Package com.yahoo.search.predicate.index

Class Interval

java.lang.Object
com.yahoo.search.predicate.index.Interval
public class Interval extends Object
Utility class for interval related constants and methods. An interval consists of a begin and end value indicating the start and end of the interval. Both value are inclusive, eg (1,2) is an interval of size 2. There are 3 types of interval; normal, ZStar1 and ZStar2. Normal intervals have begin value in 16 MSB and end in 16 LSB. ZStar1 intervals have end value in 16 MSB and begin in 16 LSB. ZStar2 intervals have only an end value located at 16 LSB.
Author:
Magnar Nedland, bjorncs

  • Field Details

  • Method Details

    • fromBoundaries

      public static int fromBoundaries(int begin, int end)

    • fromZStar1Boundaries

      public static int fromZStar1Boundaries(int begin, int end)

    • fromZStar2Boundaries

      public static int fromZStar2Boundaries(int end)

    • isZStar1Interval

      public static boolean isZStar1Interval(int interval)

    • isZStar2Interval

      public static boolean isZStar2Interval(int interval)

    • getBegin

      public static int getBegin(int interval)

    • getEnd

      public static int getEnd(int interval)

    • getZStar1Begin

      public static int getZStar1Begin(int interval)

    • getZStar1End

      public static int getZStar1End(int interval)

    • getZStar2End

      public static int getZStar2End(int interval)

    • combineZStarIntervals

      public static int combineZStarIntervals(int zStar1, int zStar2)
      Returns:
      A new ZStar1 interval with boundaries [end(zStar1)+1, end(zStar2)]