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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.Expression.Row;
interface
uses
Boolean,
Collection.List,
Sql.Expression;
type
TSqlRow = class(TSqlExpression)
public
Columns: TList<TSqlExpression>;
constructor Create(); override;
destructor Destroy(); override;
function Copy(): TSqlExpression; override;
function CopyRow(): TSqlRow;
function AggregatesRows(): TBoolean; override;
end;
implementation
uses
Integer._32,
Object_.List,
Object_.Reference.Counter;
{ TSqlRow }
function TSqlRow.AggregatesRows(): TBoolean;
begin
Result := Columns.Contains(TSqlExpression.TAggregatesRows.Instance);
end;
function TSqlRow.Copy(): TSqlExpression;
begin
Result := CopyRow();
end;
function TSqlRow.CopyRow(): TSqlRow;
var
i: TInteger32;
begin
Result := TSqlRow.Create();
for i := 0 to Columns.Count - 1 do
Result.Columns.Add(Columns[i].Copy());
end;
constructor TSqlRow.Create();
begin
inherited Create();
Columns := TObjectList<TSqlExpression>.Create();
Columns.ElementManager := TReferenceCounter<TSqlExpression>.Create();
end;
destructor TSqlRow.Destroy();
begin
Columns.Free();
Inherited Destroy();
end;
end.
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