org.xbill.DNS
Class ReverseMap

java.lang.Object
  org.xbill.DNS.ReverseMap

public final class ReverseMap
extends Object

A set functions designed to deal with DNS names used in reverse mappings. For the IPv4 address a.b.c.d, the reverse map name is d.c.b.a.in-addr.arpa. For an IPv6 address, the reverse map name is ...ip6.arpa.

Author:

Brian Wellington

Method Summary

static Name	fromAddress(byte[] addr) Creates a reverse map name corresponding to an address contained in an array of 4 bytes (for an IPv4 address) or 16 bytes (for an IPv6 address).
static Name	fromAddress(InetAddress addr) Creates a reverse map name corresponding to an address contained in an InetAddress.
static Name	fromAddress(int[] addr) Creates a reverse map name corresponding to an address contained in an array of 4 integers between 0 and 255 (for an IPv4 address) or 16 integers between 0 and 255 (for an IPv6 address).
static Name	fromAddress(String addr) Creates a reverse map name corresponding to an address contained in a String.
static Name	fromAddress(String addr, int family) Creates a reverse map name corresponding to an address contained in a String.

Methods inherited from class java.lang.Object

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

Method Detail

fromAddress

public static Name fromAddress(byte[] addr)

Creates a reverse map name corresponding to an address contained in an array of 4 bytes (for an IPv4 address) or 16 bytes (for an IPv6 address).

Parameters:

addr - The address from which to build a name.

Returns:

The name corresponding to the address in the reverse map.

fromAddress

public static Name fromAddress(int[] addr)

Creates a reverse map name corresponding to an address contained in an array of 4 integers between 0 and 255 (for an IPv4 address) or 16 integers between 0 and 255 (for an IPv6 address).

Parameters:

addr - The address from which to build a name.

Returns:

The name corresponding to the address in the reverse map.

fromAddress

public static Name fromAddress(InetAddress addr)

Creates a reverse map name corresponding to an address contained in an InetAddress.

Parameters:

addr - The address from which to build a name.

Returns:

The name corresponding to the address in the reverse map.

fromAddress

public static Name fromAddress(String addr,
                               int family)
                        throws UnknownHostException

Creates a reverse map name corresponding to an address contained in a String.

Parameters:

addr - The address from which to build a name.

Returns:

The name corresponding to the address in the reverse map.

Throws:

UnknownHostException - The string does not contain a valid address.

fromAddress

public static Name fromAddress(String addr)
                        throws UnknownHostException

Creates a reverse map name corresponding to an address contained in a String.

Parameters:

addr - The address from which to build a name.

Returns:

The name corresponding to the address in the reverse map.

Throws:

UnknownHostException - The string does not contain a valid address.