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io.netty.resolver.dns

pack-priv final Class PreferredAddressTypeComparator

extends Object
implements Comparator<InetAddress>
Class Inheritance
All Implemented Interfaces
java.util.Comparator
Imports
io.netty.channel.socket.InternetProtocolFamily, java.net.Inet4Address, .Inet6Address, .InetAddress, java.util.Comparator

Field Summary

Modifier and TypeField and Description
private static final PreferredAddressTypeComparator
IPv4

private static final PreferredAddressTypeComparator
IPv6

private final Class<? extends InetAddress>
preferredAddressType

Constructor Summary

AccessConstructor and Description
private
PreferredAddressTypeComparator(Class<? extends InetAddress> preferredAddressType)

Method Summary

Modifier and TypeMethod and Description
pack-priv static PreferredAddressTypeComparator
comparator(InternetProtocolFamily family)

public int
compare(InetAddress
the first object to be compared.
o1, InetAddress
the second object to be compared.
o2)

Implements java.util.Comparator.compare.

Compares its two arguments for order.
Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

IPv4back to summary
private static final PreferredAddressTypeComparator IPv4
IPv6back to summary
private static final PreferredAddressTypeComparator IPv6
preferredAddressTypeback to summary
private final Class<? extends InetAddress> preferredAddressType

Constructor Detail

PreferredAddressTypeComparatorback to summary
private PreferredAddressTypeComparator(Class<? extends InetAddress> preferredAddressType)

Method Detail

comparatorback to summary
pack-priv static PreferredAddressTypeComparator comparator(InternetProtocolFamily family)
compareback to summary
public int compare(InetAddress o1, InetAddress o2)

Implements java.util.Comparator.compare.

Doc from java.util.Comparator.compare.

Compares its two arguments for order. Returns a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

The implementor must ensure that signum(compare(x, y)) == -signum(compare(y, x)) for all x and y. (This implies that compare(x, y) must throw an exception if and only if compare(y, x) throws an exception.)

The implementor must also ensure that the relation is transitive: ((compare(x, y)>0) && (compare(y, z)>0)) implies compare(x, z)>0.

Finally, the implementor must ensure that compare(x, y)==0 implies that signum(compare(x, z))==signum(compare(y, z)) for all z.

Parameters
o1:InetAddress

the first object to be compared.

o2:InetAddress

the second object to be compared.

Returns:int

a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

Annotations
@Override