Package 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().

Since:

3.4

Nested Class Summary

Nested Classes

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

Field Summary

Fields

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

Method Summary

Modifier and Type	Method	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.
CompletionStage<LookupResult>	lookupAsync(Record question)	Make an asynchronous lookup with the provided Record.

Methods inherited from class java.lang.Object

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

Field Details

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 Details

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(Record question)

Make an asynchronous lookup with the provided Record.

Parameters:

question - the name, type and DClass to look up.

Returns:

A CompletionStage what will yield the eventual lookup result.

Since:

3.6

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.