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M2_Single_M1_Multiple.Unlink (
A_Instance => B_Instance,
B_Instance => A_Instance);
end Unlink;
-----------------------------------------------------------------------
procedure Navigate (
From : in Root_Object.Object_List.List_Header_Access_Type;
Class : in Ada.Tags.Tag;
To : in Root_Object.Object_List.List_Header_Access_Type) is
The_A_Instance: Root_Object.Object_Access;
begin
The_A_Instance := Root_Object.Object_List.First_Entry_Of (From).Item;
if The_A_Instance /= null then
if The_A_Instance.all'tag = M1_Side then
M1_Single_M2_Multiple.Navigate (
From => From,
Class => Class,
To => To);
elsif The_A_Instance.all'tag = M2_Side then
M2_Single_M1_Multiple.Navigate (
From => From,
Class => Class,
To => To);
elsif The_A_Instance.all'tag = Associative_Side then
if Class = M2_Side then
M1_Single_M2_Multiple.Navigate (
From => From,
Class => Class,
To => To);
elsif Class = M1_Side then
M2_Single_M1_Multiple.Navigate (
From => From,
Class => Class,
To => To);
end if;
end if;
end if;
end Navigate;
---------------------------------------------------------------------
procedure Navigate (
From : in Root_Object.Object_Access;
Class : in Ada.Tags.Tag;
To : in Root_Object.Object_List.List_Header_Access_Type) is
--
-- navigate from a single to a set
-- valid for:
-- M1 -> M2
-- M1 -> A
-- M2 -> M1
-- M2 -> A
--
begin
if From.all'tag = M1_Side then
M1_Single_M2_Multiple.Navigate (
From => From,
Class => Class,
To => To);
elsif From.all'tag = M2_Side then
M2_Single_M1_Multiple.Navigate (
From => From,
Class => Class,
To => To);
elsif From.all'tag = Associative_Side then
if Class = M2_Side then
M1_Single_M2_Multiple.Navigate (
From => From,
Class => Class,
To => To);