Package javax.jmdns.impl
Class DNSEntry
java.lang.Object
javax.jmdns.impl.DNSEntry
- Direct Known Subclasses:
DNSQuestion
,DNSRecord
DNS entry with a name, type, and class. This is the base class for questions and records.
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate final DNSRecordClass
private final String
private final String
(package private) final Map
<ServiceInfo.Fields, String> private final DNSRecordType
private final String
private final boolean
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Constructor Summary
ConstructorsConstructorDescriptionDNSEntry
(String name, DNSRecordType type, DNSRecordClass recordClass, boolean unique) Create an entry. -
Method Summary
Modifier and TypeMethodDescriptionint
Does a lexicographic comparison of the byte array representation of this record and that record.boolean
getKey()
Returns the key for this entry.getName()
Returns the name of this entryReturns the subtype of this entrygetType()
int
hashCode()
Overriden, to return a value which is consistent with the value returned by equals(Object).boolean
abstract boolean
isExpired
(long now) Check if the record is expired.boolean
boolean
isSameEntry
(DNSEntry entry) Check if two entries have exactly the same name, type, and class.boolean
isSameRecordClass
(DNSEntry entry) Check that 2 entries are of the same class.boolean
isSameType
(DNSEntry entry) Check that 2 entries are of the same type.boolean
abstract boolean
isStale
(long now) Check if the record is stale, i.e.boolean
isUnique()
boolean
boolean
boolean
matchRecordClass
(DNSRecordClass recordClass) Check if the requested record class match the current record classboolean
matchRecordType
(DNSRecordType recordType) Check if the requested record tyep match the current record typeboolean
sameSubtype
(DNSEntry other) Check if two entries have the same subtype.protected byte[]
Creates a byte array representation of this record.protected void
toByteArray
(DataOutputStream dout) toString()
protected void
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Field Details
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_key
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_name
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_type
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_recordType
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_dnsClass
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_unique
private final boolean _unique -
_qualifiedNameMap
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Constructor Details
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DNSEntry
DNSEntry(String name, DNSRecordType type, DNSRecordClass recordClass, boolean unique) Create an entry.
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Method Details
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equals
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isSameEntry
Check if two entries have exactly the same name, type, and class.- Parameters:
entry
-- Returns:
true
if the two entries have are for the same record,false
otherwise
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sameSubtype
Check if two entries have the same subtype.- Parameters:
other
-- Returns:
true
if the two entries have are for the same subtype,false
otherwise
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matchRecordClass
Check if the requested record class match the current record class- Parameters:
recordClass
-- Returns:
true
if the two entries have compatible class,false
otherwise
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matchRecordType
Check if the requested record tyep match the current record type- Parameters:
recordType
-- Returns:
true
if the two entries have compatible type,false
otherwise
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getSubtype
Returns the subtype of this entry- Returns:
- subtype of this entry
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getName
Returns the name of this entry- Returns:
- name of this entry
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getType
- Returns:
- the type
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getKey
Returns the key for this entry. The key is the lower case name.- Returns:
- key for this entry
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getRecordType
- Returns:
- record type
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getRecordClass
- Returns:
- record class
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isUnique
public boolean isUnique()- Returns:
- true if unique
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getQualifiedNameMap
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isServicesDiscoveryMetaQuery
public boolean isServicesDiscoveryMetaQuery() -
isDomainDiscoveryQuery
public boolean isDomainDiscoveryQuery() -
isReverseLookup
public boolean isReverseLookup() -
isV4ReverseLookup
public boolean isV4ReverseLookup() -
isV6ReverseLookup
public boolean isV6ReverseLookup() -
isStale
public abstract boolean isStale(long now) Check if the record is stale, i.e. it has outlived more than half of its TTL.- Parameters:
now
- update date- Returns:
true
is the record is stale,false
otherwise.
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isExpired
public abstract boolean isExpired(long now) Check if the record is expired.- Parameters:
now
- update date- Returns:
true
is the record is expired,false
otherwise.
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isSameRecordClass
Check that 2 entries are of the same class.- Parameters:
entry
-- Returns:
true
is the two class are the same,false
otherwise.
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isSameType
Check that 2 entries are of the same type.- Parameters:
entry
-- Returns:
true
is the two type are the same,false
otherwise.
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toByteArray
- Parameters:
dout
-- Throws:
IOException
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toByteArray
protected byte[] toByteArray()Creates a byte array representation of this record. This is needed for tie-break tests according to draft-cheshire-dnsext-multicastdns-04.txt chapter 9.2.- Returns:
- byte array representation
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compareTo
Does a lexicographic comparison of the byte array representation of this record and that record. This is needed for tie-break tests according to draft-cheshire-dnsext-multicastdns-04.txt chapter 9.2.- Parameters:
that
-- Returns:
- a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object.
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hashCode
public int hashCode()Overriden, to return a value which is consistent with the value returned by equals(Object). -
toString
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toString
- Parameters:
sb
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