Published
Monday, August 27, 2007 3:57 PM
by
mtaulty
Returning back to that list that I talked about in a previous post, we had
ANYELEMENT,CREATEREF, DEREF, IS OF, KEY, MULTISET, NAVIGATE, OFTYPE, OVERLAPS, Projection (including here as I've not yet figured out what it is :-)), REF, ROW , SELECT (including here because it has some weirdness like VALUE), SET, TREAT, USING
For this post, let's take a look at;
USING
This is a funny one. It's a way of introducing namespaces just like in C#.
So, if I want to construct an instance of my Northwind.Shippers entity (Northwind being the namespace that's defined in my CSDL file) then I can do;
Northwind.Shippers(1, 'Acme', '123 456 789')
and the USING statement can make that more compact for me by allowing me to do;
Using Northwind;
Shippers(1, 'Acme', '123 456 789')
and, kind of like C#, I can also define aliases such as;
Using x=Northwind;
x.Shippers(1, 'Acme', '123 456 789')
but, as far as I can tell, you can't do this kind of trick;
Using myShipper=Northwind.Shippers;
myShipper(1, 'Acme', '123 456 789')
but that doesn't seem like the end of the world :-)