Delphi Magazine Collection 2001/Delphi Magazine Collection 20001 (2001).iso/DISKS/Issue51/Construc/Server51_TLB.pas

Pascal/Delphi Source File | 1999-09-24 | 12.8 KB | 329 lines

unit Server51_TLB;

// ************************************************************************ //
// WARNING
// -------
// The types declared in this file were generated from data read from a
// Type Library. If this type library is explicitly or indirectly (via
// another type library referring to this type library) re-imported, or the
// 'Refresh' command of the Type Library Editor activated while editing the
// Type Library, the contents of this file will be regenerated and all
// manual modifications will be lost.
// ************************************************************************ //

// PASTLWTR : $Revision:   1.88  $
// File generated on 1999/09/24 14:52:58 from Type Library described below.

// *************************************************************************//
// NOTE:
// Items guarded by $IFDEF_LIVE_SERVER_AT_DESIGN_TIME are used by properties
// which return objects that may need to be explicitly created via a function
// call prior to any access via the property. These items have been disabled
// in order to prevent accidental use from within the object inspector. You
// may enable them by defining LIVE_SERVER_AT_DESIGN_TIME or by selectively
// removing them from the $IFDEF blocks. However, such items must still be
// programmatically created via a method of the appropriate CoClass before
// they can be used.
// ************************************************************************ //
// Type Lib: D:\usr\bob\magazine\DELPHI.MAG\#51\src\Server51.tlb (1)
// IID\LCID: {A2A63DA2-7257-11D3-BE12-00104BF89DAD}\0
// Helpfile:
// DepndLst:
//   (1) v2.0 stdole, (C:\WINNT\System32\STDOLE2.TLB)
//   (2) v4.0 StdVCL, (C:\WINNT\System32\STDVCL40.DLL)
//   (3) v1.0 Midas, (C:\WINNT\System32\midas.dll)
// ************************************************************************ //
{$TYPEDADDRESS OFF} // Unit must be compiled without type-checked pointers.
interface

uses Windows, ActiveX, Classes, Graphics, OleServer, OleCtrls, StdVCL,
  MIDAS;

// *********************************************************************//
// GUIDS declared in the TypeLibrary. Following prefixes are used:
//   Type Libraries     : LIBID_xxxx
//   CoClasses          : CLASS_xxxx
//   DISPInterfaces     : DIID_xxxx
//   Non-DISP interfaces: IID_xxxx
// *********************************************************************//
const
  // TypeLibrary Major and minor versions
  Server51MajorVersion = 1;
  Server51MinorVersion = 0;

  LIBID_Server51: TGUID = '{A2A63DA2-7257-11D3-BE12-00104BF89DAD}';

  IID_ITDM: TGUID = '{A2A63DA3-7257-11D3-BE12-00104BF89DAD}';
  CLASS_TDM: TGUID = '{A2A63DA5-7257-11D3-BE12-00104BF89DAD}';
type

// *********************************************************************//
// Forward declaration of types defined in TypeLibrary
// *********************************************************************//
  ITDM = interface;
  ITDMDisp = dispinterface;

// *********************************************************************//
// Declaration of CoClasses defined in Type Library
// (NOTE: Here we map each CoClass to its Default Interface)
// *********************************************************************//
  TDM = ITDM;


// *********************************************************************//
// Interface: ITDM
// Flags:     (4416) Dual OleAutomation Dispatchable
// GUID:      {A2A63DA3-7257-11D3-BE12-00104BF89DAD}
// *********************************************************************//
  ITDM = interface(IAppServer)
    ['{A2A63DA3-7257-11D3-BE12-00104BF89DAD}']
  end;

