public AggregationPointer(AggregationPointer parent, Attribute attribute)
{
Parent = parent;
Attribute = attribute;
}
public CellSet Execute(QueryCommand cmd)
{
Joiner joiner = new Joiner(_pool, _connection, cmd);
joiner.Run();
if (_pool.Aggregations.Count == 0)
{
return(new CellSet());
}
CellSet cs = new CellSet();
DateTime t = DateTime.Now;
QuerySets.JoinedMembers columns = cmd.Columns.JoinMembers(_pool.FindAggregation(cmd.Columns.Attributes));
QuerySets.JoinedMembers rows = cmd.Rows.Count > 0 ?
cmd.Rows.JoinMembers(_pool.FindAggregation(cmd.Rows.Attributes)) :
new QuerySets.JoinedMembers();
QuerySets.JoinedMembers filters;
bool reverseFilter = cmd.Filters.ShouldReverse;
if (!reverseFilter)
{
filters = cmd.Filters.Count > 0 ?
cmd.Filters.JoinMembers(_pool.FindAggregation(cmd.Filters.Attributes), true) :
new QuerySets.JoinedMembers();
}
else
{
reverseFilter = true;
QuerySets reversed = cmd.Filters.ReverseMembers();
filters = reversed.Count > 0 ?
reversed.JoinMembers(_pool.FindAggregation(reversed.Attributes), true) :
new QuerySets.JoinedMembers();
}
// AggregationPointer is for total lookup
AggregationPointer root = null;
Aggregation defaultAggregation = _pool.FindAggregation(GetAttributes());
if (defaultAggregation != null)
{
List <Position> cps = cs.Axes[0].Positions;
List <Position> rps = cs.Axes[1].Positions;
for (int i = 0; i < rows.Count; i++)
{
rps.Add(new Position(rows[i], i));
}
for (int i = 0; i < columns.Count; i++)
{
cps.Add(new Position(columns[i], i));
}
if (filters.Count > 0)
{
if (reverseFilter)
{
// Query values without filters first
Attribute[] crIndex = cmd.Columns.Attributes.Concat(cmd.Rows.Attributes).ToArray();
DirectQuery(_pool.FindAggregation(crIndex));
// Then query values with filter
if (root != null)
{
root.Clear();
}
root = null;
IEnumerable <Cell> filtered = IncrementalQuery(defaultAggregation);
// Substract
int i = 0;
foreach (Cell cell in filtered)
{
if (cell.Value != null)
{
if (cell.DataType == typeof(int))
{
cs.Cells[i].Value = (int)cs.Cells[i].Value - (int)cell.Value;
}
else
{
cs.Cells[i].Value = (decimal)cs.Cells[i].Value - (decimal)cell.Value;
}
}
i++;
}
}
else
{
IncrementalQuery(defaultAggregation, cs.Cells);
}
}
else
{
DirectQuery(defaultAggregation);
}
}
cs.QueryTime = (DateTime.Now - t).TotalMilliseconds;
return(cs);
Attribute[] GetAttributes()
{
List <Attribute> attrs = new List <Attribute>();
attrs.AddRange(filters.Attributes);
attrs.AddRange(columns.Attributes);
attrs.AddRange(rows.Attributes);
return(attrs.ToArray());
}
IEnumerable <Cell> IncrementalQuery(Aggregation agg, List <Cell> cells = null)
{
List <CellAggregator> cas = new List <CellAggregator>();
if (rows.Count == 0)
{
for (int i = 0; i < filters.Count; i++)
{
int pointer = 0;
for (int j = 0; j < columns.Count; j++)
{
if (i == 0)
{
cas.Add(new CellAggregator(GetValueInfo(agg.GetValue(false, filters[i], columns[j]))));
}
else
{
cas[pointer].Add(GetValueInfo(agg.GetValue(false, filters[i], columns[j])));
pointer++;
}
}
}
}
else
{
for (int i = 0; i < filters.Count; i++)
{
int pointer = 0;
for (int j = 0; j < rows.Count; j++)
{
for (int k = 0; k < columns.Count; k++)
{
if (i == 0)
{
cas.Add(new CellAggregator(GetValueInfo(agg.GetValue(false, filters[i], columns[k], rows[j]))));
}
else
{
cas[pointer].Add(GetValueInfo(agg.GetValue(false, filters[i], columns[k], rows[j])));
pointer++;
}
}
}
}
}
//cas.ForEach(_ => cs.Cells.Add(new Cell(_.Calculate())));
if (cells != null)
{
cas.ForEach(_ => cells.Add(new Cell(_.Calculate())));
return(null);
}
else
{
return(cas.Select(_ => new Cell(_.Calculate(), _.DataType)));
}
}
void DirectQuery(Aggregation agg)
{
if (rows.Count == 0)
{
for (int i = 0; i < columns.Count; i++)
{
cs.Cells.Add(new Cell(GetValueInfo(agg.GetValue(false, columns[i])).Value));
}
}
else
{
for (int i = 0; i < rows.Count; i++)
{
for (int j = 0; j < columns.Count; j++)
{
cs.Cells.Add(new Cell(GetValueInfo(agg.GetValue(false, columns[j], rows[i])).Value));
}
}
}
}
Aggregation.ValueInfo GetValueInfo(Aggregation.ValueInfo vinfo)
{
// vinfo.IsTotal -> Place holder for total
// AggregationPointer -> Point to total aggregation indexed by total place holder's attributes
if (vinfo.IsTotal)
{
// Find or create AggregationPointer based on total place holder's attributes
int c = 0;
AggregationPointer cp = root;
foreach (AttributeMember[] members in vinfo.Members)
{
foreach (AttributeMember m in members)
{
if (!m.IsTotal && m.LinkedMeasure == null)
{
if (c == 0)
{
if (root == null)
{
root = new AggregationPointer(m.Attribute);
}
cp = root;
}
else
{
AggregationPointer p = cp[m.Attribute];
if (p == null)
{
p = new AggregationPointer(cp, m.Attribute);
cp.Children.Add(p);
}
cp = p;
}
c++;
}
}
}
// Find and assign total aggregation if it is a new pointer (cp.Aggregation == null)
if (cp.Aggregation == null)
{
cp.Aggregation = _pool.FindAggregation(cp.Attributes);
}
return(cp.Aggregation.GetValue(true, vinfo.Members));
}
else
{
return(vinfo);
}
}
}