urdmmdserver.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 urdmMDServer;

interface

uses
  Windows, Messages, SysUtils, Classes, ComServ, ComObj, VCLCom, DataBkr,
  DBClient, PMDDemo_TLB, StdVcl, Db, ADODB, Provider;

type
  TmdRemoteServer = class(TRemoteDataModule, ImdRemoteServer)
    ADOConnection1: TADOConnection;
    adsDetail: TADODataSet;
    adsMain: TADODataSet;
    DataSource1: TDataSource;
    dspMD: TDataSetProvider;
    dspGeneral: TDataSetProvider;
    adsGeneral: TADODataSet;
    procedure RemoteDataModuleCreate(Sender: TObject);
    procedure RemoteDataModuleDestroy(Sender: TObject);
  private
    { Private declarations }
  protected
    class procedure UpdateRegistry(Register: Boolean; const ClassID, ProgID: string); override;
  public
    { Public declarations }
  end;

implementation

{$R *.DFM}

class procedure TmdRemoteServer.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 TmdRemoteServer.RemoteDataModuleCreate(Sender: TObject);
begin
  ADOConnection1.Connected := True;
end;

procedure TmdRemoteServer.RemoteDataModuleDestroy(Sender: TObject);
begin
  ADOConnection1.Connected := False;
end;

initialization
  TComponentFactory.Create(ComServer, TmdRemoteServer,
    Class_mdRemoteServer, ciMultiInstance, tmApartment);
end.