Example usage for org.apache.lucene.util DocIdSetBuilder DocIdSetBuilder

Introduction

In this page you can find the example usage for org.apache.lucene.util DocIdSetBuilder DocIdSetBuilder.

Prototype

public DocIdSetBuilder(int maxDoc) 

Source Link

Document

Create a builder that can contain doc IDs between 0 and maxDoc .

Usage

From source file:org.codelibs.elasticsearch.search.slice.TermsSliceQuery.java

License:Apache License

/**
 * Returns a DocIdSet per segments containing the matching docs for the specified slice.
 *///from  w ww .j  a v a2s  .  c  om
private DocIdSet build(LeafReader reader) throws IOException {
    final DocIdSetBuilder builder = new DocIdSetBuilder(reader.maxDoc());
    final Terms terms = reader.terms(getField());
    final TermsEnum te = terms.iterator();
    PostingsEnum docsEnum = null;
    for (BytesRef term = te.next(); term != null; term = te.next()) {
        int hashCode = term.hashCode();
        if (contains(hashCode)) {
            docsEnum = te.postings(docsEnum, PostingsEnum.NONE);
            builder.add(docsEnum);
        }
    }
    return builder.build();
}

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From source file:solutions.siren.join.index.query.TermsEnumTermsQuery.java

License:Open Source License

public DocIdSet getDocIdSet(LeafReaderContext context) throws IOException {
    final Terms terms = context.reader().terms(field);
    // make sure the field exists
    if (terms == null)
        return null;

    final BytesRefTermsSet termsSet = this.getTermsSet();
    // make sure there are terms to filter on
    if (termsSet == null || termsSet.isEmpty())
        return null;

    SeekingTermSetTermsEnum termsEnum = new SeekingTermSetTermsEnum(terms.iterator(), termsSet);

    DocIdSetBuilder builder = new DocIdSetBuilder(context.reader().maxDoc());
    PostingsEnum docs = null;/*from   w  w  w .j  a va  2 s .co  m*/
    while (termsEnum.next() != null) {
        docs = termsEnum.postings(docs, PostingsEnum.NONE);
        builder.add(docs);
    }

    return builder.build();
}

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