// *********************************************************************//
// DispIntf:  ITDMDisp
// Flags:     (4416) Dual OleAutomation Dispatchable
// GUID:      {A2A63DA3-7257-11D3-BE12-00104BF89DAD}
// *********************************************************************//
  ITDMDisp = dispinterface
    ['{A2A63DA3-7257-11D3-BE12-00104BF89DAD}']
    function  AS_ApplyUpdates(const ProviderName: WideString; Delta: OleVariant;
                              MaxErrors: Integer; out ErrorCount: Integer; var OwnerData: OleVariant): OleVariant; dispid 20000000;
    function  AS_GetRecords(const ProviderName: WideString; Count: Integer; out RecsOut: Integer;
                            Options: Integer; const CommandText: WideString;
                            var Params: OleVariant; var OwnerData: OleVariant): OleVariant; dispid 20000001;
    function  AS_DataRequest(const ProviderName: WideString; Data: OleVariant): OleVariant; dispid 20000002;
    function  AS_GetProviderNames: OleVariant; dispid 20000003;
    function  AS_GetParams(const ProviderName: WideString; var OwnerData: OleVariant): OleVariant; dispid 20000004;
    function  AS_RowRequest(const ProviderName: WideString; Row: OleVariant; RequestType: Integer;
                            var OwnerData: OleVariant): OleVariant; dispid 20000005;
    procedure AS_Execute(const ProviderName: WideString; const CommandText: WideString;
                         var Params: OleVariant; var OwnerData: OleVariant); dispid 20000006;
  end;

// *********************************************************************//
// The Class CoTDM provides a Create and CreateRemote method to
// create instances of the default interface ITDM exposed by
// the CoClass TDM. The functions are intended to be used by
// clients wishing to automate the CoClass objects exposed by the
// server of this typelibrary.
// *********************************************************************//
  CoTDM = class
    class function Create: ITDM;
    class function CreateRemote(const MachineName: string): ITDM;
  end;


// *********************************************************************//
// OLE Server Proxy class declaration
// Server Object    : TTDM
// Help String      : TDM Object
// Default Interface: ITDM
// Def. Intf. DISP? : No
// Event   Interface:
// TypeFlags        : (2) CanCreate
// *********************************************************************//
{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
  TTDMProperties= class;
{$ENDIF}
  TTDM = class(TOleServer)
  private
    FIntf:        ITDM;
{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
    FProps:       TTDMProperties;
    function      GetServerProperties: TTDMProperties;
{$ENDIF}
    function      GetDefaultInterface: ITDM;
  protected
    procedure InitServerData; override;
  public
    constructor Create(AOwner: TComponent); override;
    destructor  Destroy; override;
    procedure Connect; override;
    procedure ConnectTo(svrIntf: ITDM);
    procedure Disconnect; override;
    function  AS_ApplyUpdates(const ProviderName: WideString; Delta: OleVariant;
                              MaxErrors: Integer; out ErrorCount: Integer; var OwnerData: OleVariant): OleVariant;
    function  AS_GetRecords(const ProviderName: WideString; Count: Integer; out RecsOut: Integer;
                            Options: Integer; const CommandText: WideString;
                            var Params: OleVariant; var OwnerData: OleVariant): OleVariant;
    function  AS_DataRequest(const ProviderName: WideString; Data: OleVariant): OleVariant;
    function  AS_GetProviderNames: OleVariant;
    function  AS_GetParams(const ProviderName: WideString; var OwnerData: OleVariant): OleVariant;
    function  AS_RowRequest(const ProviderName: WideString; Row: OleVariant; RequestType: Integer;
                            var OwnerData: OleVariant): OleVariant;
    procedure AS_Execute(const ProviderName: WideString; const CommandText: WideString;
                         var Params: OleVariant; var OwnerData: OleVariant);
    property  DefaultInterface: ITDM read GetDefaultInterface;
  published
{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
    property Server: TTDMProperties read GetServerProperties;
{$ENDIF}
  end;

