also: clearHash()

Definition at line 215 of file EUI48.java.

◆ clearHash()

void org.jau.net.EUI48.clearHash ( )

Method clears the cached hash value.

See also: clear()

Definition at line 209 of file EUI48.java.

◆ contains()

boolean org.jau.net.EUI48.contains ( final EUI48Sub needle )

Returns true, if given EUI48Sub is contained in here.

If the sub is zero, true is returned.

Definition at line 266 of file EUI48.java.

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◆ equals()

final boolean org.jau.net.EUI48.equals ( final Object obj )

Definition at line 156 of file EUI48.java.

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◆ hashCode()

final int org.jau.net.EUI48.hashCode ( )

Implementation uses a lock-free volatile cache.

See also: clearHash()

Definition at line 180 of file EUI48.java.

◆ indexOf()

int org.jau.net.EUI48.indexOf	(	final EUI48Sub	needle,
		final ByteOrder	byte_order )

Finds the index of given EUI48Sub needle within this instance haystack in the given byte order.

The returned index will be adjusted for the desired byte order.

ByteOrder#BIG_ENDIAN will return index 0 for the leading byte like the toString() representation from left (MSB) to right (LSB).
ByteOrder#LITTLE_ENDIAN will return index 5 for the leading byte

Parameters

needle
byte_order	byte order will adjust the returned index, `ByteOrder#BIG_ENDIAN` is equivalent with `toString()` representation from left (MSB) to right (LSB).

Returns: index of first element of needle within this instance haystack or -1 if not found. If the needle length is zero, 0 (found) is returned.

See also: #indexOf(byte[], int, byte[], int, ByteOrder)

Definition at line 256 of file EUI48.java.

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◆ put()

final void org.jau.net.EUI48.put	(	final byte[]	sink,
		final int	sink_pos,
		final ByteOrder	byte_order )

Method transfers all bytes representing this instance into the given destination array at the given position and in the given byte order.

Implementation is consistent with EUI48(byte[], int, ByteOrder).

Parameters

sink	the destination array
sink_pos	starting position in the destination array
byte_order	destination buffer byte order

Exceptions

IllegalArgumentException

See also: EUI48(byte[], int, ByteOrder)

Definition at line 233 of file EUI48.java.

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◆ scanEUI48()

static boolean org.jau.net.EUI48.scanEUI48	(	final String	str,
		final EUI48	dest,
		final StringBuilder	errmsg )

static

Fills given EUI48 instance via given string representation.

Implementation is consistent with toString().

Parameters

str	a string of exactly 17 characters representing 6 bytes as hexadecimal numbers separated via colon `"01:02:03:0A:0B:0C"`.
dest	EUI48 to set its value
errmsg	error parsing message if returning false

Returns: true if successful, otherwise false

See also: EUI48(String); toString()

Definition at line 79 of file EUI48.java.

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◆ toString()

final String org.jau.net.EUI48.toString ( )

Returns the EUI48 string representation, exactly 17 characters representing 6 bytes as upper case hexadecimal numbers separated via colon "01:02:03:0A:0B:0C".

See also: EUI48(String)

Definition at line 279 of file EUI48.java.

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Member Data Documentation

◆ ALL_DEVICE

final EUI48 org.jau.net.EUI48.ALL_DEVICE = new EUI48( new byte[] { (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff }, ByteOrder.LITTLE_ENDIAN )

static

EUI48 MAC address matching all device, i.e.

'ff:ff:ff:ff:ff:ff'.

Definition at line 46 of file EUI48.java.

◆ ANY_DEVICE

final EUI48 org.jau.net.EUI48.ANY_DEVICE = new EUI48( new byte[] { (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00 }, ByteOrder.LITTLE_ENDIAN )

static

EUI48 MAC address matching any device, i.e.

'0:0:0:0:0:0'.

Definition at line 44 of file EUI48.java.

◆ b

final byte org.jau.net.EUI48.b[]

The 6 byte EUI48 address.

If modifying, it is the user's responsibility to avoid data races.
Further, call clearHash() after mutation is complete.

Definition at line 57 of file EUI48.java.

◆ LOCAL_DEVICE

final EUI48 org.jau.net.EUI48.LOCAL_DEVICE = new EUI48( new byte[] { (byte)0x00, (byte)0x00, (byte)0x00, (byte)0xff, (byte)0xff, (byte)0xff }, ByteOrder.LITTLE_ENDIAN )

static

EUI48 MAC address matching local device, i.e.

'0:0:0:ff:ff:ff'.

Definition at line 48 of file EUI48.java.

The documentation for this class was generated from the following file:

java_net/org/jau/net/EUI48.java

Public Member Functions

Static Public Member Functions

Public Attributes

Static Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ EUI48() [1/4]

◆ EUI48() [2/4]

◆ EUI48() [3/4]

◆ EUI48() [4/4]

Member Function Documentation

◆ clear()

◆ clearHash()

◆ contains()

◆ equals()

◆ hashCode()

◆ indexOf()

◆ put()

◆ scanEUI48()

◆ toString()

Member Data Documentation

◆ ALL_DEVICE

◆ ANY_DEVICE

◆ b

◆ LOCAL_DEVICE