/usr/share/ada/adainclude/gnatcoll/gnatcoll-sql-orm-impl.adb is in libgnatcoll1.6-dev 1.6gpl2014-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- CRM --
-- [Customer Relationship Management] --
-- --
-- Copyright (C) 2009-2014, AdaCore --
------------------------------------------------------------------------------
with GNAT.Calendar; use GNAT.Calendar;
with GNATCOLL.Traces; use GNATCOLL.Traces;
package body GNATCOLL.SQL.Orm.Impl is
Me : constant Trace_Handle := Create ("ORM");
function Get_Data
(Self : Forward_Cursor'Class) return Shared_List_Data_Access;
pragma Inline (Get_Data);
-- Return access to the data used by a list. The returned access is only
-- valid while the list exists.
-------------
-- Is_Null --
-------------
function Is_Null (Self : Orm_Element) return Boolean is
begin
return Self.Index = -1;
end Is_Null;
--------------
-- Get_Data --
--------------
function Get_Data
(Self : Forward_Cursor'Class) return Shared_List_Data_Access is
begin
-- Not very elegant, but this avoids duplicating this function for
-- both types of lists in all the generated packages.
-- The Unchecked_Access is safe because tagged types are always passed
-- by reference (ARM)
if Self in Forward_List'Class then
return Forward_List (Self).Data'Unchecked_Access;
elsif Self in Direct_List'Class then
return Direct_List (Self).Data'Unchecked_Access;
else
return null;
end if;
end Get_Data;
-------------------
-- Integer_Value --
-------------------
function Integer_Value
(Self : Orm_Element'Class; Field : Field_Index) return Integer is
begin
if Current (Self.Current) /= Self.Index then
raise Cursor_Has_Moved;
end if;
if Is_Null (Self.Current, Self.Column + Field) then
return Integer'First;
else
return Integer_Value (Self.Current, Self.Column + Field);
end if;
end Integer_Value;
-------------------
-- Boolean_Value --
-------------------
function Boolean_Value
(Self : Orm_Element'Class; Field : Field_Index) return Boolean is
begin
if Current (Self.Current) /= Self.Index then
raise Cursor_Has_Moved;
end if;
if Is_Null (Self.Current, Self.Column + Field) then
return False;
else
return Boolean_Value (Self.Current, Self.Column + Field);
end if;
end Boolean_Value;
-------------------
-- String_Value --
-------------------
function String_Value
(Self : Orm_Element'Class; Field : Field_Index) return String is
begin
if Current (Self.Current) /= Self.Index then
raise Cursor_Has_Moved;
end if;
if Is_Null (Self.Current, Self.Column + Field) then
return "";
else
return Value (Self.Current, Self.Column + Field);
end if;
end String_Value;
------------------
-- String_Value --
------------------
function String_Value
(Self : Orm_Element'Class; Field : Field_Index)
return Unbounded_String is
begin
return To_Unbounded_String (String_Value (Self, Field));
end String_Value;
----------------
-- Time_Value --
----------------
function Time_Value
(Self : Orm_Element'Class; Field : Field_Index) return Ada.Calendar.Time
is
begin
if Current (Self.Current) /= Self.Index then
raise Cursor_Has_Moved;
end if;
if Is_Null (Self.Current, Self.Column + Field) then
return No_Time;
else
return Time_Value (Self.Current, Self.Column + Field);
end if;
end Time_Value;
-----------------
-- Float_Value --
------------------
function Float_Value
(Self : Orm_Element'Class; Field : Field_Index) return Float is
begin
if Current (Self.Current) /= Self.Index then
raise Cursor_Has_Moved;
end if;
if Is_Null (Self.Current, Self.Column + Field) then
return Float'First;
else
return Float_Value (Self.Current, Self.Column + Field);
end if;
end Float_Value;
-----------------
-- Money_Value --
-----------------
function Money_Value
