urdmtestmidas.pas

就是这本书的随书代码。包括《实战Delphi 5.x-分布式多层应用系统篇》

unit urdmTestMidas;

interface

uses
  Windows, Messages, SysUtils, Classes, ComServ, ComObj, VCLCom, DataBkr,
  DBClient, PTestMidas_TLB, StdVcl, Db, DBTables, Provider, Dialogs;

type
  TTestMidasServer = class(TRemoteDataModule, ITestMidasServer)
    Database1: TDatabase;
    Table1: TTable;
    DataSetProvider1: TDataSetProvider;
    procedure DataSetProvider1UpdateData(Sender: TObject;
      DataSet: TClientDataSet);
    procedure DataSetProvider1UpdateError(Sender: TObject;
      DataSet: TClientDataSet; E: EUpdateError; UpdateKind: TUpdateKind;
      var Response: TResolverResponse);
  private
    { Private declarations }
  protected
    class procedure UpdateRegistry(Register: Boolean; const ClassID, ProgID: string); override;
  public
    { Public declarations }
  end;

implementation

uses fTestMidasServerMain;

{$R *.DFM}

class procedure TTestMidasServer.UpdateRegistry(Register: Boolean; const ClassID, ProgID: string);
begin
  if Register then
  begin
    inherited UpdateRegistry(Register, ClassID, ProgID);
    EnableSocketTransport(ClassID);
    EnableWebTransport(ClassID);
  end else
  begin
    DisableSocketTransport(ClassID);
    DisableWebTransport(ClassID);
    inherited UpdateRegistry(Register, ClassID, ProgID);
  end;
end;

procedure TTestMidasServer.DataSetProvider1UpdateData(Sender: TObject;
  DataSet: TClientDataSet);
begin
  Form1.ClientDataSet1.Data := DataSet.Data;
end;

procedure TTestMidasServer.DataSetProvider1UpdateError(Sender: TObject;
  DataSet: TClientDataSet; E: EUpdateError; UpdateKind: TUpdateKind;
  var Response: TResolverResponse);
begin
  ShowMessage(DataSet.FieldByName('LastName').CurValue);
end;

initialization
  TComponentFactory.Create(ComServer, TTestMidasServer,
    Class_TestMidasServer, ciMultiInstance, tmApartment);
end.