com.googlecode.ipv6

Class IPv6AddressRange

java.lang.Object

com.googlecode.ipv6.IPv6AddressRange

All Implemented Interfaces:

Comparable<IPv6AddressRange>, Iterable<IPv6Address>

Direct Known Subclasses:

IPv6Network

public class IPv6AddressRange
extends Object
implements Comparable<IPv6AddressRange>, Iterable<IPv6Address>

Immutable representation of a continuous range of IPv6 addresses (bounds included).

Author:

Jan Van Besien

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTo(IPv6AddressRange that) The natural order of IPv6AddressRanges orders them on increasing first addresses, and on increasing last address if the first address would be equal.
boolean	contains(IPv6Address address)
boolean	contains(IPv6AddressRange range)
boolean	equals(Object o)
IPv6AddressRange	extend(IPv6Address address) Extend the range just enough at its head or tail such that the given address is included.
static IPv6AddressRange	fromFirstAndLast(IPv6Address first, IPv6Address last)
IPv6Address	getFirst()
IPv6Address	getLast()
int	hashCode()
Iterator<IPv6Address>	iterator()
boolean	overlaps(IPv6AddressRange range)
List<IPv6AddressRange>	remove(IPv6Address address) Remove an address from the range, resulting in one, none or two new ranges.
List<IPv6AddressRange>	remove(IPv6Network network) Remove a network from the range, resulting in one, none or two new ranges.
BigInteger	size()
String	toLongString()
String	toString()
Iterator<IPv6Network>	toSubnets() Deaggregate a range of IPv6 addresses (which is not necessarily aligned with a single IPv6 network) into a minimal set of non overlapping consecutive subnets.

Methods inherited from class java.lang.Object

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

Method Detail

fromFirstAndLast

public static IPv6AddressRange fromFirstAndLast(IPv6Address first,
                                IPv6Address last)

contains

public boolean contains(IPv6Address address)

contains

public boolean contains(IPv6AddressRange range)

overlaps

public boolean overlaps(IPv6AddressRange range)

iterator

public Iterator<IPv6Address> iterator()

Specified by:

iterator in interface Iterable<IPv6Address>

Returns:

an iterator which iterates all addresses in this range, in order.

size

public BigInteger size()

Returns:

number of addresses in the range

toSubnets

public Iterator<IPv6Network> toSubnets()

Deaggregate a range of IPv6 addresses (which is not necessarily aligned with a single IPv6 network) into a minimal set of non overlapping consecutive subnets.

Returns:

iterator of IPv6 networks that all together define the minimal set of subnets by which the range can be represented.

remove

public List<IPv6AddressRange> remove(IPv6Address address)

Remove an address from the range, resulting in one, none or two new ranges. If an address outside the range is removed, this has no effect. If the first or last address is removed, a single new range is returned (potentially empty if the range only contained a single address). If an address somewhere else in the range is removed, two new ranges are returned.

Parameters:

address - adddress to remove from the range

Returns:

list of resulting ranges

extend

public IPv6AddressRange extend(IPv6Address address)

Extend the range just enough at its head or tail such that the given address is included.

Parameters:

address - address to extend the range to

Returns:

new (bigger) range

remove

public List<IPv6AddressRange> remove(IPv6Network network)

Remove a network from the range, resulting in one, none or two new ranges. If a network outside (or partially outside) the range is removed, this has no effect. If the network which is removed is aligned with the beginning or end of the range, a single new ranges is returned (potentially empty if the range was equal to the network which is removed from it). If a network somewhere else in the range is removed, two new ranges are returned.

Parameters:

network - network to remove from the range

Returns:

list of resulting ranges

toString

public String toString()

Overrides:

toString in class Object

toLongString

public String toLongString()

Returns:

like toString but without using shorthand notations for addresses

compareTo

public int compareTo(IPv6AddressRange that)

The natural order of IPv6AddressRanges orders them on increasing first addresses, and on increasing last address if the first address would be equal.

Note that the natural order does thus not compare sizes of ranges.

Specified by:

compareTo in interface Comparable<IPv6AddressRange>

Parameters:

that - range to compare with

Returns:

negative, zero or positive depending on whether this is smaller, equal or greater than that

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getFirst

public IPv6Address getFirst()

getLast

public IPv6Address getLast()