unit FetchService_Impl;

{----------------------------------------------------------------------------}
{ This unit was automatically generated by the RemObjects SDK after reading  }
{ the RODL file associated with this project .                               }
{                                                                            }
{ This is where you are supposed to code the implementation of your objects. }
{----------------------------------------------------------------------------}

{$I Remobjects.inc}

interface

uses
  {vcl:} Classes, SysUtils, 
  {RemObjects:} uROXMLIntf, uROClientIntf, uROTypes, uROServer, uROServerIntf, uROSessions,
  {Required:} uRORemoteDataModule,
  {Ancestor Implementation:} DataAbstractService_Impl,
  {Used RODLs:} DataAbstract4_Intf,
  {Generated:} FetchLibrary_Intf, uDADataStreamer, uDABin2DataStreamer,
  uDAClasses, FetchServerData, uDAInterfaces;

type
  { TFetchService }
  TFetchService = class(TDataAbstractService, IFetchService)
    DataStreamer: TDABin2DataStreamer;
    Schema: TDASchema;
  private
  protected
    { IFetchService methods }
    function GetOrdersAndDetails(const StartOrderID: Integer; const EndOrderID: Integer): Binary;
  end;

implementation

{$R *.dfm}
uses
  {Generated:} FetchLibrary_Invk;

procedure Create_FetchService(out anInstance : IUnknown);
begin
  anInstance := TFetchService.Create(nil);
end;

{ FetchService }
function TFetchService.GetOrdersAndDetails(const StartOrderID: Integer; const EndOrderID: Integer): Binary;

  procedure ProcessDataset(aDataset: IDADataset);
  begin
    aDataset.ParamByName('StartingOrderID').AsInteger := StartOrderID;
    aDataset.ParamByName('EndingOrderID').AsInteger := EndOrderID;
    aDataset.Open;
    DataStreamer.WriteDataset(aDataset, [woRows], -1);
  end;

begin
  result := Binary.Create;
  DataStreamer.Initialize(result, aiWrite);
  try
    // writing orders
    ProcessDataset(Schema.NewDataset(Connection, 'Orders'));
    // writing order details
    ProcessDataset(Schema.NewDataset(Connection, 'OrderDetails'));
  finally
    DataStreamer.Finalize;
  end;
end;

initialization
  TROClassFactory.Create('FetchService', Create_FetchService, TFetchService_Invoker);

finalization

end.