(Self : Orm_Element'Class; Field : Field_Index)
return T_Money is
begin
if Current (Self.Current) /= Self.Index then
raise Cursor_Has_Moved;
end if;
if Is_Null (Self.Current, Self.Column + Field) then
return T_Money'First;
else
return Money_Value (Self.Current, Self.Column + Field);
end if;
end Money_Value;
----------------------
-- Generic_Managers --
----------------------
package body Generic_Managers is
function Internal_Element
(Self : Forward_Cursor'Class;
Column : Field_Index;
Data : Shared_List_Data;
Depth : Natural) return Element_Type;
pragma Inline (Internal_Element);
----------------------
-- Internal_Element --
----------------------
function Internal_Element
(Self : Forward_Cursor'Class;
Column : Field_Index;
Data : Shared_List_Data;
Depth : Natural) return Element_Type
is
begin
return Result : Element_Type do
Result.Index := Current (Self);
Result.Column := Column;
Result.Depth := Depth;
Result.Data := Data;
Result.Current := Forward_Cursor (Self);
end return;
end Internal_Element;
----------------------
-- Internal_Element --
----------------------
function Internal_Element
(Self : Orm_Element'Class;
Field : Field_Index) return Element_Type is
begin
return Internal_Element
(Self.Current, Self.Column + Field, Self.Data, Self.Depth - 1);
end Internal_Element;
-------------
-- Element --
-------------
function Element
(Self : List'Class) return Element_Type
is
Data : constant Shared_List_Data_Access := Get_Data (Self);
begin
Assert (Me, Data /= null, "No data stored in list of elements");
Assert
(Me, Data.Session /= No_Session, "Session from list was released");
return Internal_Element (Self, 0, Get_Data (Self).all, Self.Depth);
end Element;
-------------
-- Element --
-------------
function Element
(Self : Direct_List'Class) return Element_Type
is
begin
return Internal_Element (Self, 0, Get_Data (Self).all, Self.Depth);
end Element;
-----------------
-- Build_Query --
-----------------
function Build_Query
(Self : Manager_Type'Class;
Override_Fields : SQL_Field_List := Empty_Field_List)
return SQL_Query
is
Q : SQL_Query;
F : SQL_Field_List;
T : SQL_Table_List;
C : SQL_Criteria := No_Criteria;
begin
Internal_Query (F, T, C, Self.Select_Related, Self.Follow_LJ);
if Override_Fields /= Empty_Field_List then
F := Override_Fields;
end if;
Query (Self, Q, F, T, C);
return Q;
end Build_Query;
------------------
-- Build_Delete --
------------------
function Build_Delete (Self : Manager_Type'Class) return SQL_Query is
Q : SQL_Query;
F : SQL_Field_List;
T : SQL_Table_List;
C : SQL_Criteria := No_Criteria;
begin
Internal_Query
(Fields => F,
From => T,
Criteria => C,
PK_Only => True,
Depth => 0, -- Never select related
Follow_LJ => False);
Query (Self, Q, F, T, C);
Q := SQL_Delete
(From => Table_Type,
Where => SQL_In (Tuple (F), Q));
Auto_Complete (Q);
return Q;
end Build_Delete;
---------
-- Get --
---------
function Get
(Self : Manager'Class;
Session : Session_Type;
Params : SQL_Parameters := No_Parameters) return List
is
Result : List;
begin
Result.Data := (Session => Session, Follow_LJ => Self.Follow_LJ);
Result.Depth := Select_Related (Self);
if Session.Flush_Before_Query then
Session.Flush;
end if;
Result.Fetch (Session.DB, Build_Query (Self), Params);
return Result;
end Get;
---------
-- Get --
---------
function Get
(Query : String;
Session : Session_Type;
Params : SQL_Parameters := No_Parameters;
Related : Related_Depth := 0;
Follow_LJ : Boolean := False) return List
is
Result : List;
begin
Result.Data := (Session => Session, Follow_LJ => Follow_LJ);
Result.Depth := Integer (Related);
if Session.Flush_Before_Query then
Session.Flush;
end if;
