Example usage for org.apache.lucene.search DocIdSetIterator all

Introduction

In this page you can find the example usage for org.apache.lucene.search DocIdSetIterator all.

Prototype

public static final DocIdSetIterator all(int maxDoc) 

Source Link

Document

A DocIdSetIterator that matches all documents up to maxDoc - 1 .

Usage

From source file:org.vootoo.search.function.ValueSourceCollectorFilter.java

License:Apache License

@Override
public DocIdSet getDocIdSet(@SuppressWarnings("rawtypes") final Map context,
        final LeafReaderContext readerContext, Bits acceptDocs) throws IOException {
    collectorFilterable.doSetNextReader(context, readerContext);
    //TODO  check getDocIdSet use
    return BitsFilteredDocIdSet.wrap(new DocIdSet() {
        @Override/* w  w w .  j  a  v a 2s . co m*/
        public long ramBytesUsed() {
            return 0;
        }

        @Override
        public DocIdSetIterator iterator() throws IOException {
            final DocIdSetIterator approximation = DocIdSetIterator.all(readerContext.reader().maxDoc()); // no approximation!
            TwoPhaseIterator twoPhaseIterator = new TwoPhaseIterator(approximation) {
                @Override
                public boolean matches() throws IOException {
                    return collectorFilterable.matches(approximation.docID());
                }

                @Override
                public float matchCost() {
                    return 100; // TODO: use cost of ValueSourceScorer.this.matches()
                }
            };
            return TwoPhaseIterator.asDocIdSetIterator(twoPhaseIterator);
        }

        @Override
        public Bits bits() {
            return null; // don't use random access
        }
    }, acceptDocs);
}

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