ucorbadmdiiserver.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 ucorbadmDIIServer;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  ComObj, VCLCom, StdVcl, DataBkr, CorbaRdm, CorbaObj,
  PDIIServer_TLB, Provider, Db, DBTables;

type

  TCORBADIIServer = class(TCorbaDataModule, ICORBADIIServer)
    Session1: TSession;
    Database1: TDatabase;
    Query1: TQuery;
    quryEmployees: TQuery;
    DataSetProvider1: TDataSetProvider;
  private
    { Private declarations }
  public
    { Public declarations }
  protected
    function Employees: OleVariant; safecall;
  end;

var
  CORBADIIServer: TCORBADIIServer;

implementation

{$R *.DFM}

uses CorbInit, CorbaVcl;

function TCORBADIIServer.Employees: OleVariant;
var
  iCount : Integer;
begin
  try
    quryEmployees.Close;
    quryEmployees.Open;
    Result := VarArrayCreate([0, quryEmployees.RecordCount - 1], varVariant);
    iCount := 0;
    while not quryEmployees.Eof do
    begin
      Result[iCount] := quryEmployees.Fields[0].Value;
      Inc(iCount);
      quryEmployees.Next;
    end;
  finally
    quryEmployees.Close;
  end;
end;

initialization
  TCorbaVclComponentFactory.Create('CORBADIIServerFactory', 'CORBADIIServer', 'IDL:PDIIServer/CORBADIIServerFactory:1.0', ICORBADIIServer,
    TCORBADIIServer, iMultiInstance, tmSingleThread);
end.