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end Load;
procedure Save (Object : in out Snapshot_Impl;
Session : in out ADO.Sessions.Master_Session'Class) is
Stmt : ADO.Statements.Update_Statement
:= Session.Create_Statement (SNAPSHOT_DEF'Access);
begin
if Object.Is_Modified (1) then
Stmt.Save_Field (Name => COL_0_1_NAME, -- id
Value => Object.Get_Key);
Object.Clear_Modified (1);
end if;
if Object.Is_Modified (2) then
Stmt.Save_Field (Name => COL_1_1_NAME, -- start_date
Value => Object.Start_Date);
Object.Clear_Modified (2);
end if;
if Object.Is_Modified (3) then
Stmt.Save_Field (Name => COL_2_1_NAME, -- end_date
Value => Object.End_Date);
Object.Clear_Modified (3);
end if;
if Object.Is_Modified (5) then
Stmt.Save_Field (Name => COL_4_1_NAME, -- host_id
Value => Object.Host);
Object.Clear_Modified (5);
end if;
if Stmt.Has_Save_Fields then
Object.Version := Object.Version + 1;
Stmt.Save_Field (Name => "version",
Value => Object.Version);
Stmt.Set_Filter (Filter => "id = ? and version = ?");
Stmt.Add_Param (Value => Object.Get_Key);
Stmt.Add_Param (Value => Object.Version - 1);
declare
Result : Integer;
begin
Stmt.Execute (Result);
if Result /= 1 then
if Result /= 0 then
raise ADO.Objects.UPDATE_ERROR;
else
raise ADO.Objects.LAZY_LOCK;
end if;
end if;
Function Definition: procedure List (Object : in out Snapshot_Vector;
Function Body: Session : in out ADO.Sessions.Session'Class;
Query : in ADO.SQL.Query'Class) is
Stmt : ADO.Statements.Query_Statement
:= Session.Create_Statement (Query, SNAPSHOT_DEF'Access);
begin
Stmt.Execute;
Snapshot_Vectors.Clear (Object);
while Stmt.Has_Elements loop
declare
Item : Snapshot_Ref;
Impl : constant Snapshot_Access := new Snapshot_Impl;
begin
Impl.Load (Stmt, Session);
ADO.Objects.Set_Object (Item, Impl.all'Access);
Object.Append (Item);
Function Definition: procedure Unchecked_Free is new Ada.Unchecked_Deallocation
Function Body: (Source_Impl, Source_Impl_Ptr);
pragma Warnings (Off, "*redundant conversion*");
Ptr : Source_Impl_Ptr := Source_Impl (Object.all)'Access;
pragma Warnings (On, "*redundant conversion*");
begin
Unchecked_Free (Ptr);
end Destroy;
procedure Find (Object : in out Source_Impl;
Session : in out ADO.Sessions.Session'Class;
Query : in ADO.SQL.Query'Class;
Found : out Boolean) is
Stmt : ADO.Statements.Query_Statement
:= Session.Create_Statement (Query, SOURCE_DEF'Access);
begin
Stmt.Execute;
if Stmt.Has_Elements then
Object.Load (Stmt, Session);
Stmt.Next;
Found := not Stmt.Has_Elements;
else
Found := False;
end if;
end Find;
overriding
procedure Load (Object : in out Source_Impl;
Session : in out ADO.Sessions.Session'Class) is
Found : Boolean;
Query : ADO.SQL.Query;
Id : constant ADO.Identifier := Object.Get_Key_Value;
begin
Query.Bind_Param (Position => 1, Value => Id);
Query.Set_Filter ("id = ?");
Object.Find (Session, Query, Found);
if not Found then