Package com.yahoo.search.result

Class ChainableComparator

  • All Implemented Interfaces:
    java.util.Comparator<Hit>
    Direct Known Subclasses:
    FieldComparator, HitGroupsLastComparator, MetaHitsFirstComparator
    public abstract class ChainableComparator
extends java.lang.Object
implements java.util.Comparator<Hit>
    Superclass of hit comparators which delegates comparisons of hits which are equal according to this comparator, to a secondary comparator.
    Author:
    bratseth

    • Constructor Summary

      Constructors 
      Constructor Description
      ChainableComparator​(java.util.Comparator<Hit> secondaryComparator)
      Creates this comparator, given a secondary comparator, or null if there is no secondary

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      int compare​(Hit first, Hit second)
      Returns the comparison form the secondary comparison, or 0 if the secondary is null.
      java.util.Comparator<Hit> getSecondaryComparator()
      Returns the comparator to use to compare hits which are equal according to this, or null if none

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

      • Methods inherited from interface java.util.Comparator

        equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

    • Constructor Detail

      • ChainableComparator

        public ChainableComparator​(java.util.Comparator<Hit> secondaryComparator)
        Creates this comparator, given a secondary comparator, or null if there is no secondary

    • Method Detail

      • getSecondaryComparator

        public java.util.Comparator<Hit> getSecondaryComparator()
        Returns the comparator to use to compare hits which are equal according to this, or null if none

      • compare

        public int compare​(Hit first,
                   Hit second)
        Returns the comparison form the secondary comparison, or 0 if the secondary is null. When overriding this in the subclass, always return super.compare(first,second) at the end of the subclass' implementation.
        Specified by:
        compare in interface java.util.Comparator<Hit>