unit2.pas

Delphi 7组件与分布式应用开发源码,介绍了基础的组件应用实例

unit Unit2;

{$WARN SYMBOL_PLATFORM OFF}

interface

uses
  Windows, Messages, SysUtils, Classes, ComServ, ComObj, VCLCom, DataBkr,
  DBClient, MyDataServer2_TLB, StdVcl, Provider, DB, DBTables, Variants;

type
  TMyDataModule2 = class(TRemoteDataModule, IMyDataModule2)
    Database1: TDatabase;
    Query1: TQuery;
    DataSetProvider1: TDataSetProvider;
  private
    { Private declarations }
  protected
    class procedure UpdateRegistry(Register: Boolean; const ClassID, ProgID: string); override;
    procedure GetAllTableName(out TableName: OleVariant); safecall;
  public
    { Public declarations }
  end;

implementation

{$R *.DFM}

class procedure TMyDataModule2.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 TMyDataModule2.GetAllTableName(out TableName: OleVariant);
var
  StringList1: TStringList;
  i: Integer;
begin
  StringList1 := TStringList.Create;
  Database1.GetTableNames(StringList1, False);
  TableName := VarArrayCreate([0, StringList1.Count - 1], varVariant);
  for i := 0 to StringList1.Count - 1 do
  begin
    TableName[i] := StringList1.Strings[i];
  end;
  StringList1.Free;
end;

initialization
  TComponentFactory.Create(ComServer, TMyDataModule2,
    Class_MyDataModule2, ciMultiInstance, tmApartment);
end.