Package org.apache.lucene.util

Examples of org.apache.lucene.util.FixedBitSet

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     * Just removes our overlaid deletions - does not undelete the original
     * deletions.
     */
    @Override
    protected void doUndeleteAll() throws CorruptIndexException, IOException {
      dels = new FixedBitSet(in.maxDoc());
      if (oldDels != null) {
        dels.or(oldDels);
      }
    }
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    final int numDocs;
   
    public DocumentFilteredIndexReader(IndexReader reader, Filter preserveFilter, boolean negateFilter) throws IOException {
      super(reader);
     
      final FixedBitSet bits = new FixedBitSet(in.maxDoc());
      final DocIdSet docs = preserveFilter.getDocIdSet(in);
      if (docs != null) {
        final DocIdSetIterator it = docs.iterator();
        if (it != null) {
          bits.or(it);
        }
      }
      // this is somehow inverse, if we negate the filter, we delete all documents it matches!
      if (!negateFilter) {
        bits.flip(0, in.maxDoc());
      }

      if (in.hasDeletions()) {
        for (int i = 0; i < in.maxDoc(); i++) {
          if (in.isDeleted(i)) {
            bits.set(i);
          }
        }
      }
     
      this.readerDels = bits;
      this.numDocs = in.maxDoc() - bits.cardinality();
    }
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    assertDocIdSetCacheable(reader, FieldCacheRangeFilter.newIntRange("test", Integer.valueOf(10), Integer.valueOf(20), true, true), true);
    // a fixedbitset filter is always cacheable
    assertDocIdSetCacheable(reader, new Filter() {
      @Override
      public DocIdSet getDocIdSet(IndexReader reader) {
        return new FixedBitSet(reader.maxDoc());
      }
    }, true);

    reader.close();
    dir.close();
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    AtomicReaderContext context = (AtomicReaderContext) reader.getContext();
    w.close();

    List<Term> terms = new ArrayList<Term>();
    terms.add(new Term(fieldName, "19"));
    FixedBitSet bits = (FixedBitSet) termsFilter(random().nextBoolean(), terms).getDocIdSet(context, context.reader().getLiveDocs());
    assertNull("Must match nothing", bits);

    terms.add(new Term(fieldName, "20"));
    bits = (FixedBitSet) termsFilter(random().nextBoolean(), terms).getDocIdSet(context, context.reader().getLiveDocs());
    assertEquals("Must match 1", 1, bits.cardinality());

    terms.add(new Term(fieldName, "10"));
    bits = (FixedBitSet) termsFilter(random().nextBoolean(), terms).getDocIdSet(context, context.reader().getLiveDocs());
    assertEquals("Must match 2", 2, bits.cardinality());

    terms.add(new Term(fieldName, "00"));
    bits = (FixedBitSet) termsFilter(random().nextBoolean(), terms).getDocIdSet(context, context.reader().getLiveDocs());
    assertEquals("Must match 2", 2, bits.cardinality());

    reader.close();
    rd.close();
  }
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    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);     
      }
    }
    multi.close();
    reader1.close();
    reader2.close();
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    AtomicReaderContext context = reader.leaves().get(0);
    TermsFilter tf = new TermsFilter(terms);

    FixedBitSet bits = (FixedBitSet) tf.getDocIdSet(context, context.reader().getLiveDocs());
    assertEquals("Must be num fields - 1 since we skip only one field", num-1, bits.cardinality()); 
    reader.close();
    dir.close();
  }
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    w.close();
    assertEquals(1, reader.leaves().size());
    AtomicReaderContext context = reader.leaves().get(0);
    TermsFilter tf = new TermsFilter(new ArrayList<Term>(terms));

    FixedBitSet bits = (FixedBitSet) tf.getDocIdSet(context, context.reader().getLiveDocs());
    assertEquals(context.reader().numDocs(), bits.cardinality()); 
    reader.close();
    dir.close();
  }
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      return liveDocs.cardinality();
    }

    public void undeleteAll()  {
      final int maxDoc = in.maxDoc();
      liveDocs = new FixedBitSet(in.maxDoc());
      if (in.hasDeletions()) {
        final Bits oldLiveDocs = in.getLiveDocs();
        assert oldLiveDocs != null;
        // this loop is a little bit ineffective, as Bits has no nextSetBit():
        for (int i = 0; i < maxDoc; i++) {
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    final int numDocs;
   
    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) {
        bits.flip(0, maxDoc);
      }

      if (in.hasDeletions()) {
        final Bits oldLiveDocs = in.getLiveDocs();
        assert oldLiveDocs != null;
        final DocIdSetIterator it = bits.iterator();
        for (int i = it.nextDoc(); i < maxDoc; i = it.nextDoc()) {
          if (!oldLiveDocs.get(i)) {
            // we can safely modify the current bit, as the iterator already stepped over it:
            bits.clear(i);
          }
        }
      }
     
      this.liveDocs = bits;
      this.numDocs = bits.cardinality();
    }
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        }
        filter = new Filter() {
            @Override
            public DocIdSet getDocIdSet(AtomicReaderContext context, Bits acceptDocs) throws IOException {
              int maxDoc = context.reader().maxDoc();
              final FixedBitSet bits = new FixedBitSet(maxDoc);
              for(int docID=0;docID < maxDoc;docID++) {
                // Keeps only the even ids:
                if ((acceptDocs == null || acceptDocs.get(docID)) && ((Integer.parseInt(context.reader().document(docID).get("id")) & 1) == 0)) {
                  bits.set(docID);
                }
              }
              return bits;
            }
          };
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  • com.greplin.lucene.filter.FixedBitSets
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