Example #1
0
        public bool TryGetValuesPartial(IEnumerable <ICompoundIndexKey> myKeys, out ICloseableEnumerable <long> myVertexIDs)
        {
            LuceneReturn results          = null;
            var          results_compound = new List <Tuple <long, IComparable, long> >();

            foreach (var key in myKeys)
            {
                results = _LuceneIndex.GetEntriesInnerByField(_MaxResultsFirst, key.Key as String, key.PropertyID.ToString(), LuceneIndex.Fields.PROPERTY_ID);
                if (results.TotalHits > _MaxResultsFirst)
                {
                    results.Close();
                    results = _LuceneIndex.GetEntriesInnerByField(_MaxResultsFirst, key.Key as String, key.PropertyID.ToString(), LuceneIndex.Fields.PROPERTY_ID);
                }

                results_compound.AddRange(results.Where((e) => e.PropertyId != null).Select((e) => new Tuple <long, IComparable, long>((long)e.PropertyId, e.Text, e.VertexId)));
            }

            var grouped = from myresults in results_compound group myresults by myresults.Item3;

            if (grouped.Count() > 0)
            {
                myVertexIDs = new CloseableEnumerable <long>(grouped.Select <IGrouping <long, Tuple <long, IComparable, long> >, long>((g) => g.Key), results.Close);
                return(true);
            }
            else
            {
                myVertexIDs = null;
                return(false);
            }
        }
Example #2
0
        public bool TryGetValues(IEnumerable <ICompoundIndexKey> myKeys, out ICloseableEnumerable <long> myVertexIDs)
        {
            LuceneReturn results          = null;
            var          results_compound = new List <Tuple <long, IComparable, long> >();

            foreach (var key in myKeys)
            {
                results = _LuceneIndex.GetEntriesInnerByField(_MaxResultsFirst, key.Key as String, key.PropertyID.ToString(), LuceneIndex.Fields.PROPERTY_ID);
                if (results.TotalHits > _MaxResultsFirst)
                {
                    results.Close();
                    results = _LuceneIndex.GetEntriesInnerByField(results.TotalHits, key.Key as String, key.PropertyID.ToString(), LuceneIndex.Fields.PROPERTY_ID);
                }

                results_compound.AddRange(results
                                          .Where((e) => e.PropertyId != null)
                                          .Select((e) => new Tuple <long, IComparable, long>((long)e.PropertyId, e.Text, e.VertexId)));
            }

            var grouped = from myresults in results_compound group myresults by myresults.Item3;

            if (grouped.Count() > 0)
            {
                var _myVertexIDs = grouped
                                   .Where((myGroup) =>
                {
                    var join =
                        from entry in myGroup
                        join key in myKeys
                        on new
                    {
                        JoinField1 = entry.Item2,
                        JoinField2 = entry.Item1
                    }
                    equals new
                    {
                        JoinField1 = key.Key,
                        JoinField2 = key.PropertyID
                    }
                    select entry;

                    if (join.Count() == myKeys.Count())
                    {
                        return(true);
                    }
                    else
                    {
                        return(false);
                    }
                })
                                   .Select <IGrouping <long, Tuple <long, IComparable, long> >, long>((g) => g.Key);

                if (_myVertexIDs.Count() > 0)
                {
                    myVertexIDs = new CloseableEnumerable <long>(_myVertexIDs, results.Close);
                    return(true);
                }
                else
                {
                    myVertexIDs = null;
                    return(false);
                }
            }
            else
            {
                myVertexIDs = null;
                return(false);
            }
        }