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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.DataDefinition.Table.Create;
interface
uses
Boolean,
Collection.List,
Sql.Expression,
Sql.Statement.DataDefinition.Table,
Sql.Statement.ResultSet.Select,
Sql.Table.Column,
Sql.Table.Index,
Sql.Table.Physical,
Text;
type
TSqlCreateTableModifier = (ctmTemporary);
TSqlCreateTableModifiers = set of TSqlCreateTableModifier;
TSqlCreateTableSpecification = class(TSqlExpression)
public
function Copy(): TSqlExpression; override;
function CopyCreateTableSpecification(): TSqlCreateTableSpecification; virtual; abstract;
function ContainsStructuredColumn(): TBoolean; virtual; abstract;
end;
TSqlCreateColumn = class(TSqlCreateTableSpecification)
private
FColumn: TSqlTableColumn;
procedure SetColumn(const Value: TSqlTableColumn);
public
constructor Create(Column: TSqlTableColumn); reintroduce; virtual;
destructor Destroy(); override;
function CopyCreateTableSpecification(): TSqlCreateTableSpecification; override;
function CopyCreateColumn(): TSqlCreateColumn;
function ContainsStructuredColumn(): TBoolean; override;
property Column: TSqlTableColumn read FColumn write SetColumn;
end;
TSqlCreateKey = class(TSqlCreateTableSpecification)
public
Key: TSqlTableKey;
constructor Create(Key: TSqlTableKey); reintroduce; virtual;
function CopyCreateTableSpecification(): TSqlCreateTableSpecification; override;
function CopyCreateKey(): TSqlCreateKey;
function ContainsStructuredColumn(): TBoolean; override;
end;
TSqlCreateTable = class(TSqlTableDefinitionStatement)
private
FTable: TSqlPhysicalTable;
FModifiers: TSqlCreateTableModifiers;
FSpecifications: TList<TSqlCreateTableSpecification>;
FSelect: TSqlSelect;
procedure SetSelect(const Value: TSqlSelect);
function GetIdentifier(): TText;
public
constructor Create(Table: TSqlPhysicalTable; Modifiers: TSqlCreateTableModifiers = []); reintroduce; virtual;
destructor Destroy(); override;
function CopyTableDefinitionStatement(): TSqlTableDefinitionStatement; override;
function CopyCreateTable(): TSqlCreateTable;
property Table: TSqlPhysicalTable read FTable;
property Modifiers: TSqlCreateTableModifiers read FModifiers;
property Specifications: TList<TSqlCreateTableSpecification> read FSpecifications;
property Select: TSqlSelect read FSelect write SetSelect;
property Identifier: TText read GetIdentifier;
end;
implementation
uses
Object_.List,
Object_.Reference.Counter,
Type_.Structured;
{ TSqlCreateTable }
function TSqlCreateTable.CopyCreateTable(): TSqlCreateTable;
var
Specification: TSqlCreateTableSpecification;
begin
Result := TSqlCreateTable.Create(Table, Modifiers);
for Specification in Specifications do
Result.Specifications.Add(Specification.CopyCreateTableSpecification());
if Select <> nil then
Result.Select := Select.CopySelect();
end;
function TSqlCreateTable.CopyTableDefinitionStatement(): TSqlTableDefinitionStatement;
begin
Result := CopyCreateTable();
end;
constructor TSqlCreateTable.Create(Table: TSqlPhysicalTable; Modifiers: TSqlCreateTableModifiers = []);
begin
inherited Create();
FTable := Table;
FModifiers := Modifiers;
FSpecifications := TObjectList<TSqlCreateTableSpecification>.Create();
FSpecifications.ElementManager := TReferenceCounter<TSqlCreateTableSpecification>.Create();
end;
destructor TSqlCreateTable.Destroy();
begin
Specifications.Free();
Select.ReleaseReference();
inherited Destroy();
end;
function TSqlCreateTable.GetIdentifier(): TText;
begin
Result := Table.Identifier;
end;
procedure TSqlCreateTable.SetSelect(const Value: TSqlSelect);
begin
if Value <> Select then
begin
Value.AddReference();
Select.ReleaseReference();
FSelect := Value;
end;
end;
{ TSqlCreateTableSpecification }
function TSqlCreateTableSpecification.Copy(): TSqlExpression;
begin
Result := CopyCreateTableSpecification();
end;
{ TSqlCreateColumn }
function TSqlCreateColumn.ContainsStructuredColumn(): TBoolean;
begin
Result := Column.Type_.GetDecoratedType() is TStructuredType;
end;
function TSqlCreateColumn.CopyCreateColumn(): TSqlCreateColumn;
begin
Result := TSqlCreateColumn.Create(Column);
end;
function TSqlCreateColumn.CopyCreateTableSpecification(): TSqlCreateTableSpecification;
begin
Result := CopyCreateColumn();
end;
constructor TSqlCreateColumn.Create(Column: TSqlTableColumn);
begin
inherited Create();
Self.Column := Column;
end;
destructor TSqlCreateColumn.Destroy();
begin
Column.ReleaseReference();
inherited Destroy();
end;
procedure TSqlCreateColumn.SetColumn(const Value: TSqlTableColumn);
begin
if Value <> Column then
begin
Value.AddReference();
Column.ReleaseReference();
FColumn := Value;
end;
end;
{ TSqlCreateKey }
function TSqlCreateKey.ContainsStructuredColumn(): TBoolean;
var
Columns: TList<TSqlTableColumn>;
begin
Columns := Key.GetTableColumns();
Result := Columns.Contains(TSqlTableColumn.TIsStructured.Create());
Columns.Free();
end;
function TSqlCreateKey.CopyCreateKey(): TSqlCreateKey;
begin
Result := TSqlCreateKey.Create(Key);
end;
function TSqlCreateKey.CopyCreateTableSpecification(): TSqlCreateTableSpecification;
begin
Result := CopyCreateKey();
end;
constructor TSqlCreateKey.Create(Key: TSqlTableKey);
begin
inherited Create();
Self.Key := Key;
end;
end.
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