// requires: constraint.ChildColumns form a key in
// constraint.ChildTable (actually they should subsume the primary key)
private void GuaranteeForeignKeyConstraintInCSpace(
QueryRewriter childRewriter, QueryRewriter parentRewriter,
ErrorLog errorLog)
{
var childContext = childRewriter.ViewgenContext;
var parentContext = parentRewriter.ViewgenContext;
var cNode = childRewriter.BasicView;
var pNode = parentRewriter.BasicView;
var qp = FragmentQueryProcessor.Merge(childContext.RightFragmentQP, parentContext.RightFragmentQP);
var cImpliesP = qp.IsContainedIn(cNode.RightFragmentQuery, pNode.RightFragmentQuery);
if (false == cImpliesP)
{
// Foreign key constraint not being ensured in C-space
var childExtents = LeftCellWrapper.GetExtentListAsUserString(cNode.GetLeaves());
var parentExtents = LeftCellWrapper.GetExtentListAsUserString(pNode.GetLeaves());
var message = Strings.ViewGen_Foreign_Key_Not_Guaranteed_InCSpace(
ToUserString());
// Add all wrappers into allWrappers
var allWrappers = new Set <LeftCellWrapper>(pNode.GetLeaves());
allWrappers.AddRange(cNode.GetLeaves());
var record = new ErrorLog.Record(ViewGenErrorCode.ForeignKeyNotGuaranteedInCSpace, message, allWrappers, String.Empty);
errorLog.AddEntry(record);
}
}
// requires: constraint.ChildColumns form a key in
// constraint.ChildTable (actually they should subsume the primary key)
private void GuaranteeForeignKeyConstraintInCSpace(QueryRewriter childRewriter, QueryRewriter parentRewriter,
ErrorLog errorLog, ConfigViewGenerator config)
{
ViewgenContext childContext = childRewriter.ViewgenContext;
ViewgenContext parentContext = parentRewriter.ViewgenContext;
CellTreeNode cNode = childRewriter.BasicView;
CellTreeNode pNode = parentRewriter.BasicView;
FragmentQueryProcessor qp = FragmentQueryProcessor.Merge(childContext.RightFragmentQP, parentContext.RightFragmentQP);
bool cImpliesP = qp.IsContainedIn(cNode.RightFragmentQuery, pNode.RightFragmentQuery);
if (false == cImpliesP)
{
// Foreign key constraint not being ensured in C-space
string childExtents = LeftCellWrapper.GetExtentListAsUserString(cNode.GetLeaves());
string parentExtents = LeftCellWrapper.GetExtentListAsUserString(pNode.GetLeaves());
string message = System.Data.Entity.Strings.ViewGen_Foreign_Key_Not_Guaranteed_InCSpace(
ToUserString());
// Add all wrappers into allWrappers
Set <LeftCellWrapper> allWrappers = new Set <LeftCellWrapper>(pNode.GetLeaves());
allWrappers.AddRange(cNode.GetLeaves());
ErrorLog.Record record = new ErrorLog.Record(true, ViewGenErrorCode.ForeignKeyNotGuaranteedInCSpace, message, allWrappers, String.Empty);
errorLog.AddEntry(record);
}
}
private static bool CheckConstraintWhenOnlyParentMapped(
AssociationSet assocSet,
AssociationEndMember endMember,
QueryRewriter childRewriter,
QueryRewriter parentRewriter)
{
ViewgenContext viewgenContext1 = childRewriter.ViewgenContext;
ViewgenContext viewgenContext2 = parentRewriter.ViewgenContext;
CellTreeNode basicView = parentRewriter.BasicView;
RoleBoolean roleBoolean = new RoleBoolean(assocSet.AssociationSetEnds[endMember.Name]);
BoolExpression whereClause = basicView.RightFragmentQuery.Condition.Create((BoolLiteral)roleBoolean);
FragmentQuery q1 = FragmentQuery.Create((IEnumerable <MemberPath>)basicView.RightFragmentQuery.Attributes, whereClause);
return(FragmentQueryProcessor.Merge(viewgenContext1.RightFragmentQP, viewgenContext2.RightFragmentQP).IsContainedIn(q1, basicView.RightFragmentQuery));
}
// requires: IsForeignKeySuperSetOfPrimaryKeyInChildTable() is false
// and primaryKeys of ChildTable are not mapped in cell. cell
// corresponds to an association set. parentSet is the set
