javax.jmdns.impl
Class DNSRecord

java.lang.Object
  javax.jmdns.impl.DNSEntry
      javax.jmdns.impl.DNSRecord

Direct Known Subclasses:

DNSRecord.Address, DNSRecord.HostInformation, DNSRecord.Pointer, DNSRecord.Service, DNSRecord.Text

public abstract class DNSRecord
extends DNSEntry

DNS record

Author:

Arthur van Hoff, Rick Blair, Werner Randelshofer, Pierre Frisch

Nested Class Summary

static class	DNSRecord.Address Address record.
static class	DNSRecord.HostInformation
static class	DNSRecord.IPv4Address
static class	DNSRecord.IPv6Address
static class	DNSRecord.Pointer Pointer record.
static class	DNSRecord.Service Service record.
static class	DNSRecord.Text

Field Summary

static byte[]

EMPTY_TXT

Method Summary

boolean	equals(Object other)
InetAddress	getRecordSource()
abstract ServiceEvent	getServiceEvent(JmDNSImpl dns) Creates and return a service event for this record.
ServiceInfo	getServiceInfo() Return a service information associated with that record if appropriate.
abstract ServiceInfo	getServiceInfo(boolean persistent) Return a service information associated with that record if appropriate.
int	getTTL()
boolean	isExpired(long now) Check if the record is expired.
abstract boolean	isSingleValued() Determine if a record can have multiple values in the cache.
boolean	isStale(long now) Check if the record is stale, i.e.
void	setRecordSource(InetAddress source)
void	setTTL(int ttl)
protected void	toString(StringBuilder aLog)

Methods inherited from class javax.jmdns.impl.DNSEntry

compareTo, getKey, getName, getQualifiedNameMap, getRecordClass, getRecordType, getSubtype, getType, hashCode, isDomainDiscoveryQuery, isReverseLookup, isSameEntry, isSameRecordClass, isSameType, isServicesDiscoveryMetaQuery, isUnique, isV4ReverseLookup, isV6ReverseLookup, sameSubtype, toByteArray, toByteArray, toString

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_TXT

public static final byte[] EMPTY_TXT

Method Detail

equals

public boolean equals(Object other)

Overrides:

equals in class DNSEntry

isExpired

public boolean isExpired(long now)

Description copied from class: DNSEntry

Check if the record is expired.

Specified by:

isExpired in class DNSEntry

Parameters:

now - update date

Returns:

true is the record is expired, false otherwise.

isStale

public boolean isStale(long now)

Description copied from class: DNSEntry

Check if the record is stale, i.e. it has outlived more than half of its TTL.

Specified by:

isStale in class DNSEntry

Parameters:

now - update date

Returns:

true is the record is stale, false otherwise.

isSingleValued

public abstract boolean isSingleValued()

Determine if a record can have multiple values in the cache.

Returns:

false if this record can have multiple values in the cache, true otherwise.

getServiceInfo

public ServiceInfo getServiceInfo()

Return a service information associated with that record if appropriate.

Returns:

service information

getServiceInfo

public abstract ServiceInfo getServiceInfo(boolean persistent)

Return a service information associated with that record if appropriate.

Parameters:

persistent - if true ServiceListener.resolveService will be called whenever new new information is received.

Returns:

service information

getServiceEvent

public abstract ServiceEvent getServiceEvent(JmDNSImpl dns)

Creates and return a service event for this record.

Parameters:

dns - DNS serviced by this event

Returns:

service event

setRecordSource

public void setRecordSource(InetAddress source)

getRecordSource

public InetAddress getRecordSource()

toString

protected void toString(StringBuilder aLog)

Overrides:

toString in class DNSEntry

setTTL

public void setTTL(int ttl)

getTTL

public int getTTL()