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107 lines
2.8 KiB
ObjectPascal
107 lines
2.8 KiB
ObjectPascal
{-----------------------------------------------------------------------------
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Unit Name: UCMySQLDACConn
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Author: QmD
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Date: 22-nov-2004
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Purpose: MySQLDAC Support
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registered in UCMySQLDACReg.pas
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-----------------------------------------------------------------------------}
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unit UCMySQLDACConn;
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interface
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uses
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SysUtils, Classes, UCBase, DB, mySQLDbTables;
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type
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TUCMySQLDACConn = class(TUCDataConn)
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private
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FConnection : TmySQLDatabase;
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procedure SetFConnection(Value : TmySQLDatabase);
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protected
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procedure Notification(AComponent: TComponent; Operation: TOperation);override;
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public
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function GetDBObjectName : String; override;
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function GetTransObjectName : String; override;
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function UCFindDataConnection : Boolean; override;
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function UCFindTable(const Tablename : String) : Boolean; override;
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function UCGetSQLDataset(FSQL : String) : TDataset;override;
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procedure UCExecSQL(FSQL: String);override;
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published
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property Connection : TmySQLDatabase read FConnection write SetFConnection;
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end;
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implementation
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{ TUCMySQLDACConn }
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procedure TUCMySQLDACConn.SetFConnection(Value: TmySQLDatabase);
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begin
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if FConnection <> Value then FConnection := Value;
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if FConnection <> nil then FConnection.FreeNotification(Self);
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end;
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procedure TUCMySQLDACConn.Notification(AComponent: TComponent;
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Operation: TOperation);
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begin
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if (Operation = opRemove) and (AComponent = FConnection) then
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begin
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FConnection := nil;
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end;
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inherited Notification(AComponent, Operation);
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end;
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function TUCMySQLDACConn.UCFindTable(const TableName: String): Boolean;
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var
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TempList : TStringList;
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begin
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try
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TempList := TStringList.Create;
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FConnection.GetTableNames(TableName, TempList);
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TempList.Text := UpperCase(TempList.Text);
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Result := TempList.IndexOf(UpperCase(TableName)) > -1;
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finally
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FreeAndNil(TempList);
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end;
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end;
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function TUCMySQLDACConn.UCFindDataConnection: Boolean;
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begin
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Result := Assigned(FConnection) and (FConnection.Connected);
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end;
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function TUCMySQLDACConn.GetDBObjectName: String;
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begin
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if Assigned(FConnection) then
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begin
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if Owner = FConnection.Owner then Result := FConnection.Name
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else begin
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Result := FConnection.Owner.Name+'.'+FConnection.Name;
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end;
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end else Result := '';
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end;
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function TUCMySQLDACConn.GetTransObjectName: String;
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begin
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Result := '';
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end;
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procedure TUCMySQLDACConn.UCExecSQL(FSQL: String);
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begin
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FConnection.Execute(FSQL);
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end;
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function TUCMySQLDACConn.UCGetSQLDataset(FSQL: String): TDataset;
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begin
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Result := TmySQLQuery.Create(nil);
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with Result as TmySQLQuery do
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begin
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Database := FConnection;
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SQL.Text := FSQL;
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Open;
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end;
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end;
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end.
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