internal static TypeUsage ValidateNavigate(
DbExpression navigateFrom,
RelationshipEndMember fromEnd,
RelationshipEndMember toEnd,
out RelationshipType relType,
bool allowAllRelationshipsInSameTypeHierarchy)
{
ArgumentValidation.CheckMember((EdmMember)fromEnd, nameof(fromEnd));
ArgumentValidation.CheckMember((EdmMember)toEnd, nameof(toEnd));
relType = fromEnd.DeclaringType as RelationshipType;
ArgumentValidation.CheckType((EdmType)relType);
if (!relType.Equals((object)toEnd.DeclaringType))
{
throw new ArgumentException(Strings.Cqt_Factory_IncompatibleRelationEnds, nameof(toEnd));
}
ArgumentValidation.RequireCompatibleType(navigateFrom, fromEnd, allowAllRelationshipsInSameTypeHierarchy);
return(ArgumentValidation.CreateResultType(toEnd));
}