{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
// *********************************************************************//
// OLE Server Properties Proxy Class
// Server Object    : TTDM
// (This object is used by the IDE's Property Inspector to allow editing
//  of the properties of this server)
// *********************************************************************//
 TTDMProperties = class(TPersistent)
  private
    FServer:    TTDM;
    function    GetDefaultInterface: ITDM;
    constructor Create(AServer: TTDM);
  protected
  public
    property DefaultInterface: ITDM read GetDefaultInterface;
  published
  end;
{$ENDIF}


procedure Register;

implementation

uses ComObj;

class function CoTDM.Create: ITDM;
begin
  Result := CreateComObject(CLASS_TDM) as ITDM;
end;

class function CoTDM.CreateRemote(const MachineName: string): ITDM;
begin
  Result := CreateRemoteComObject(MachineName, CLASS_TDM) as ITDM;
end;

procedure TTDM.InitServerData;
const
  CServerData: TServerData = (
    ClassID:   '{A2A63DA5-7257-11D3-BE12-00104BF89DAD}';
    IntfIID:   '{A2A63DA3-7257-11D3-BE12-00104BF89DAD}';
    EventIID:  '';
    LicenseKey: nil;
    Version: 500);
begin
  ServerData := @CServerData;
end;

procedure TTDM.Connect;
var
  punk: IUnknown;
begin
  if FIntf = nil then
  begin
    punk := GetServer;
    Fintf:= punk as ITDM;
  end;
end;

procedure TTDM.ConnectTo(svrIntf: ITDM);
begin
  Disconnect;
  FIntf := svrIntf;
end;

procedure TTDM.DisConnect;
begin
  if Fintf <> nil then
  begin
    FIntf := nil;
  end;
end;

function TTDM.GetDefaultInterface: ITDM;
begin
  if FIntf = nil then
    Connect;
  Assert(FIntf <> nil, 'DefaultInterface is NULL. Component is not connected to Server. You must call ''Connect'' or ''ConnectTo'' before this operation');
  Result := FIntf;
end;

constructor TTDM.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
  FProps := TTDMProperties.Create(Self);
{$ENDIF}
end;

destructor TTDM.Destroy;
begin
{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
  FProps.Free;
{$ENDIF}
  inherited Destroy;
end;

{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
function TTDM.GetServerProperties: TTDMProperties;
begin
  Result := FProps;
end;
{$ENDIF}

function  TTDM.AS_ApplyUpdates(const ProviderName: WideString; Delta: OleVariant;
                               MaxErrors: Integer; out ErrorCount: Integer;
                               var OwnerData: OleVariant): OleVariant;
begin
  Result := DefaultInterface.AS_ApplyUpdates(ProviderName, Delta, MaxErrors, ErrorCount, OwnerData);
end;

function  TTDM.AS_GetRecords(const ProviderName: WideString; Count: Integer; out RecsOut: Integer;
                             Options: Integer; const CommandText: WideString;
                             var Params: OleVariant; var OwnerData: OleVariant): OleVariant;
begin
  Result := DefaultInterface.AS_GetRecords(ProviderName, Count, RecsOut, Options, CommandText,
                                           Params, OwnerData);
end;

function  TTDM.AS_DataRequest(const ProviderName: WideString; Data: OleVariant): OleVariant;
begin
  Result := DefaultInterface.AS_DataRequest(ProviderName, Data);
end;

function  TTDM.AS_GetProviderNames: OleVariant;
begin
  Result := DefaultInterface.AS_GetProviderNames;
end;

function  TTDM.AS_GetParams(const ProviderName: WideString; var OwnerData: OleVariant): OleVariant;
begin
  Result := DefaultInterface.AS_GetParams(ProviderName, OwnerData);
end;

function  TTDM.AS_RowRequest(const ProviderName: WideString; Row: OleVariant; RequestType: Integer;
                             var OwnerData: OleVariant): OleVariant;
begin
  Result := DefaultInterface.AS_RowRequest(ProviderName, Row, RequestType, OwnerData);
end;

procedure TTDM.AS_Execute(const ProviderName: WideString; const CommandText: WideString;
                          var Params: OleVariant; var OwnerData: OleVariant);
begin
  DefaultInterface.AS_Execute(ProviderName, CommandText, Params, OwnerData);
end;

{$IFDEF LIVE_SERVER_AT_DESIGN_TIME}
constructor TTDMProperties.Create(AServer: TTDM);
begin
  inherited Create;
  FServer := AServer;
end;

function TTDMProperties.GetDefaultInterface: ITDM;
begin
  Result := FServer.DefaultInterface;
end;

{$ENDIF}

procedure Register;
begin
  RegisterComponents('Servers',[TTDM]);
end;

end.