public static EDocumentInvalidation CanInvalidateDocument(this IMultiplicityChange multiplicityChange)
{
// NL ol ou NU
if (multiplicityChange.NewLower <= multiplicityChange.OldLower &&
multiplicityChange.OldUpper <= multiplicityChange.NewUpper)
{
return(EDocumentInvalidation.None);
}
// ol NL ou NU (some items may need to be genereated)
if (multiplicityChange.OldLower <= multiplicityChange.NewLower &&
multiplicityChange.OldUpper <= multiplicityChange.NewUpper)
{
return(EDocumentInvalidation.Possible);
}
// ol NL NU ou (items may need to be add and/or deleted)
if (multiplicityChange.OldLower <= multiplicityChange.NewLower &&
multiplicityChange.NewUpper <= multiplicityChange.OldUpper)
{
return(EDocumentInvalidation.Possible);
}
// NL ol NU ou (items may need to be deleted)
if (multiplicityChange.NewLower <= multiplicityChange.OldLower &&
multiplicityChange.NewUpper <= multiplicityChange.OldUpper)
{
return(EDocumentInvalidation.Possible);
}
// ol ou NL NU (items must be generated)
// NL NU ol ou (items must be removed)
return(EDocumentInvalidation.Certain);
}
public static bool CanRequireDeleting(this IMultiplicityChange multiplicityChange)
{
if (multiplicityChange.NewUpper.IsInfinity && multiplicityChange.OldUpper.IsInfinity)
{
return(false);
}
return(multiplicityChange.NewUpper < multiplicityChange.OldUpper);
}
public static bool WasOptionalIsMandatory(this IMultiplicityChange multiplicityChange)
{
return(multiplicityChange.OldLower == 0 && multiplicityChange.NewLower == 1);
}
public static bool CanRequireGenerating(this IMultiplicityChange multiplicityChange)
{
// ol NL ou NU (some items may need to be genereated)
return(multiplicityChange.OldLower < multiplicityChange.NewLower);
}
