internal static string SlotToUserString(ViewCellSlot slot, bool isFromCside)
{
MemberProjectedSlot actualSlot = isFromCside ? slot.CSlot : slot.SSlot;
string result = StringUtil.FormatInvariant("{0}", actualSlot);
return(result);
}
protected override bool IsEqualTo(ProjectedSlot right)
{
ViewCellSlot rightSlot = right as ViewCellSlot;
if (rightSlot == null)
{
return(false);
}
return(m_slotNum == rightSlot.m_slotNum &&
MemberProjectedSlot.EqualityComparer.Equals(m_cSlot, rightSlot.m_cSlot) &&
MemberProjectedSlot.EqualityComparer.Equals(m_sSlot, rightSlot.m_sSlot));
}
// effects: Propagates this constraint from the basic cell relation
// to the corresponding view cell relation and returns the new constraint
// If all the key slots are not being projected, returns null
internal ViewKeyConstraint Propagate()
{
ViewCellRelation viewCellRelation = CellRelation.ViewCellRelation;
// If all slots appear in the projection, propagate key constraint
List <ViewCellSlot> viewSlots = new List <ViewCellSlot>();
foreach (MemberProjectedSlot keySlot in KeySlots)
{
ViewCellSlot viewCellSlot = viewCellRelation.LookupViewSlot(keySlot);
if (viewCellSlot == null)
{
// Slot is missing -- no key constraint on the view relation
return(null);
}
viewSlots.Add(viewCellSlot);
}
// Create a key on view relation
ViewKeyConstraint viewKeyConstraint = new ViewKeyConstraint(viewCellRelation, viewSlots);
return(viewKeyConstraint);
}
internal static string SlotToUserString(ViewCellSlot slot, bool isFromCside)
{
MemberProjectedSlot actualSlot = isFromCside ? slot.CSlot : slot.SSlot;
string result = StringUtil.FormatInvariant("{0}", actualSlot);
return result;
}
private void GenerateCellRelations(int cellNumber)
{
// Generate the view cell relation
List<ViewCellSlot> projectedSlots = new List<ViewCellSlot>();
// construct a ViewCellSlot for each slot
Debug.Assert(CQuery.NumProjectedSlots == SQuery.NumProjectedSlots,
"Cell queries in cell have a different number of slots");
for (int i = 0; i < CQuery.NumProjectedSlots; i++)
{
ProjectedSlot cSlot = CQuery.ProjectedSlotAt(i);
ProjectedSlot sSlot = SQuery.ProjectedSlotAt(i);
Debug.Assert(cSlot != null, "Has cell query been normalized?");
Debug.Assert(sSlot != null, "Has cell query been normalized?");
// These slots better be MemberProjectedSlots. We do not have constants etc at this point.
Debug.Assert(cSlot is MemberProjectedSlot, "cSlot is expected to be MemberProjectedSlot");
Debug.Assert(sSlot is MemberProjectedSlot, "sSlot is expected to be MemberProjectedSlot");
MemberProjectedSlot cJoinSlot = (MemberProjectedSlot)cSlot;
MemberProjectedSlot sJoinSlot = (MemberProjectedSlot)sSlot;
ViewCellSlot slot = new ViewCellSlot(i, cJoinSlot, sJoinSlot);
projectedSlots.Add(slot);
}
m_viewCellRelation = new ViewCellRelation(this, projectedSlots, cellNumber);
}
