コード例 #1
0
 private OpenBitSetDISI initialResult(IndexReader reader, int logic, int[] index)
 {
     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;
 }
コード例 #2
0
ファイル: BooleanFilter.cs プロジェクト: Rationalle/ravendb
        /// <summary>
        /// Get the id set for the filter.
        /// </summary>
        /// <param name="reader">The reader.</param>
        /// <returns>The filter set to use.</returns>
        public override DocIdSet GetDocIdSet(IndexReader reader)
        {
            OpenBitSetDISI res = null;

            if (shouldFilters != null)
            {
                for (int i = 0; i < shouldFilters.Count; i++)
                {
                    if (res == null)
                    {
                        res = new OpenBitSetDISI(GetDISI(shouldFilters, i, reader), reader.MaxDoc());
                    }
                    else
                    {
                        DocIdSet dis = ((Filter)shouldFilters[i]).GetDocIdSet(reader);
                        if (dis is 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.Count; 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[i]).GetDocIdSet(reader);
                        if (dis is 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.Count; i++)
                {
                    if (res == null)
                    {
                        res = new OpenBitSetDISI(GetDISI(mustFilters, i, reader), reader.MaxDoc());
                    }
                    else
                    {
                        DocIdSet dis = ((Filter)mustFilters[i]).GetDocIdSet(reader);
                        if (dis is OpenBitSet)
                        {
                            // optimized case for OpenBitSets
                            res.And((OpenBitSet)dis);
                        }
                        else
                        {
                            res.InPlaceAnd(GetDISI(mustFilters, i, reader));
                        }
                    }
                }
            }

            if (res != null)
                return FinalResult(res, reader.MaxDoc());

            else
            {
                //TODO: 2.- change return DocIdSet.EMPTY_DOCIDSET;
                return null;
            }
        }