Package org.apache.lucene.util

Examples of org.apache.lucene.util.OpenBitSetDISI

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     * @return DocIdSet
     */
    private DocIdSet getDocIdSet(IndexReader reader, int logic, int[] index)
    throws IOException
    {
        OpenBitSetDISI result = initialResult(reader, logic, index);
        for (; index[0] < chain.length; index[0]++)
        {
            doChain(result, logic, chain[index[0]].getDocIdSet(reader));
        }
        return finalResult(result, reader.maxDoc());
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    throws IOException
    {
        if (logic.length != chain.length)
            throw new IllegalArgumentException("Invalid number of elements in logic array");

        OpenBitSetDISI result = initialResult(reader, logic[0], index);
        for (; index[0] < chain.length; index[0]++)
        {
            doChain(result, logic[index[0]], chain[index[0]].getDocIdSet(reader));
        }
        return finalResult(result, reader.maxDoc());
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   * Returns the a DocIdSetIterator representing the Boolean composition
   * of the filters that have been added.
   */
  public DocIdSet getDocIdSet(IndexReader reader) throws IOException
  {
    OpenBitSetDISI res = null;
 
    if (shouldFilters != null) {
      for (int i = 0; i < shouldFilters.size(); i++) {
        if (res == null) {
          res = new OpenBitSetDISI(getDISI(shouldFilters, i, reader), reader.maxDoc());
        } else {
          DocIdSet dis = ((Filter)shouldFilters.get(i)).getDocIdSet(reader);
          if(dis instanceof OpenBitSet) {
            // optimized case for OpenBitSets
            res.or((OpenBitSet) dis);
          } else {
            res.inPlaceOr(getDISI(shouldFilters, i, reader));
          }
        }
      }
    }
   
    if (notFilters!=null) {
      for (int i = 0; i < notFilters.size(); i++) {
        if (res == null) {
          res = new OpenBitSetDISI(getDISI(notFilters, i, reader), reader.maxDoc());
          res.flip(0, reader.maxDoc()); // NOTE: may set bits on deleted docs
        } else {
          DocIdSet dis = ((Filter)notFilters.get(i)).getDocIdSet(reader);
          if(dis instanceof OpenBitSet) {
            // optimized case for OpenBitSets
            res.andNot((OpenBitSet) dis);
          } else {
            res.inPlaceNot(getDISI(notFilters, i, reader));
          }
        }
      }
    }
   
    if (mustFilters!=null) {
      for (int i = 0; i < mustFilters.size(); i++) {
        if (res == null) {
          res = new OpenBitSetDISI(getDISI(mustFilters, i, reader), reader.maxDoc());
        } else {
          DocIdSet dis = ((Filter)mustFilters.get(i)).getDocIdSet(reader);
          if(dis instanceof OpenBitSet) {
            // optimized case for OpenBitSets
            res.and((OpenBitSet) dis);
          } else {
            res.inPlaceAnd(getDISI(mustFilters, i, reader));
          }
        }
      }
    }
   
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    } else {
      final DocIdSetIterator it = docIdSet.iterator();
      // null is allowed to be returned by iterator(),
      // in this case we wrap with the empty set,
      // which is cacheable.
      return (it == null) ? DocIdSet.EMPTY_DOCIDSET : new OpenBitSetDISI(it, reader.maxDoc());
    }
  }
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    } else {
      final DocIdSetIterator it = docIdSet.iterator();
      // null is allowed to be returned by iterator(),
      // in this case we wrap with the empty set,
      // which is cacheable.
      return (it == null) ? DocIdSet.EMPTY_DOCIDSET : new OpenBitSetDISI(it, reader.maxDoc());
    }
  }
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    } else {
      final DocIdSetIterator it = docIdSet.iterator();
      // null is allowed to be returned by iterator(),
      // in this case we wrap with the empty set,
      // which is cacheable.
      return (it == null) ? DocIdSet.EMPTY_DOCIDSET : new OpenBitSetDISI(it, reader.maxDoc());
    }
  }
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    }

    private OpenBitSetDISI initialResult(IndexReader reader, int logic, int[] index)
    throws IOException
    {
        OpenBitSetDISI result;
        /**
         * First AND operation takes place against a completely false
         * bitset and will always return zero results.
         */
        if (logic == AND)
        {
            result = new OpenBitSetDISI(getDISI(chain[index[0]], reader), reader.maxDoc());
            ++index[0];
        }
        else if (logic == ANDNOT)
        {
            result = new OpenBitSetDISI(getDISI(chain[index[0]], reader), reader.maxDoc());
            result.flip(0,reader.maxDoc()); // NOTE: may set bits for deleted docs.
            ++index[0];
        }
        else
        {
            result = new OpenBitSetDISI(reader.maxDoc());
        }
        return result;
    }
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     * @return DocIdSet
     */
    private DocIdSet getDocIdSet(IndexReader reader, int logic, int[] index)
    throws IOException
    {
        OpenBitSetDISI result = initialResult(reader, logic, index);
        for (; index[0] < chain.length; index[0]++)
        {
            doChain(result, logic, chain[index[0]].getDocIdSet(reader));
        }
        return finalResult(result, reader.maxDoc());
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    throws IOException
    {
        if (logic.length != chain.length)
            throw new IllegalArgumentException("Invalid number of elements in logic array");

        OpenBitSetDISI result = initialResult(reader, logic[0], index);
        for (; index[0] < chain.length; index[0]++)
        {
            doChain(result, logic[index[0]], chain[index[0]].getDocIdSet(reader));
        }
        return finalResult(result, reader.maxDoc());
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   * of the filters that have been added.
   */
  @Override
  public DocIdSet getDocIdSet(IndexReader reader) throws IOException
  {
    OpenBitSetDISI res = null;
 
    if (shouldFilters != null) {
      for (int i = 0; i < shouldFilters.size(); i++) {
        if (res == null) {
          res = new OpenBitSetDISI(getDISI(shouldFilters, i, reader), reader.maxDoc());
        } else {
          DocIdSet dis = shouldFilters.get(i).getDocIdSet(reader);
          if(dis instanceof OpenBitSet) {
            // optimized case for OpenBitSets
            res.or((OpenBitSet) dis);
          } else {
            res.inPlaceOr(getDISI(shouldFilters, i, reader));
          }
        }
      }
    }
   
    if (notFilters!=null) {
      for (int i = 0; i < notFilters.size(); i++) {
        if (res == null) {
          res = new OpenBitSetDISI(getDISI(notFilters, i, reader), reader.maxDoc());
          res.flip(0, reader.maxDoc()); // NOTE: may set bits on deleted docs
        } else {
          DocIdSet dis = notFilters.get(i).getDocIdSet(reader);
          if(dis instanceof OpenBitSet) {
            // optimized case for OpenBitSets
            res.andNot((OpenBitSet) dis);
          } else {
            res.inPlaceNot(getDISI(notFilters, i, reader));
          }
        }
      }
    }
   
    if (mustFilters!=null) {
      for (int i = 0; i < mustFilters.size(); i++) {
        if (res == null) {
          res = new OpenBitSetDISI(getDISI(mustFilters, i, reader), reader.maxDoc());
        } else {
          DocIdSet dis = mustFilters.get(i).getDocIdSet(reader);
          if(dis instanceof OpenBitSet) {
            // optimized case for OpenBitSets
            res.and((OpenBitSet) dis);
          } else {
            res.inPlaceAnd(getDISI(mustFilters, i, reader));
          }
        }
      }
    }
   
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