internal static FunctionScalarProperty CreateFunctionScalarPropertyInAssociationEnd(
ModificationFunction mf, Property entityProperty, NavigationProperty pointingNavProperty, Parameter parm, string version)
{
// in creating the function scalar property, we modify the AssociationEnd depending on the navigation property that is
// pointing to the actual property. If we don't have this navigation property we can't do anything.
Debug.Assert(
pointingNavProperty != null,
"We need the navigation property pointing to the property in order to create the mapping function scalar property");
if (pointingNavProperty == null)
{
throw new CannotLocateReferencedItemException();
}
Debug.Assert(pointingNavProperty.Relationship.Target != null, "Where is the Association for this navigation property?");
if (pointingNavProperty.Relationship.Target == null)
{
throw new CannotLocateReferencedItemException();
}
var assocSet = pointingNavProperty.Relationship.Target.AssociationSet;
var navPropFromEnd = pointingNavProperty.FromRole.Target;
var navPropToEnd = pointingNavProperty.ToRole.Target;
Debug.Assert(null != navPropFromEnd, "Null FromRole for pointingNavProperty " + pointingNavProperty.ToPrettyString());
Debug.Assert(null != navPropToEnd, "Null ToRole for pointingNavProperty " + pointingNavProperty.ToPrettyString());
AssociationSetEnd assocSetFromEnd = null;
AssociationSetEnd assocSetToEnd = null;
// figure which end is which
// Note: it is valid for the NavigationProperty to point to
// an EntityType in the same inheritance hierarchy
foreach (var end in assocSet.AssociationSetEnds())
{
if (end.Role.Target == navPropFromEnd)
{
Debug.Assert(
null == assocSetFromEnd,
"pointingNavProperty From End " + navPropFromEnd.ToPrettyString()
+ " matches more than 1 AssociationSetEnd for AssociationSet " + assocSet.ToPrettyString());
assocSetFromEnd = end;
}
else if (end.Role.Target == navPropToEnd)
{
Debug.Assert(
null == assocSetToEnd,
"pointingNavProperty To End " + navPropToEnd.ToPrettyString()
+ " matches more than 1 AssociationSetEnd for AssociationSet " + assocSet.ToPrettyString());
assocSetToEnd = end;
}
}
Debug.Assert(null != assocSetFromEnd, "Cannot find From end of AssociationSet " + assocSet.ToPrettyString());
Debug.Assert(null != assocSetToEnd, "Cannot find To end of AssociationSet " + assocSet.ToPrettyString());
// see if we already have this AssociationEnd
FunctionAssociationEnd fae = null;
foreach (var funcAssocEnd in mf.AssociationEnds())
{
if (funcAssocEnd.AssociationSet.Target == assocSet &&
funcAssocEnd.From.Target == assocSetFromEnd &&
funcAssocEnd.To.Target == assocSetToEnd)
{
fae = funcAssocEnd;
break;
}
}
// create the association end if needed
if (fae == null)
{
fae = new FunctionAssociationEnd(mf, null);
fae.AssociationSet.SetRefName(assocSet);
fae.From.SetRefName(assocSetFromEnd);
fae.To.SetRefName(assocSetToEnd);
mf.AddAssociationEnd(fae);
XmlModelHelper.NormalizeAndResolve(fae);
}
Debug.Assert(fae != null, "Failed to create the AssocationEnd to house this ScalarProperty");
if (fae == null)
{
throw new ParentItemCreationFailureException();
}
// create the SP inside this
return(CreateFunctionScalarPropertyCommon(fae, entityProperty, parm, version));
}