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/* -*- C++ -*- */
// ========================================================================
// $Id$
//
// = LIBRARY
// orbsvcs
//
// = FILENAME
// Trader.h
//
// = AUTHOR
// Marina Spivak <marina@cs.wustl.edu>
// Seth Widoff <sbw1@cs.wustl.edu>
// Irfan Pyarali <irfan@cs.wustl.edu>
//
// ========================================================================
#ifndef TAO_TRADER_H
#define TAO_TRADER_H
// ACE includes
#include "Trader_Base.h"
#include "Monitor.h"
#include "Service_Type_Map.h"
template <class TRADER_LOCK_TYPE, class MAP_LOCK_TYPE>
class TAO_Trader : public TAO_Trader_Base
//
// = TITLE
// This class packages together all the various pieces that
// provide functionality specified in COS Trading specification.
//
// = DESCRIPTION
// TAO_Trader contains all the components that together represent
// a single trader. Based on its constructor arguments,
// TAO_Trader creates instances of appropriate interface
// implementations as well as instances of objects common to
// more than one interface (offers, attributes, etc.).
// TAO_Trader also enforces the proper order on all
// initializations. TAO_Trader acts like a "glue" class that
// creates appropriate components, holds everything together,
// and enforces order. TAO_Trader is parameterized by two types
// of locks: one for its service service offers, one for its
// state (configuration).
{
public:
enum Trader_Components
{
LOOKUP = 0x001,
REGISTER = 0x002,
LINK = 0x004,
PROXY = 0x008,
ADMIN = 0x010
};
// The desired combination of interfaces to be passed to the
// TAO_Trader constructor.
typedef TAO_Service_Type_Map<MAP_LOCK_TYPE> SERVICE_TYPE_MAP;
typedef SERVICE_TYPE_MAP::Local_Offer_Iterator LOCAL_OFFER_ITER;
typedef MAP_LOCK_TYPE LOCK_TYPE;
TAO_Trader (Trader_Components components = LOOKUP);
// Constructor which based on its arguments will create
// a particular type of trader (e.g. Query trader, Simple trader, etc.)
// The argument is a bitwise OR of desired Trader_Components as listed
// in enumerated type above.
~TAO_Trader (void);
// destructor.
SERVICE_TYPE_MAP& service_type_map (void);
// Accessor for the structure with all the service offers.
ACE_Lock &lock (void);
// returns the trader
protected:
typedef TAO_Trader<TRADER_LOCK_TYPE, MAP_LOCK_TYPE> TRADER_SELF;
SERVICE_TYPE_MAP service_type_map_;
// A monitor (i.e. an STL map + a lock) serving as a storage for
// all the service offers of a trader.
// Structure: a map (actually a monitor) of service type names to
// a counter + a map (a monitor) of offers for that service type. A map of offers for
// a service type (an internal map) is a mapping from a number ids to offers.
ACE_Lock_Adapter<TRADER_LOCK_TYPE> lock_;
// lock that guards the state of the trader (its configuration).
enum { LOOKUP_IF, REGISTER_IF, ADMIN_IF, PROXY_IF, LINK_IF };
PortableServer::ServantBase* ifs_[5];
};
#if defined (ACE_TEMPLATES_REQUIRE_SOURCE)
#include "Trader.cpp"
#endif /* ACE_TEMPLATES_REQUIRE_SOURCE */
#endif /* ACE_TRADER_H */
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