org.xbill.DNS.lookup

Class LookupSession

java.lang.Object

org.xbill.DNS.lookup.LookupSession

public class LookupSession
extends Object

LookupSession provides facilities to make DNS Queries. A LookupSession is intended to be long lived, and it's behaviour can be configured using the properties of the LookupSession.LookupSessionBuilder instance returned by builder().

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LookupSession.LookupSessionBuilder A builder for LookupSession instances.

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_MAX_ITERATIONS
static int	DEFAULT_NDOTS

Method Summary

Modifier and Type	Method and Description
static LookupSession.LookupSessionBuilder	builder() Returns an empty LookupSession.LookupSessionBuilder instance.
static LookupSession.LookupSessionBuilder	defaultBuilder() Returns a LookupSession.LookupSessionBuilder instance initialized with defaults.
CompletionStage<LookupResult>	lookupAsync(Name name, int type) Make an asynchronous lookup of the provided name using the default DClass.IN.
CompletionStage<LookupResult>	lookupAsync(Name name, int type, int dclass) Make an asynchronous lookup of the provided name.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_MAX_ITERATIONS

public static final int DEFAULT_MAX_ITERATIONS

See Also:

Constant Field Values

DEFAULT_NDOTS

public static final int DEFAULT_NDOTS

See Also:

Constant Field Values

Method Detail

builder

public static LookupSession.LookupSessionBuilder builder()

Returns an empty LookupSession.LookupSessionBuilder instance. See defaultBuilder() for a builder initialized with defaults.

defaultBuilder

public static LookupSession.LookupSessionBuilder defaultBuilder()

Returns a LookupSession.LookupSessionBuilder instance initialized with defaults.

• Resolver: an ExtendedResolver initialized with the system's default DNS servers as determined by ResolverConfig.
• ndots: as determined by ResolverConfig.
• Cache: A cache for the IN class is installed.
• Hosts: The local host database file is used.

lookupAsync

public CompletionStage<LookupResult> lookupAsync(Name name,
                                                 int type)

Make an asynchronous lookup of the provided name using the default DClass.IN.

Parameters:

name - the name to look up.

type - the type to look up, values should correspond to constants in Type.

Returns:

A CompletionStage what will yield the eventual lookup result.

lookupAsync

public CompletionStage<LookupResult> lookupAsync(Name name,
                                                 int type,
                                                 int dclass)

Make an asynchronous lookup of the provided name.

Parameters:

name - the name to look up.

type - the type to look up, values should correspond to constants in Type.

dclass - the class to look up, values should correspond to constants in DClass.

Returns:

A CompletionStage what will yield the eventual lookup result.