Class DNSEntry

java.lang.Object
javax.jmdns.impl.DNSEntry
Direct Known Subclasses:
DNSQuestion, DNSRecord
public abstract class DNSEntry extends Object
DNS entry with a name, type, and class. This is the base class for questions and records.

  • Field Details

  • Constructor Details

  • Method Details

    • equals

      public boolean equals(Object obj)
      Overrides:
      equals in class Object

    • isSameEntry

      public boolean isSameEntry(DNSEntry entry)
      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

    • sameSubtype

      public boolean sameSubtype(DNSEntry other)
      Check if two entries have the same subtype.
      Parameters:
      other -
      Returns:
      true if the two entries have are for the same subtype, false otherwise

    • matchRecordClass

      public boolean matchRecordClass(DNSRecordClass recordClass)
      Check if the requested record class match the current record class
      Parameters:
      recordClass -
      Returns:
      true if the two entries have compatible class, false otherwise

    • matchRecordType

      public boolean matchRecordType(DNSRecordType recordType)
      Check if the requested record tyep match the current record type
      Parameters:
      recordType -
      Returns:
      true if the two entries have compatible type, false otherwise

    • getSubtype

      public String getSubtype()
      Returns the subtype of this entry
      Returns:
      subtype of this entry

    • getName

      public String getName()
      Returns the name of this entry
      Returns:
      name of this entry

    • getType

      public String getType()
      Returns:
      the type

    • getKey

      public String getKey()
      Returns the key for this entry. The key is the lower case name.
      Returns:
      key for this entry

    • getRecordType

      public DNSRecordType getRecordType()
      Returns:
      record type

    • getRecordClass

      public DNSRecordClass getRecordClass()
      Returns:
      record class

    • isUnique

      public boolean isUnique()
      Returns:
      true if unique

    • getQualifiedNameMap

      public Map<ServiceInfo.Fields, String> getQualifiedNameMap()

    • 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.

    • 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.

    • isSameRecordClass

      public boolean isSameRecordClass(DNSEntry entry)
      Check that 2 entries are of the same class.
      Parameters:
      entry -
      Returns:
      true is the two class are the same, false otherwise.

    • isSameType

      public boolean isSameType(DNSEntry entry)
      Check that 2 entries are of the same type.
      Parameters:
      entry -
      Returns:
      true is the two type are the same, false otherwise.

    • toByteArray

      protected void toByteArray(DataOutputStream dout) throws IOException
      Parameters:
      dout -
      Throws:
      IOException

    • 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

    • compareTo

      public int compareTo(DNSEntry that)
      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.

    • hashCode

      public int hashCode()
      Overriden, to return a value which is consistent with the value returned by equals(Object).
      Overrides:
      hashCode in class Object

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • toString

      protected void toString(StringBuilder sb)
      Parameters:
      sb -