internal override CqlBlock ToCqlBlock(bool[] requiredSlots, CqlIdentifiers identifiers, ref int blockAliasNum, ref List <WithRelationship> withRelationships)
{
// Get the projected slots and the boolean expressions
int totalSlots = requiredSlots.Length;
CellQuery cellQuery = LeftCellWrapper.RightCellQuery;
SlotInfo[] projectedSlots = new SlotInfo[totalSlots];
Debug.Assert(cellQuery.NumProjectedSlots + cellQuery.NumBoolVars == totalSlots,
"Wrong number of projected slots in node");
Debug.Assert(cellQuery.NumProjectedSlots == ProjectedSlotMap.Count,
"Different number of slots in cell query and what we have mappings for");
// Add the regular fields
for (int i = 0; i < cellQuery.NumProjectedSlots; i++)
{
ProjectedSlot slot = cellQuery.ProjectedSlotAt(i);
// If the slot is not null, we will project it
// For extents, we say that all requiredlots are the only the
// ones that are CLR non-null. Recall that "real" nulls are
// handled by having a CellConstant.Null in ConstantSlot
if (requiredSlots[i] && slot == null)
{
MemberPath memberPath = ProjectedSlotMap[i];
ConstantProjectedSlot defaultValue = new ConstantProjectedSlot(Domain.GetDefaultValueForMemberPath(memberPath, GetLeaves(), ViewgenContext.Config), memberPath);
cellQuery.FixMissingSlotAsDefaultConstant(i, defaultValue);
slot = defaultValue;
}
SlotInfo slotInfo = new SlotInfo(requiredSlots[i], slot != null,
slot, ProjectedSlotMap[i]);
projectedSlots[i] = slotInfo;
}
// Add the boolean fields
for (int boolNum = 0; boolNum < cellQuery.NumBoolVars; boolNum++)
{
BoolExpression expr = cellQuery.GetBoolVar(boolNum);
BooleanProjectedSlot boolSlot;
if (expr != null)
{
boolSlot = new BooleanProjectedSlot(expr, identifiers, boolNum);
}
else
{
boolSlot = new BooleanProjectedSlot(BoolExpression.False, identifiers, boolNum);
}
int slotIndex = BoolIndexToSlot(boolNum);
SlotInfo slotInfo = new SlotInfo(requiredSlots[slotIndex], expr != null,
boolSlot, null);
projectedSlots[slotIndex] = slotInfo;
}
// See if we are generating a query view and whether there are any colocated foreign keys for which
// we have to add With statements.
IEnumerable <SlotInfo> totalProjectedSlots = projectedSlots;
if ((cellQuery.Extent.EntityContainer.DataSpace == DataSpace.SSpace) &&
(this.m_cellWrapper.LeftExtent.BuiltInTypeKind == BuiltInTypeKind.EntitySet))
{
IEnumerable <StorageAssociationSetMapping> associationSetMaps =
this.ViewgenContext.EntityContainerMapping.GetRelationshipSetMappingsFor(this.m_cellWrapper.LeftExtent, cellQuery.Extent);
List <SlotInfo> foreignKeySlots = new List <SlotInfo>();
foreach (StorageAssociationSetMapping colocatedAssociationSetMap in associationSetMaps)
{
WithRelationship withRelationship;
if (TryGetWithRelationship(colocatedAssociationSetMap, this.m_cellWrapper.LeftExtent, cellQuery.SourceExtentMemberPath, ref foreignKeySlots, out withRelationship))
{
withRelationships.Add(withRelationship);
totalProjectedSlots = projectedSlots.Concat(foreignKeySlots);
}
}
}
ExtentCqlBlock result = new ExtentCqlBlock(cellQuery.Extent, cellQuery.SelectDistinctFlag, totalProjectedSlots.ToArray(),
cellQuery.WhereClause, identifiers, ++blockAliasNum);
return(result);
}