Result.Fetch (Session.DB, Query, Params);
return Result;
end Get;
------------
-- Delete --
------------
procedure Delete (Self : Manager'Class; Session : Session_Type) is
begin
Execute (Session.DB, Build_Delete (Self));
end Delete;
-------------
-- Prepare --
-------------
function Prepare
(Self : Manager'Class;
Use_Cache : Boolean := False;
On_Server : Boolean := False;
Name : String := "") return ORM_Prepared_Statement
is
begin
return ORM_Prepared_Statement'
(Related => Related_Depth (Select_Related (Self)),
Follow_LJ => Self.Follow_LJ,
Stmt => Prepare
(Build_Query (Self),
Name => Name,
Use_Cache => Use_Cache,
On_Server => On_Server));
end Prepare;
----------------
-- Get_Direct --
----------------
function Get_Direct
(Self : Manager'Class;
Session : Session_Type;
Params : SQL_Parameters := No_Parameters) return Direct_List
is
Result : Direct_List;
begin
Result.Data := (Session => Session, Follow_LJ => Self.Follow_LJ);
Result.Depth := Select_Related (Self);
if Session.Flush_Before_Query then
Session.Flush;
end if;
Result.Fetch (Session.DB, Build_Query (Self), Params => Params);
return Result;
end Get_Direct;
---------
-- Get --
---------
function Get
(Query : ORM_Prepared_Statement'Class;
Session : Session_Type;
Params : SQL_Parameters := No_Parameters) return List
is
Result : List;
begin
Result.Data := (Session => Session, Follow_LJ => Query.Follow_LJ);
Result.Depth := Integer (Query.Related);
if Session.Flush_Before_Query then
Session.Flush;
end if;
Result.Fetch (Session.DB, Query.Stmt, Params);
return Result;
end Get;
----------------
-- Get_Direct --
----------------
function Get_Direct
(Query : ORM_Prepared_Statement'Class;
Session : Session_Type;
Params : SQL_Parameters := No_Parameters) return Direct_List
is
Result : Direct_List;
begin
Result.Data := (Session => Session, Follow_LJ => Query.Follow_LJ);
Result.Depth := Integer (Query.Related);
if Session.Flush_Before_Query then
Session.Flush;
end if;
Result.Fetch (Session.DB, Query.Stmt, Params => Params);
return Result;
end Get_Direct;
--------------
-- Distinct --
--------------
function Distinct (Self : Manager) return Manager
is
Result : Manager := Self;
begin
Distinct (Result);
return Result;
end Distinct;
------------
-- Filter --
------------
function Filter
(Self : Manager; Condition : SQL_Criteria) return Manager
is
Result : Manager;
begin
-- Bug in GNAT, maybe: "Result := Self" results in a corruption
-- in the reference counting of the criteria. The workaround is
-- to do an explicit copy.
Copy (Self, Into => Result);
Filter (Result, Condition);
return Result;
end Filter;
-----------
-- Limit --
-----------
function Limit
(Self : Manager;
Count : Natural;
From : Natural := 0) return Manager
is
Result : Manager := Self;
begin
Limit (Result, Count, From);
return Result;
end Limit;
--------------
-- Order_By --
--------------
function Order_By
(Self : Manager;
By : SQL_Field_List) return Manager
is
Result : Manager := Self;
begin
GNATCOLL.SQL.Orm.Order_By (Result, By);
return Result;
end Order_By;
--------------
-- Order_By --
--------------
function Order_By
(Self : Manager; By : SQL_Field'Class) return Manager
is
Result : Manager := Self;
begin
GNATCOLL.SQL.Orm.Order_By (Result, +By);
return Result;
end Order_By;
--------------------
-- Select_Related --
--------------------
function Select_Related
(Self : Manager;
Depth : Related_Depth;
Follow_Left_Join : Boolean := False) return Manager
is
Result : Manager := Self;
begin
Select_Related (Result, Integer (Depth), Follow_Left_Join);
return Result;
end Select_Related;
end Generic_Managers;
end GNATCOLL.SQL.Orm.Impl;
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