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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.Statement.DataManipulation;
interface
uses
Byte.Block,
Collection.List,
Integer._32,
Sql.Expression,
Sql.Expression.Row,
Sql.Operator_.Assign,
Sql.Statement,
Sql.Statement.ResultSet.Select,
Sql.Table,
Sql.Table.Column,
Sql.Table.Expression,
Text;
type
TSqlInsertStatement = class(TSqlStatement)
public
Table: TSqlTable;
Columns: TList<TSqlTableColumn>;
constructor Create(Table: TSqlTable); reintroduce; virtual;
destructor Destroy(); override;
function CopyStatement(): TSqlStatement; override;
function CopyInsertStatement(): TSqlInsertStatement; virtual; abstract;
end;
TSqlInsertValuesStatement = class(TSqlInsertStatement)
public
Rows: TList<TSqlRow>;
constructor Create(Table: TSqlTable); override;
destructor Destroy(); override;
function CopyInsertStatement(): TSqlInsertStatement; override;
function CopyInsertValuesStatement(): TSqlInsertValuesStatement; virtual; abstract;
end;
TSqlInsertSelectStatement = class(TSqlInsertStatement)
private
FSelect: TSqlSelect;
procedure SetSelect(const Value: TSqlSelect);
public
constructor Create(Table: TSqlTable; Select: TSqlSelect); reintroduce; virtual;
destructor Destroy(); override;
function CopyInsertStatement(): TSqlInsertStatement; override;
function CopyInsertSelectStatement(): TSqlInsertSelectStatement; virtual; abstract;
property Select: TSqlSelect read FSelect write SetSelect;
end;
TSqlInsertValues = class(TSqlInsertValuesStatement)
public
function CopyInsertValuesStatement(): TSqlInsertValuesStatement; override;
function CopyInsertValues(): TSqlInsertValues;
end;
TSqlInsertSelect = class(TSqlInsertSelectStatement)
public
function CopyInsertSelectStatement(): TSqlInsertSelectStatement; override;
function CopyInsertSelect(): TSqlInsertSelect;
end;
TSqlReplaceValues = class(TSqlInsertValuesStatement)
public
function CopyInsertValuesStatement(): TSqlInsertValuesStatement; override;
function CopyReplaceValues(): TSqlReplaceValues;
end;
TSqlDelete = class(TSqlStatement)
public
TargetTables: TList<TSqlTable>;
ReferenceTables: TList<TSqlTableExpression>;
Restrictions: TList<TSqlExpression>;
constructor Create(); override;
destructor Destroy(); override;
function CopyStatement(): TSqlStatement; override;
function CopyDelete(): TSqlDelete;
end;
TSqlTruncate = class(TSqlStatement)
public
Table: TSqlTable;
constructor Create(Table: TSqlTable); reintroduce; virtual;
function CopyStatement(): TSqlStatement; override;
function CopyTruncate(): TSqlTruncate;
end;
TSqlUpdate = class(TSqlStatement)
public
Tables: TList<TSqlTableExpression>;
Assignments: TList<TSqlAssign>;
Restrictions: TList<TSqlExpression>;
constructor Create(); override;
destructor Destroy(); override;
function CopyStatement(): TSqlStatement; override;
function CopyUpdate(): TSqlUpdate;
function GetColumns(): TList<TSqlTableColumn>;
end;
TSqlLoadDataInfile = class(TSqlStatement)
public
FileName: TText;
Table: TSqlTable;
Data: TByteBlock;
Columns: TList<TSqlTableColumn>;
IgnoreLineCount: TInteger32;
FieldTerminator: TText;
FieldEnclosure: TText;
LineTerminator: TText;
Assignments: TList<TSqlAssign>;
constructor Create(FileName: TText; Table: TSqlTable); reintroduce; virtual;
destructor Destroy(); override;
function CopyStatement(): TSqlStatement; override;
