com.hp.util.ip

Class U32Id

java.lang.Object

com.hp.util.cache.CacheableDataType

com.hp.util.ip.UnsignedId

com.hp.util.ip.UnsignedLongBasedId

com.hp.util.ip.U32Id

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

BigPortNumber, BufferId, GroupId, MeterId, QueueId

public abstract class U32Id
extends UnsignedLongBasedId

A base class for unsigned 32-bit identifiers.

Author:

Simon Hunt

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	E_BYTES_BAD_LEN Error message when byte array is incorrect length.
static int	LENGTH_IN_BYTES Length of the identifier when encoded as a byte array.
static long	MAX_VALUE Highest valid value.

Fields inherited from class com.hp.util.ip.UnsignedLongBasedId

id

Fields inherited from class com.hp.util.ip.UnsignedId

E_BAD, E_NULL_BYTES, E_NULL_STR, E_OOR, MIN_VALUE

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	U32Id(long id) Constructs the id.

Method Summary

Modifier and Type	Method and Description
protected static void	rangeCheck(long value) Ensures that the given value is within range.
byte[]	toByteArray() Returns this id as a 4-byte array.

Methods inherited from class com.hp.util.ip.UnsignedLongBasedId

equals, hashCode, toLong, toString

Methods inherited from class com.hp.util.ip.UnsignedId

parseIntStr, parseLongStr

Methods inherited from class com.hp.util.cache.CacheableDataType

getRefQ, keyFromBytes

Methods inherited from class java.lang.Object

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

Field Detail

MAX_VALUE

public static final long MAX_VALUE

Highest valid value.

See Also:

Constant Field Values

LENGTH_IN_BYTES

public static final int LENGTH_IN_BYTES

Length of the identifier when encoded as a byte array.

See Also:

Constant Field Values

E_BYTES_BAD_LEN

public static final String E_BYTES_BAD_LEN

Error message when byte array is incorrect length.

See Also:

Constant Field Values

Constructor Detail

U32Id

protected U32Id(long id)

Constructs the id.

Parameters:

id - the id value

Method Detail

toByteArray

public byte[] toByteArray()

Returns this id as a 4-byte array. Note that the bytes are in Network order; i.e. the most significant byte is at index zero.

Returns:

the id as a byte array

rangeCheck

protected static void rangeCheck(long value)

Ensures that the given value is within range. If it is, the method returns silently; if not, an exception is thrown.

Parameters:

value - the value to check

Throws:

IllegalArgumentException - if the value is out of range