Class Fields

    • Field Detail


        public static final Fields[] EMPTY_ARRAY
        Zero-length Fields array.
    • Method Detail

      • iterator

        public abstract Iterator<String> iterator()
        Returns an iterator that will step through all fields names. This will not return null.
        Specified by:
        iterator in interface Iterable<String>
      • size

        public abstract int size()
        Returns the number of fields or -1 if the number of distinct field names is unknown. If >= 0, iterator() will return as many field names.
      • getUniqueTermCount

        public long getUniqueTermCount()
                                throws IOException
        iterate fields and add their size() instead. this method is only provided as a transition mechanism to access this statistic for 3.x indexes, which do not have this statistic per-field.
        Returns the number of terms for all fields, or -1 if this measure isn't stored by the codec. Note that, just like other term measures, this measure does not take deleted documents into account.
        See Also: