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Conditional mapping with graphdiff #148
Description
I have following entities in my DbContext:
public class A
{
public A()
{
Bs = new List<B>();
}
public ICollection<B> Bs { set; get; }
}
Sometimes I Want to update a graph:
var a = dbContext.As
.AsNoTracking()
.Include(x=>x.Bs)
.firstOrDefault();
var c = new C();
a.Bs.Add(c);
var d = new D();
var e1 = new E();
var e2 = new E();
d.Es.Add(e1); //<-- added new E
d.Es.Add(e2); //<-- added new E
a.Bs.Add(d);
I want to update a with its Bs(update C,D,E too) using graphdiff:
dbContext.UpdateGraph(a,map=>map.OwnedCollection(x=>x.Bs));
It updates A, Bs, Cs, Ds, but not Es.
So I think, I need to define a conditional mapping for graphdiff, to update Es too, somethings like:
dbContext.UpdateGraph(a,map=>map.OwnedCollection(x=>x.Bs.OfType<D>(),
with =>with.OwnedCollection(t=>t.Es))
.OwnedCollection(x=>x.Bs.OfType<C>()));
Is there any way to do this job?
Activity
b9chris commentedon Mar 17, 2016
Unless I'm mistaken about what you're asking, you can do this by using 2 maps, one with the sometimes child Entities and one without.
msanaei commentedon Mar 20, 2016
Could you write this code please?