TAO/examples/Persistent_Grid/Simple_util.h

   1
   2 //=============================================================================
   3 /**
   4  *  @file    Simple_util.h
   5  *
   6  *  The classe define the templates for the client and server.
   7  *
   8  *  @author Balachandran Natarajan <bala@cs.wustl.edu>
   9  */
  10 //=============================================================================
  11
  12
  13 #ifndef TAO_UTIL_H
  14 #define TAO_UTIL_H
  15
  16 #include "tao/Utils/ORB_Manager.h"
  17 #include "ace/Get_Opt.h"
  18 #include "ace/Read_Buffer.h"
  19
  20 /**
  21  * @class Server
  22  *
  23  * @brief A set of useful class Templates for using the TAO CORBA
  24  * implementation.
  25  *
  26  * A template server definition. This template can be used by
  27  * single server/client projects for definition of their
  28  * server/clients.  See the directories time, bank, echo for
  29  * further details of implemenatation.
  30  */
  31 template <class Servant>
  32 class Server
  33 {
  34 public:
  35   /// Constructor.
  36   Server ();
  37
  38   /// Destructor.
  39   ~Server ();
  40
  41   /// Initialize the Server state - parsing arguments and waiting.
  42   /// interface_name is the name used to register the Servant.
  43   int init (const char *servant_name,
  44             int argc,
  45             ACE_TCHAR *argv[]);
  46
  47   // int register_name ();
  48   // After calling <init>, this method will register the server with
  49   // the TAO Naming Service using the servant_name passed to <init>.
  50
  51   /// Run the orb.
  52   int run ();
  53
  54  protected:
  55   /// Servant class
  56   Servant servant_;
  57
  58   /// name of the servant to be used for TAO Naming Service
  59   const char *name;
  60
  61   /// Parses the commandline arguments.
  62   int parse_args ();
  63
  64   /// The ORB manager - a helper class for accessing the POA and
  65   /// registering objects.
  66   TAO_ORB_Manager orb_manager_;
  67
  68   /// File where the IOR of the server object is stored.
  69   FILE *ior_output_file_;
  70
  71   /// Memory pool name that stores the state
  72   ACE_TCHAR* mem_pool_name_;
  73
  74   /// Number of command line arguments.
  75   int argc_;
  76
  77   /// The command line arguments.
  78   ACE_TCHAR **argv_;
  79 };
  80
  81
  82 // Client Class starts here
  83
  84 /**
  85  * @class Client
  86  *
  87  * @brief Template Client class
  88  *
  89  * A template client implementation for a single server/client
  90  * model. The example usage of these usage can be found in the
  91  * sub-directories below
  92  */
  93 template <class InterfaceObj, class Var>
  94 class Client
  95 {
  96 public:
  97   /// Constructor.
  98   Client ();
  99
 100   /// Destructor.
 101   ~Client ();
 102
 103   /// Initialize the client communication endpoint with server.
 104   int init (const char *name,int argc, ACE_TCHAR *argv[]);
 105
 106   /// Return the interface object pointer.
 107   InterfaceObj *operator-> () { return server_.in ();};
 108
 109   /// Returns the shutdown flag.
 110   int shutdown ();
 111
 112   /// Fills in the shutdwon flag.
 113   void shutdown (int);
 114
 115   /// Initialize naming service
 116   int obtain_initial_references ();
 117
 118 protected:
 119   /// Function to read the server IOR from a file.
 120   int read_ior (ACE_TCHAR *filename);
 121
 122   /// Parses the arguments passed on the command line.
 123   int parse_args ();
 124
 125   /// Remember our orb.
 126   CORBA::ORB_var orb_;
 127
 128   /// # of arguments on the command line.
 129   int argc_;
 130
 131   /// arguments from command line.
 132   ACE_TCHAR **argv_;
 133
 134   /// IOR of the obj ref of the server.
 135   char *ior_;
 136
 137   /// Flag to use the naming service
 138   int naming_;
 139
 140   /// Flag for shutting down the server
 141   int shutdown_;
 142
 143   /// Server object
 144   Var server_;
 145 };
 146
 147 #include "Simple_util.cpp"
 148
 149 #endif /* TAO_UTIL_H */