// effects: Given the cells for the extent (extentCells) along with
// the signatures (multiconstants + needed attributes) for this extent, generates
// the left cell wrappers for it extent (viewTarget indicates whether
// the view is for querying or update purposes
// Modifies m_cellWrappers to contain this list
private bool CreateLeftCellWrappers(IEnumerable <Cell> extentCells, ViewTarget viewTarget)
{
List <Cell> extentCellsList = new List <Cell>(extentCells);
List <Cell> alignedCells = AlignFields(extentCellsList, m_memberMaps.ProjectedSlotMap, viewTarget);
Debug.Assert(alignedCells.Count == extentCellsList.Count, "Cell counts disagree");
// Go through all the cells and create cell wrappers that can be used for generating the view
m_cellWrappers = new List <LeftCellWrapper>();
for (int i = 0; i < alignedCells.Count; i++)
{
Cell alignedCell = alignedCells[i];
CellQuery left = alignedCell.GetLeftQuery(viewTarget);
CellQuery right = alignedCell.GetRightQuery(viewTarget);
// Obtain the non-null projected slots into attributes
Set <MemberPath> attributes = left.GetNonNullSlots();
BoolExpression fromVariable = BoolExpression.CreateLiteral(new CellIdBoolean(m_identifiers, extentCellsList[i].CellNumber), m_memberMaps.LeftDomainMap);
FragmentQuery leftFragmentQuery = FragmentQuery.Create(fromVariable, left);
FragmentQuery rightFragmentQuery = FragmentQuery.Create(fromVariable, right);
if (viewTarget == ViewTarget.UpdateView)
{
leftFragmentQuery = m_leftFragmentQP.CreateDerivedViewBySelectingConstantAttributes(leftFragmentQuery) ?? leftFragmentQuery;
}
LeftCellWrapper leftWrapper = new LeftCellWrapper(m_viewTarget, attributes, leftFragmentQuery, left, right, m_memberMaps,
extentCellsList[i]);
m_cellWrappers.Add(leftWrapper);
}
return(true);
}
private bool CreateLeftCellWrappers(IList <Cell> extentCells, ViewTarget viewTarget)
{
List <Cell> cellList = ViewgenContext.AlignFields((IEnumerable <Cell>)extentCells, this.m_memberMaps.ProjectedSlotMap, viewTarget);
this.m_cellWrappers = new List <LeftCellWrapper>();
for (int index = 0; index < cellList.Count; ++index)
{
Cell cell = cellList[index];
CellQuery leftQuery = cell.GetLeftQuery(viewTarget);
CellQuery rightQuery = cell.GetRightQuery(viewTarget);
Set <MemberPath> nonNullSlots = leftQuery.GetNonNullSlots();
FragmentQuery fragmentQuery = FragmentQuery.Create(BoolExpression.CreateLiteral((BoolLiteral) new CellIdBoolean(this.m_identifiers, extentCells[index].CellNumber), this.m_memberMaps.LeftDomainMap), leftQuery);
if (viewTarget == ViewTarget.UpdateView)
{
fragmentQuery = this.m_leftFragmentQP.CreateDerivedViewBySelectingConstantAttributes(fragmentQuery) ?? fragmentQuery;
}
this.m_cellWrappers.Add(new LeftCellWrapper(this.m_viewTarget, nonNullSlots, fragmentQuery, leftQuery, rightQuery, this.m_memberMaps, extentCells[index]));
}
return(true);
}
