以前，我是采用SocketConnect+RemoteDataModule+Midas方法
现在，我想采用RemObject方法，
中间层TRODataSnapModule中，元件有:ADOConnection DataSetProvider AdoQuery
我现在，希望不同用户登录时，可以给不同的CommandTimeOut,
则我必须实现将一个参数（如用户ID）传到TRODataSnapModule,才可以更改CommandTimeOut
我不知道怎么实现传参数传进去？
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(以前，我是用SocketConnect,我知道，只要在中间层模块中Type Library中定义一个过程，即可实现传参数到RemoteDataModul中。)

ROServer 在create Datamodule時 是使用 TROClassFactory  
TROClassFactory.Create('IAppServer', Create_DataSnapModule, TAppServer_Invoker);
參考一下他的uRoserver.pas 的原碼 在建立DataSnapModule給予你要的參數

然後再寫 method 讓前端可以用SOAP或bin傳入到server端 給予DataSnapModule啟動的參數

我研究了一下，不懂如何下手“从客户端传参数到TRORemoteDataModul中".
我贴出源码，望a0有空帮看一下，哪个地方入手。（本人刚开始搞RemObject)
Unit1:
---------------------------
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, uROClient, uROServer, uROIndyTCPServer, uROIndyHTTPServer,
uROBinMessage;
type
TForm1 = class(TForm)
msg_BIN: TROBinMessage;
HTTPServer: TROIndyHTTPServer;
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
end.

=========================================
Unit2,(RemoteDataModul)

-------------
unit Unit2;
interface
uses {vcl:} SysUtils, Classes, DB, DBClient,
{RemObjects:} uRODataSnapModule, Provider, ADODB, uROClient,
uROSessions,uROClassFactories,uROClientIntf;
type
TRODataSnapModule2 = class(TRODataSnapModule)
con_SqlServer: TADOConnection;
qry_customers: TADOQuery;
prv_customers: TDataSetProvider;
private
{ Private declarations }
v:boolean;
public
{ Public declarations }
end;
var
RODataSnapModule2: TRODataSnapModule2;
implementation
uses {RemObjects:} uROServer, uRODataSnap_Invk;
{$R *.DFM}
procedure Create_DataSnapModule(out oInstance:IUnknown);
begin
oInstance := TRODataSnapModule2.Create(nil);
end;
initialization
TROClassFactory.Create('IAppServer', Create_DataSnapModule, TAppServer_Invoker);
end.



**********客户端**************

unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, DB, DBClient, uROClient, uROBinMessage,
uROWinInetHttpChannel, uRODataSnapConnection, Grids, DBGrids;
type
TForm1 = class(TForm)
RODataSnapConnection: TRODataSnapConnection;
HTTPChannel: TROWinInetHTTPChannel;
ROBinMessage: TROBinMessage;
aa: TClientDataSet;
Button1: TButton;
Memo1: TMemo;
DataSource1: TDataSource;
DBGrid1: TDBGrid;
Button2: TButton;
ClientDataSet1: TClientDataSet;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
begin
aa.Close;
aa.CommandText:=Memo1.Lines.Text;
aa.Open;
showmessage('OPEN');
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
aa.Close;
aa.CommandText:=Memo1.Lines.Text;
aa.Execute;
showmessage('EXEC');
end;
end.

編輯記錄

使用 Session 客户端的 ClientID 就是用于 Session 的,建议使用简单的 MemorySession管理。

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(C)(P)Flying Wang