Package org.minidns.record
Class Record<D extends Data>
- java.lang.Object
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- org.minidns.record.Record<D>
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
Record.CLASS
The symbolic class of a DNS record (usuallyRecord.CLASS.IN
for Internet).static class
Record.TYPE
The resource record type.
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Field Summary
Fields Modifier and Type Field Description Record.CLASS
clazz
The record class (usually CLASS.IN).int
clazzValue
The value of the class field of a RR.DnsName
name
The generic name of this record.D
payloadData
The payload object of this record.long
ttl
The ttl of this record.Record.TYPE
type
The type (and payload type) of this record.boolean
unicastQuery
MDNS defines the highest bit of the class as the unicast query bit.
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Constructor Summary
Constructors Constructor Description Record(String name, Record.TYPE type, int clazzValue, long ttl, D payloadData)
Record(String name, Record.TYPE type, Record.CLASS clazz, long ttl, D payloadData, boolean unicastQuery)
Record(DnsName name, Record.TYPE type, int clazzValue, long ttl, D payloadData)
Record(DnsName name, Record.TYPE type, Record.CLASS clazz, long ttl, D payloadData, boolean unicastQuery)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description <E extends Data>
Record<E>as(Class<E> dataClass)
Return the record as record with the givenData
class.boolean
equals(Object other)
static <E extends Data>
List<Record<E>>filter(Class<E> dataClass, Collection<Record<? extends Data>> input)
static <E extends Data>
voidfilter(Collection<Record<E>> result, Class<E> dataClass, Collection<Record<? extends Data>> input)
D
getPayload()
The payload data, usually a subclass of data (A, AAAA, CNAME, ...).Question
getQuestion()
Get the question asking for this resource record.DnsMessage.Builder
getQuestionMessage()
long
getTtl()
Retrieve the record ttl.int
hashCode()
<E extends Data>
Record<E>ifPossibleAs(Class<E> dataClass)
Return the record if possible as record with the givenData
class.boolean
isAnswer(Question q)
Check if this record answers a given query.boolean
isUnicastQuery()
See if this query/response was a unicast query (highest class bit set).static Record<Data>
parse(DataInputStream dis, byte[] data)
Parse a given record based on the full message data and the current stream position.byte[]
toByteArray()
void
toOutputStream(OutputStream outputStream)
String
toString()
Retrieve a textual representation of this resource record.
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Field Detail
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type
public final Record.TYPE type
The type (and payload type) of this record.
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clazz
public final Record.CLASS clazz
The record class (usually CLASS.IN).
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clazzValue
public final int clazzValue
The value of the class field of a RR. According to RFC 2671 (OPT RR) this is not necessarily representable using clazz field and unicastQuery bit
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ttl
public final long ttl
The ttl of this record.
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payloadData
public final D extends Data payloadData
The payload object of this record.
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unicastQuery
public final boolean unicastQuery
MDNS defines the highest bit of the class as the unicast query bit.
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Constructor Detail
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Record
public Record(DnsName name, Record.TYPE type, Record.CLASS clazz, long ttl, D payloadData, boolean unicastQuery)
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Record
public Record(String name, Record.TYPE type, Record.CLASS clazz, long ttl, D payloadData, boolean unicastQuery)
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Record
public Record(String name, Record.TYPE type, int clazzValue, long ttl, D payloadData)
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Record
public Record(DnsName name, Record.TYPE type, int clazzValue, long ttl, D payloadData)
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Method Detail
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parse
public static Record<Data> parse(DataInputStream dis, byte[] data) throws IOException
Parse a given record based on the full message data and the current stream position.- Parameters:
dis
- The DataInputStream positioned at the first record byte.data
- The full message data.- Returns:
- the record which was parsed.
- Throws:
IOException
- In case of malformed replies.
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toOutputStream
public void toOutputStream(OutputStream outputStream) throws IOException
- Throws:
IOException
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toByteArray
public byte[] toByteArray()
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isAnswer
public boolean isAnswer(Question q)
Check if this record answers a given query.- Parameters:
q
- The query.- Returns:
- True if this record is a valid answer.
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isUnicastQuery
public boolean isUnicastQuery()
See if this query/response was a unicast query (highest class bit set).- Returns:
- True if it is a unicast query/response record.
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getPayload
public D getPayload()
The payload data, usually a subclass of data (A, AAAA, CNAME, ...).- Returns:
- The payload data.
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getTtl
public long getTtl()
Retrieve the record ttl.- Returns:
- The record ttl.
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getQuestion
public Question getQuestion()
Get the question asking for this resource record. This will returnnull
if the record is not retrievable, i.e.Record.TYPE.OPT
.- Returns:
- the question for this resource record or
null
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getQuestionMessage
public DnsMessage.Builder getQuestionMessage()
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ifPossibleAs
public <E extends Data> Record<E> ifPossibleAs(Class<E> dataClass)
Return the record if possible as record with the givenData
class. If the record does not hold payload of the given data class type, thennull
will be returned.
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as
public <E extends Data> Record<E> as(Class<E> dataClass)
Return the record as record with the givenData
class. If the record does not hold payload of the given data class type, then aIllegalArgumentException
will be thrown.- Type Parameters:
E
- a subtype ofData
.- Parameters:
dataClass
- a class of theData
type.- Returns:
- the record with a specialized payload type.
- See Also:
ifPossibleAs(Class)
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filter
public static <E extends Data> void filter(Collection<Record<E>> result, Class<E> dataClass, Collection<Record<? extends Data>> input)
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