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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.Type_.Table;
interface
uses
Boolean,
Sql.Table,
Sql.Type_,
Type_;
type
TSqlTableType = class(TSqlType)
protected
FTable: TSqlTable;
procedure SetViewPrimaryKey(); override;
public
OwnsTable: TBoolean;
destructor Destroy(); override;
function IsEquivalentTo(OtherType: TType): TBoolean; override;
function IsSupertypeOf(OtherType: TType): TBoolean; override;
function GetStorageType(): TStorageType; override;
property Table: TSqlTable read FTable write FTable;
end;
implementation
uses
Exception,
Integer._32,
Sql.Table.Column,
Sql.Table.Index.Column,
Sql.Type_.Table.Restricted;
{ TSqlTableType }
destructor TSqlTableType.Destroy();
begin
if OwnsTable then
Table.Free();
inherited Destroy();
end;
function TSqlTableType.GetStorageType(): TStorageType;
begin
if (Table.PrimaryKey <> nil) and (
(
Table.PrimaryKey.Columns.Count = 1)
or ((Table.PrimaryKey.Columns.Count = 2) and (Table.Lifetime <> nil))
or ((Table.PrimaryKey.Columns.Count = 2) and Table.IsBranching)
)
then
Result := Table.PrimaryKey.Columns[0].Column.Type_.GetStorageType()
else
raise EException.Create('Cannot determine storage type for table: ' + Table.Identifier);
end;
function TSqlTableType.IsEquivalentTo(OtherType: TType): TBoolean;
begin
Result := (OtherType is TSqlTableType) and ((OtherType as TSqlTableType).Table = Table);
end;
function TSqlTableType.IsSupertypeOf(OtherType: TType): TBoolean;
begin
Result :=
inherited IsSupertypeOf(OtherType)
or ((OtherType is TSqlRestrictedTableType) and IsEquivalentTo((OtherType as TSqlRestrictedTableType).TableType));
end;
procedure TSqlTableType.SetViewPrimaryKey();
var
PrimaryKey: array of TSqlTableIndexColumn;
KeyColumn: TSqlTableIndexColumn;
i: TInteger32;
begin
if Table.PrimaryKey <> nil then
begin
SetLength(PrimaryKey, Table.PrimaryKey.Columns.Count);
for i := 0 to Table.PrimaryKey.Columns.Count - 1 do
begin
KeyColumn := TSqlTableIndexColumn.Create();
KeyColumn.Column := View.Columns.Find(TSqlTableColumn.THasIdentifier.Create(Table.PrimaryKey.Columns[i].Column.Identifier));
PrimaryKey[i] := KeyColumn;
end;
View.SetPrimaryKey(PrimaryKey);
end;
end;
end.
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