Class SpanScorer

    • Field Detail

      • spans

        protected final Spans spans
      • freq

        private float freq
        accumulated sloppy freq (computed in setFreqCurrentDoc)
      • numMatches

        private int numMatches
        number of matches (computed in setFreqCurrentDoc)
      • lastScoredDoc

        private int lastScoredDoc
    • Method Detail

      • getSpans

        public Spans getSpans()
        return the Spans for this Scorer
      • docID

        public int docID()
        Description copied from class: Scorable
        Returns the doc ID that is currently being scored.
        Specified by:
        docID in class Scorable
      • iterator

        public DocIdSetIterator iterator()
        Description copied from class: Scorer
        Return a DocIdSetIterator over matching documents. The returned iterator will either be positioned on -1 if no documents have been scored yet, DocIdSetIterator.NO_MORE_DOCS if all documents have been scored already, or the last document id that has been scored otherwise. The returned iterator is a view: calling this method several times will return iterators that have the same state.
        Specified by:
        iterator in class Scorer
      • twoPhaseIterator

        public TwoPhaseIterator twoPhaseIterator()
        Description copied from class: Scorer
        Optional method: Return a TwoPhaseIterator view of this Scorer. A return value of null indicates that two-phase iteration is not supported. Note that the returned TwoPhaseIterator's approximation must advance synchronously with the Scorer.iterator(): advancing the approximation must advance the iterator and vice-versa. Implementing this method is typically useful on Scorers that have a high per-document overhead in order to confirm matches. The default implementation returns null.
        Overrides:
        twoPhaseIterator in class Scorer
      • scoreCurrentDoc

        protected float scoreCurrentDoc()
                                 throws java.io.IOException
        Score the current doc. The default implementation scores the doc with the similarity using the slop-adjusted freq.
        Throws:
        java.io.IOException
      • setFreqCurrentDoc

        protected final void setFreqCurrentDoc()
                                        throws java.io.IOException
        Sets freq and numMatches for the current document.

        This will be called at most once per document.

        Throws:
        java.io.IOException
      • ensureFreq

        private void ensureFreq()
                         throws java.io.IOException
        Ensure setFreqCurrentDoc is called, if not already called for the current doc.
        Throws:
        java.io.IOException
      • score

        public final float score()
                          throws java.io.IOException
        Description copied from class: Scorable
        Returns the score of the current document matching the query.
        Specified by:
        score in class Scorable
        Throws:
        java.io.IOException
      • getMaxScore

        public float getMaxScore​(int upTo)
                          throws java.io.IOException
        Description copied from class: Scorer
        Return the maximum score that documents between the last target that this iterator was shallow-advanced to included and upTo included.
        Specified by:
        getMaxScore in class Scorer
        Throws:
        java.io.IOException
      • sloppyFreq

        final float sloppyFreq()
                        throws java.io.IOException
        Returns the intermediate "sloppy freq" adjusted for edit distance
        Throws:
        java.io.IOException