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| ///////////////////////////////////////////////////////////////////////////
// //
// Copyright (c) 2015 by Charta Software B.V. //
// All rights reserved //
// //
// Version: 1.7.0.83525 //
// Web site: https://pascal.chartasoftware.com/ //
// //
// This code and information are provided "as is" without warranty of //
// any kind. Dissemination of this information or reproduction of //
// this material is strictly forbidden unless prior written permission //
// is obtained from Charta Software B.V.. //
// //
///////////////////////////////////////////////////////////////////////////
unit Sql.View;
interface
uses
Sql.Exception,
Sql.Statement.ResultSet,
Sql.Table,
Text,
Type_;
type
ESqlView = class(ESql);
TSqlView = class(TSqlTable)
private
FStatement: TSqlResultSetStatement;
FType: TType;
procedure SetType(const Value: TType);
protected
function CreateType(): TType; virtual;
property Type_: TType read FType write SetType;
public
constructor Create(const Identifier: TText; Statement: TSqlResultSetStatement); reintroduce; virtual;
destructor Destroy(); override;
function GetType(): TType; override;
property Statement: TSqlResultSetStatement read FStatement;
end;
implementation
uses
Sql.Type_.Table;
{ TSqlView }
destructor TSqlView.Destroy();
begin
Statement.ReleaseReference();
Type_.ReleaseReference();
inherited Destroy();
end;
function TSqlView.GetType(): TType;
begin
Result := Type_;
end;
function TSqlView.CreateType(): TType;
var
Type_: TSqlTableType;
begin
// TODO: This is not the correct way to return the type of a view
Type_:= TSqlTableType.Create(Identifier);
Type_.Table := Self;
Result := Type_;
end;
procedure TSqlView.SetType(const Value: TType);
begin
if Value <> Type_ then
begin
Value.AddReference();
Type_.ReleaseReference();
FType := Value;
end;
end;
constructor TSqlView.Create(const Identifier: TText; Statement: TSqlResultSetStatement);
begin
inherited Create(Identifier);
FStatement := Statement;
FStatement.AddReference();
Type_ := CreateType();
end;
end.
|