// corresponding to the end that we are looking at
// effects: Checks if the constraint is correctly maintained in
// C-space via an association set (being a subset of the
// corresponding entitySet)
private static bool CheckConstraintWhenOnlyParentMapped(
AssociationSet assocSet, AssociationEndMember endMember,
QueryRewriter childRewriter, QueryRewriter parentRewriter)
{
var childContext = childRewriter.ViewgenContext;
var parentContext = parentRewriter.ViewgenContext;
var pNode = parentRewriter.BasicView;
Debug.Assert(pNode != null);
var endRoleBoolean = new RoleBoolean(assocSet.AssociationSetEnds[endMember.Name]);
// use query in pNode as a factory to create a bool expression for the endRoleBoolean
var endCondition = pNode.RightFragmentQuery.Condition.Create(endRoleBoolean);
var cNodeQuery = FragmentQuery.Create(pNode.RightFragmentQuery.Attributes, endCondition);
var qp = FragmentQueryProcessor.Merge(childContext.RightFragmentQP, parentContext.RightFragmentQP);
var cImpliesP = qp.IsContainedIn(cNodeQuery, pNode.RightFragmentQuery);
return(cImpliesP);
}
// requires: IsForeignKeySuperSetOfPrimaryKeyInChildTable() is false
// and primaryKeys of ChildTable are not mapped in cell. cell
// corresponds to an association set. parentSet is the set
// corresponding to the end that we are looking at
// effects: Checks if the constraint is correctly maintained in
// C-space via an association set (being a subset of the
// corresponding entitySet)
private bool CheckConstraintWhenOnlyParentMapped(Cell cell, EntitySet parentSet, AssociationSet assocSet, AssociationEndMember endMember,
QueryRewriter childRewriter, QueryRewriter parentRewriter,
ConfigViewGenerator config)
{
ViewgenContext childContext = childRewriter.ViewgenContext;
ViewgenContext parentContext = parentRewriter.ViewgenContext;
CellTreeNode pNode = parentRewriter.BasicView;
Debug.Assert(pNode != null);
RoleBoolean endRoleBoolean = new RoleBoolean(assocSet.AssociationSetEnds[endMember.Name]);
// use query in pNode as a factory to create a bool expression for the endRoleBoolean
BoolExpression endCondition = pNode.RightFragmentQuery.Condition.Create(endRoleBoolean);
FragmentQuery cNodeQuery = FragmentQuery.Create(pNode.RightFragmentQuery.Attributes, endCondition);
FragmentQueryProcessor qp = FragmentQueryProcessor.Merge(childContext.RightFragmentQP, parentContext.RightFragmentQP);
bool cImpliesP = qp.IsContainedIn(cNodeQuery, pNode.RightFragmentQuery);
return(cImpliesP);
}
private void GuaranteeForeignKeyConstraintInCSpace(
QueryRewriter childRewriter,
QueryRewriter parentRewriter,
ErrorLog errorLog)
{
ViewgenContext viewgenContext1 = childRewriter.ViewgenContext;
ViewgenContext viewgenContext2 = parentRewriter.ViewgenContext;
CellTreeNode basicView1 = childRewriter.BasicView;
CellTreeNode basicView2 = parentRewriter.BasicView;
if (FragmentQueryProcessor.Merge(viewgenContext1.RightFragmentQP, viewgenContext2.RightFragmentQP).IsContainedIn(basicView1.RightFragmentQuery, basicView2.RightFragmentQuery))
{
return;
}
LeftCellWrapper.GetExtentListAsUserString((IEnumerable <LeftCellWrapper>)basicView1.GetLeaves());
LeftCellWrapper.GetExtentListAsUserString((IEnumerable <LeftCellWrapper>)basicView2.GetLeaves());
string message = Strings.ViewGen_Foreign_Key_Not_Guaranteed_InCSpace((object)this.ToUserString());
Set <LeftCellWrapper> set = new Set <LeftCellWrapper>((IEnumerable <LeftCellWrapper>)basicView2.GetLeaves());
set.AddRange((IEnumerable <LeftCellWrapper>)basicView1.GetLeaves());
ErrorLog.Record record = new ErrorLog.Record(ViewGenErrorCode.ForeignKeyNotGuaranteedInCSpace, message, (IEnumerable <LeftCellWrapper>)set, string.Empty);
errorLog.AddEntry(record);
}