function CopyLoadDataInfile(): TSqlLoadDataInfile;
end;
implementation
uses
Collection.List.Array_,
Object_.List,
Object_.Reference.Counter,
Reference.User;
{ TSqlInsertStatement }
function TSqlInsertStatement.CopyStatement(): TSqlStatement;
begin
Result := CopyInsertStatement();
end;
constructor TSqlInsertStatement.Create(Table: TSqlTable);
begin
inherited Create();
Self.Table := Table;
Columns := TObjectList<TSqlTableColumn>.Create();
Columns.ElementManager := TReferenceCounter<TSqlTableColumn>.Create();
end;
destructor TSqlInsertStatement.Destroy();
begin
Columns.Free();
inherited Destroy();
end;
{ TSqlInsertValuesStatement }
function TSqlInsertValuesStatement.CopyInsertStatement(): TSqlInsertStatement;
begin
Result := CopyInsertValuesStatement();
end;
constructor TSqlInsertValuesStatement.Create(Table: TSqlTable);
begin
inherited Create(Table);
Rows := TObjectList<TSqlRow>.Create();
Rows.ElementManager := TReferenceCounter<TSqlRow>.Create();
end;
destructor TSqlInsertValuesStatement.Destroy();
begin
Rows.Free();
inherited Destroy();
end;
{ TSqlInsertSelectStatement }
function TSqlInsertSelectStatement.CopyInsertStatement(): TSqlInsertStatement;
begin
Result := CopyInsertSelectStatement();
end;
constructor TSqlInsertSelectStatement.Create(Table: TSqlTable; Select: TSqlSelect);
begin
inherited Create(Table);
Self.Select := Select;
end;
destructor TSqlInsertSelectStatement.Destroy();
begin
Select.ReleaseReference();
inherited Destroy();
end;
procedure TSqlInsertSelectStatement.SetSelect(const Value: TSqlSelect);
begin
if Value <> Select then
begin
Value.AddReference();
Select.ReleaseReference();
FSelect := Value;
end;
end;
{ TSqlInsertValues }
function TSqlInsertValues.CopyInsertValues(): TSqlInsertValues;
var
Row: TSqlRow;
begin
Result := TSqlInsertValues.Create(Table);
Result.Columns.AddAll(Columns);
for Row in Rows do
Result.Rows.Add(Row.CopyRow());
end;
function TSqlInsertValues.CopyInsertValuesStatement: TSqlInsertValuesStatement;
begin
Result := CopyInsertValues();
end;
{ TSqlInsertSelect }
function TSqlInsertSelect.CopyInsertSelect(): TSqlInsertSelect;
begin
Result := TSqlInsertSelect.Create(Table, Select.CopySelect());
Result.Columns.AddAll(Columns);
end;
function TSqlInsertSelect.CopyInsertSelectStatement(): TSqlInsertSelectStatement;
begin
Result := CopyInsertSelect();
end;
{ TSqlDelete }
function TSqlDelete.CopyDelete(): TSqlDelete;
var
TableExpression: TSqlTableExpression;
Restriction: TSqlExpression;
begin
Result := TSqlDelete.Create();
Result.TargetTables.AddAll(TargetTables);
for TableExpression in ReferenceTables do
Result.ReferenceTables.Add(TableExpression.CopyTableExpression());
for Restriction in Restrictions do
Result.Restrictions.Add(Restriction.Copy());
end;
function TSqlDelete.CopyStatement(): TSqlStatement;
begin
Result := CopyDelete();
end;
constructor TSqlDelete.Create();
begin
inherited Create();
TargetTables := TObjectList<TSqlTable>.Create();
TargetTables.ElementManager := TReferenceUser<TSqlTable>.Create();
ReferenceTables := TArrayList<TSqlTableExpression>.Create();
ReferenceTables.ElementManager := TReferenceCounter<TSqlTableExpression>.Create();
Restrictions := TObjectList<TSqlExpression>.Create();
Restrictions.ElementManager := TReferenceCounter<TSqlExpression>.Create();
