Take the following pseudocode database
table Foo
{
FooID int not null,
name varchar not null
}
table Bar
{
BarID int not null,
name varchar not null
}
table Waa
{
WaaID int not null,
name varchar not null
}
table Link
{
LinkID int not null,
FooID int null,
BarID int null,
WaaID int null,
Description varchar not null
}
The purpose of the Link table is to allow me to link entities together in a single table, without having multiple Foo_Bar_Link
, Foo_Waa_Link
etc. tables.
I am moddeling this DB in EntityFramework v5. As such, i want to be able to specify a One to Many relationship between Foo
and Link
, so that i can get all the Links associated with a given Foo.
Problem
EntityFramework Designer only lets one-many relationships exist where the foreign key is not null. I want a Foo to have a navigation property Associations
which gets all of the Association
entities with FooID = Foo.FooID
. As a note, i am using the Designer.
EF is not designed to support unusual models like yours. The only way which I know is to insert "empty" meaning rows for example with id equals to -1
. In business logics or in DTO implement "clever" getter and setter.
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