Class MkMaxLeafEntry

  • All Implemented Interfaces:
    LeafEntry, MkMaxEntry, MTreeEntry, java.io.Externalizable, java.io.Serializable

    class MkMaxLeafEntry
    extends MTreeLeafEntry
    implements MkMaxEntry
    Represents an entry in a leaf node of an MkMaxTree. Additionally to an MTreeLeafEntry an MkMaxLeafEntry holds the k-nearest neighbor distance of the underlying data object.
    Since:
    0.1
    Author:
    Elke Achtert
    • Field Detail

      • serialVersionUID

        private static final long serialVersionUID
        Serial version number
        See Also:
        Constant Field Values
      • knnDistance

        private double knnDistance
        The k-nearest neighbor distance of the underlying data object.
    • Constructor Detail

      • MkMaxLeafEntry

        public MkMaxLeafEntry()
        Empty constructor for serialization purposes.
      • MkMaxLeafEntry

        public MkMaxLeafEntry​(DBID objectID,
                              double parentDistance,
                              double knnDistance)
        Constructor.
        Parameters:
        objectID - the id of the underlying data object
        parentDistance - the distance from the underlying data object to its parent's routing object
        knnDistance - the knn distance of the underlying data object
    • Method Detail

      • getKnnDistance

        public double getKnnDistance()
        Description copied from interface: MkMaxEntry
        Returns the knn distance of the entry.
        Specified by:
        getKnnDistance in interface MkMaxEntry
        Returns:
        the knn distance of the entry
      • setKnnDistance

        public void setKnnDistance​(double knnDistance)
        Description copied from interface: MkMaxEntry
        Sets the knn distance of the entry.
        Specified by:
        setKnnDistance in interface MkMaxEntry
        Parameters:
        knnDistance - the knn distance to be set
      • writeExternal

        public void writeExternal​(java.io.ObjectOutput out)
                           throws java.io.IOException
        Calls the super method and writes the knn distance of this entry to the specified stream.
        Specified by:
        writeExternal in interface java.io.Externalizable
        Overrides:
        writeExternal in class MTreeLeafEntry
        Throws:
        java.io.IOException
      • readExternal

        public void readExternal​(java.io.ObjectInput in)
                          throws java.io.IOException,
                                 java.lang.ClassNotFoundException
        Calls the super method and reads the knn distance of this entry from the specified input stream.
        Specified by:
        readExternal in interface java.io.Externalizable
        Overrides:
        readExternal in class MTreeLeafEntry
        Throws:
        java.io.IOException
        java.lang.ClassNotFoundException