Examples of org.apache.lucene.index.AtomicReaderContext

org.apache.lucene.index.AtomicReaderContext
{@link IndexReaderContext} for {@link AtomicReader} instances.

    for (IndexReaderContext ctext : reader.getContext().leaves()) {
      if (_isClosed.get() || _stop.get()) {
        LOG.info("Context [{0}] index closed", context);
        return null;
      }
      AtomicReaderContext atomicReaderContext = (AtomicReaderContext) ctext;
      AtomicReader atomicReader = atomicReaderContext.reader();
      if (atomicReader instanceof SegmentReader) {
        SegmentReader segmentReader = (SegmentReader) atomicReader;
        if (segmentReader.getSegmentName().equals(segmentName)) {
          return segmentReader.directory();
        }

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    for (IndexReaderContext ctext : reader.getContext().leaves()) {
      if (_isClosed.get() || _stop.get()) {
        LOG.info("Context [{0}] index closed", context);
        return null;
      }
      AtomicReaderContext atomicReaderContext = (AtomicReaderContext) ctext;
      AtomicReader atomicReader = atomicReaderContext.reader();
      if (atomicReader instanceof SegmentReader) {
        SegmentReader segmentReader = (SegmentReader) atomicReader;
        return segmentReader.directory();
      }
    }

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    for (IndexReaderContext ctext : reader.getContext().leaves()) {
      if (_isClosed.get() || _stop.get()) {
        LOG.info("Context [{0}] index closed", context);
        return null;
      }
      AtomicReaderContext atomicReaderContext = (AtomicReaderContext) ctext;
      AtomicReader atomicReader = atomicReaderContext.reader();
      results.putAll(sampleIndex(atomicReader, context));
    }
    return results;
  }

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    dq.add(tq("dek", "DOES_NOT_EXIST"));
    
    QueryUtils.check(random(), dq, s);
    assertTrue(s.getTopReaderContext() instanceof AtomicReaderContext);
    final Weight dw = s.createNormalizedWeight(dq);
    AtomicReaderContext context = (AtomicReaderContext)s.getTopReaderContext();
    final Scorer ds = dw.scorer(context, true, false, context.reader().getLiveDocs());
    final boolean skipOk = ds.advance(3) != DocIdSetIterator.NO_MORE_DOCS;
    if (skipOk) {
      fail("firsttime skipTo found a match? ... "
          + r.document(ds.docID()).get("id"));
    }

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    dq.add(tq("dek", "albino"));
    dq.add(tq("dek", "DOES_NOT_EXIST"));
    assertTrue(s.getTopReaderContext() instanceof AtomicReaderContext);
    QueryUtils.check(random(), dq, s);
    final Weight dw = s.createNormalizedWeight(dq);
    AtomicReaderContext context = (AtomicReaderContext)s.getTopReaderContext();
    final Scorer ds = dw.scorer(context, true, false, context.reader().getLiveDocs());
    assertTrue("firsttime skipTo found no match",
        ds.advance(3) != DocIdSetIterator.NO_MORE_DOCS);
    assertEquals("found wrong docid", "d4", r.document(ds.docID()).get("id"));
  }

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        continue; // nothing to do
      }
      bi.setText(content);
      int doc = docids[i];
      int leaf = ReaderUtil.subIndex(doc, leaves);
      AtomicReaderContext subContext = leaves.get(leaf);
      AtomicReader r = subContext.reader();
      Terms t = r.terms(field);
      if (t == null) {
        continue; // nothing to do
      }
      if (leaf != lastLeaf) {

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      if (mustRewriteQuery) {
        q = queries.get(field);
      } else {
        q = spanQuery;
      }
      AtomicReaderContext context = getLeafContext();
      Map<Term,TermContext> termContexts = new HashMap<Term,TermContext>();
      TreeSet<Term> extractedTerms = new TreeSet<Term>();
      q.extractTerms(extractedTerms);
      for (Term term : extractedTerms) {
        termContexts.put(term, TermContext.build(context, term, true));
      }
      Bits acceptDocs = context.reader().getLiveDocs();
      final Spans spans = q.getSpans(context, acceptDocs, termContexts);


      // collect span positions
      while (spans.next()) {
        spanPositions.add(new PositionSpan(spans.start(), spans.end() - 1));

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   * @throws BooleanQuery.TooManyClauses If a query would exceed 
   *         {@link BooleanQuery#getMaxClauseCount()} clauses.
   */
  protected Explanation explain(Weight weight, int doc) throws IOException {
    int n = ReaderUtil.subIndex(doc, leafContexts);
    final AtomicReaderContext ctx = leafContexts.get(n);
    int deBasedDoc = doc - ctx.docBase;
    
    return weight.explain(ctx, deBasedDoc);
  }

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      assert slice.leaves.length == 1;
      final TopFieldDocs docs = searcher.search(Arrays.asList(slice.leaves),
          weight, after, nDocs, sort, true, doDocScores, doMaxScore);
      lock.lock();
      try {
        final AtomicReaderContext ctx = slice.leaves[0];
        final int base = ctx.docBase;
        hq.setNextReader(ctx);
        hq.setScorer(fakeScorer);
        for(ScoreDoc scoreDoc : docs.scoreDocs) {
          fakeScorer.doc = scoreDoc.doc - base;

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    for (Term term : terms) {
      termContexts.put(term, TermContext.build(topLevelReaderContext, term, true));
    }
    final List<AtomicReaderContext> leaves = topLevelReaderContext.leaves();
    if(leaves.size() == 1) {
      final AtomicReaderContext ctx = leaves.get(0);
      return query.getSpans(ctx, ctx.reader().getLiveDocs(), termContexts);
    }
    return new MultiSpansWrapper(leaves, query, termContexts);
  }

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