end;
destructor TSqlDelete.Destroy();
begin
TargetTables.Free();
ReferenceTables.Free();
Restrictions.Free();
inherited Destroy();
end;
{ TSqlUpdate }
function TSqlUpdate.CopyStatement(): TSqlStatement;
begin
Result := CopyUpdate();
end;
function TSqlUpdate.CopyUpdate(): TSqlUpdate;
var
Assignment: TSqlAssign;
Table: TSqlTableExpression;
Restriction: TSqlExpression;
begin
Result := TSqlUpdate.Create();
for Table in Tables do
Result.Tables.Add(Table.CopyTableExpression());
for Assignment in Assignments do
Result.Assignments.Add(Assignment.CopyAssign());
for Restriction in Restrictions do
Result.Restrictions.Add(Restriction.Copy());
end;
constructor TSqlUpdate.Create();
begin
inherited Create();
Tables := TArrayList<TSqlTableExpression>.Create();
Tables.ElementManager := TReferenceCounter<TSqlTableExpression>.Create();
Assignments := TObjectList<TSqlAssign>.Create();
Assignments.ElementManager := TReferenceCounter<TSqlAssign>.Create();
Restrictions := TObjectList<TSqlExpression>.Create();
Restrictions.ElementManager := TReferenceCounter<TSqlExpression>.Create()
end;
destructor TSqlUpdate.Destroy();
begin
Tables.Free();
Assignments.Free();
Restrictions.Free();
inherited Destroy();
end;
function TSqlUpdate.GetColumns(): TList<TSqlTableColumn>;
var
Assignment: TSqlAssign;
begin
Result := TObjectList<TSqlTableColumn>.Create();
Result.ElementManager := TReferenceCounter<TSqlTableColumn>.Create();
for Assignment in Assignments do
Result.Add(Assignment.Column);
end;
{ TSqlLoadDataInfile }
function TSqlLoadDataInfile.CopyLoadDataInfile(): TSqlLoadDataInfile;
var
Assignment: TSqlAssign;
begin
Result := TSqlLoadDataInfile.Create(FileName, Table);
Result.Columns.AddAll(Columns);
for Assignment in Assignments do
Result.Assignments.Add(Assignment.CopyAssign());
Result.IgnoreLineCount := IgnoreLineCount;
Result.FieldTerminator := FieldTerminator;
Result.FieldEnclosure := FieldEnclosure;
Result.LineTerminator := LineTerminator;
end;
function TSqlLoadDataInfile.CopyStatement(): TSqlStatement;
begin
Result := CopyLoadDataInfile();
end;
constructor TSqlLoadDataInfile.Create(FileName: TText; Table: TSqlTable);
begin
inherited Create();
Self.FileName := FileName;
Self.Table := Table;
Columns := TObjectList<TSqlTableColumn>.Create();
Columns.ElementManager := TReferenceCounter<TSqlTableColumn>.Create();
Assignments := TObjectList<TSqlAssign>.Create();
Assignments.ElementManager := TReferenceCounter<TSqlAssign>.Create();
end;
destructor TSqlLoadDataInfile.Destroy();
begin
Columns.Free();
Assignments.Free();
inherited Destroy();
end;
{ TSqlTruncate }
function TSqlTruncate.CopyStatement(): TSqlStatement;
begin
Result := CopyTruncate();
end;
function TSqlTruncate.CopyTruncate(): TSqlTruncate;
begin
Result := TSqlTruncate.Create(Table);
end;
constructor TSqlTruncate.Create(Table: TSqlTable);
begin
inherited Create();
Self.Table := Table;
end;
{ TSqlReplaceValues }
function TSqlReplaceValues.CopyInsertValuesStatement(): TSqlInsertValuesStatement;
begin
Result := CopyReplaceValues();
end;
function TSqlReplaceValues.CopyReplaceValues(): TSqlReplaceValues;
var
Row: TSqlRow;
begin
Result := TSqlReplaceValues.Create(Table);
Result.Columns.AddAll(Columns);
for Row in Rows do
Result.Rows.Add(Row.CopyRow());
end;
end.
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