Package org.apache.lucene.search

Examples of org.apache.lucene.search.DocIdSet

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    public DocumentFilteredAtomicIndexReader(AtomicReaderContext context, Filter preserveFilter, boolean negateFilter) throws IOException {
      super(context.reader());
      final int maxDoc = in.maxDoc();
      final FixedBitSet bits = new FixedBitSet(maxDoc);
      // ignore livedocs here, as we filter them later:
      final DocIdSet docs = preserveFilter.getDocIdSet(context, null);
      if (docs != null) {
        final DocIdSetIterator it = docs.iterator();
        if (it != null) {
          bits.or(it);
        }
      }
      if (negateFilter) {
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      // NOTE: we cannot pass acceptDocs here because this
      // will (most likely, justifiably) cause the filter to
      // not return a FixedBitSet but rather a
      // BitsFilteredDocIdSet.  Instead, we filter by
      // acceptDocs when we score:
      final DocIdSet parents = parentsFilter.getDocIdSet(readerContext, null);

      if (parents == null
          || parents.iterator().docID() == DocIdSetIterator.NO_MORE_DOCS) { // <-- means DocIdSet#EMPTY_DOCIDSET
        // No matches
        return null;
      }
      if (!(parents instanceof FixedBitSet)) {
        throw new IllegalStateException("parentFilter must return FixedBitSet; got " + parents);
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    w2.close();
   
    TermsFilter tf = new TermsFilter(new Term(fieldName, "content1"));
    MultiReader multi = new MultiReader(reader1, reader2);
    for (AtomicReaderContext context : multi.leaves()) {
      DocIdSet docIdSet = tf.getDocIdSet(context, context.reader().getLiveDocs());
      if (context.reader().docFreq(new Term(fieldName, "content1")) == 0) {
        assertNull(docIdSet);
      } else {
        FixedBitSet bits = (FixedBitSet) docIdSet;
        assertTrue("Must be >= 0", bits.cardinality() >= 0);     
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      // NOTE: we cannot pass acceptDocs here because this
      // will (most likely, justifiably) cause the filter to
      // not return a FixedBitSet but rather a
      // BitsFilteredDocIdSet.  Instead, we filter by
      // acceptDocs when we score:
      final DocIdSet parents = parentsFilter.getDocIdSet(readerContext, null);

      if (parents == null) {
        // No matches
        return null;
      }
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   */
  public final static ScoredDocIDs getComplementSet(final ScoredDocIDs docids, final IndexReader reader)
      throws IOException {
    final int maxDoc = reader.maxDoc();

    DocIdSet docIdSet = docids.getDocIDs();
    final FixedBitSet complement;
    if (docIdSet instanceof FixedBitSet) {
      // That is the most common case, if ScoredDocIdsCollector was used.
      complement = ((FixedBitSet) docIdSet).clone();
    } else {
      complement = new FixedBitSet(maxDoc);
      DocIdSetIterator iter = docIdSet.iterator();
      int doc;
      while ((doc = iter.nextDoc()) < maxDoc) {
        complement.set(doc);
      }
    }
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    return new ScoredDocIDs() {

      @Override
      public DocIdSet getDocIDs() {
        return new DocIdSet() {

          @Override
          public boolean isCacheable() { return true; }

          @Override
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    };
  }

  @Override
  public DocIdSet getDocIDs() {
    return new DocIdSet() {
     
      final Iterator<MatchingDocs> mdIter = matchingDocs.iterator();
      int doc = 0;
      MatchingDocs current;
      int currentLength;
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      return maxDoc;
    }

    @Override
    public DocIdSet getDocIDs() {
      return new DocIdSet() {

        @Override
        public boolean isCacheable() {
          return true;
        }
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      return reader.numDocs();
    }

    @Override
    public DocIdSet getDocIDs() {
      return new DocIdSet() {

        @Override
        public boolean isCacheable() {
          return true;
        }
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    for (int i = 0; i < iters; ++i) {
      final int pow = random().nextInt(20);
      final int maxDoc = TestUtil.nextInt(random(), 1, 1 << pow);
      final int numDocs = TestUtil.nextInt(random(), 0, Math.min(maxDoc, 1 << TestUtil.nextInt(random(), 0, pow)));
      final BitSet set = randomSet(maxDoc, numDocs);
      final DocIdSet copy = copyOf(set, maxDoc);
      final long actualBytes = ramBytesUsed(copy, maxDoc);
      final long expectedBytes = copy.ramBytesUsed();
      assertEquals(expectedBytes, actualBytes);
    }
  }
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