Example usage for org.apache.lucene.search.spans Spans asTwoPhaseIterator

Introduction

In this page you can find the example usage for org.apache.lucene.search.spans Spans asTwoPhaseIterator.

Prototype

public TwoPhaseIterator asTwoPhaseIterator() 

Source Link

Document

Optional method: Return a TwoPhaseIterator view of this Scorer .

Usage

From source file:uk.co.flax.luwak.util.XConjunctionSpans.java

License:Apache License

/**
 * Return a {@link TwoPhaseIterator} view of this ConjunctionSpans.
 *//*w  w w  .j  a v  a  2s.  com*/
@Override
public TwoPhaseIterator asTwoPhaseIterator() {
    float totalMatchCost = 0;
    // Compute the matchCost as the total matchCost/positionsCostant of the sub spans.
    for (Spans spans : subSpans) {
        TwoPhaseIterator tpi = spans.asTwoPhaseIterator();
        if (tpi != null) {
            totalMatchCost += tpi.matchCost();
        } else {
            totalMatchCost += spans.positionsCost();
        }
    }
    final float matchCost = totalMatchCost;

    return new TwoPhaseIterator(conjunction) {
        @Override
        public boolean matches() throws IOException {
            return twoPhaseCurrentDocMatches();
        }

        @Override
        public float matchCost() {
            return matchCost;
        }
    };
}

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