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// -*- C++ -*-
//=============================================================================
/**
* @file Offer_Iterators_T.h
*
* $Id$
*
* @author Marina Spivak <marina@cs.wustl.edu>
* @author Seth Widoff <sbw1@cs.wustl.edu>
*/
//=============================================================================
#ifndef TAO_REGISTER_OFFER_ITERATOR_H
#define TAO_REGISTER_OFFER_ITERATOR_H
#include /**/ "ace/pre.h"
#include "orbsvcs/Trader/Offer_Iterators.h"
#include "orbsvcs/Trader/Offer_Database.h"
#if defined(_MSC_VER)
#pragma warning(push)
#pragma warning(disable:4250)
#endif /* _MSC_VER */
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class TAO_Register_Offer_Iterator
*
* @brief An implementation of CosTrading::OfferIterator IDL interface
* appropriate when trader has Register functionality.
*
* Stores ids of offers to be iterated over. Before returning
* an offer, checks if the offer is still there (since it may
* have been removed by the Register).
*/
template <class MAP_LOCK_TYPE>
class TAO_Register_Offer_Iterator : public TAO_Offer_Iterator
{
public:
// = Initialization and termination methods.
/// Takes service type and trader reference in order to
/// later locate offers using their ids.
TAO_Register_Offer_Iterator (TAO_Offer_Database<MAP_LOCK_TYPE> &db,
const TAO_Property_Filter& pfilter);
/// Destructor.
virtual ~TAO_Register_Offer_Iterator (void);
/// Deposit at maximum n offers into the return sequence and return 1,
/// or return 0 if the iterator is done and no offers are returned.
virtual CORBA::Boolean next_n (CORBA::ULong n,
CosTrading::OfferSeq_out offers);
/**
* Throws CosTrading::UnknownMaxLeft since with the presence of
* "Register" functionality, the iterator cannot guarantee that
* the trader will have all the offers it has now when the time
* to return them comes.
*/
virtual CORBA::ULong max_left (void);
/// Add an offer the iterator should iterate over.
void add_offer (CosTrading::OfferId id,
const CosTrading::Offer *);
private:
/// A reference to the trader is needed for access to the map of offers.
TAO_Offer_Database<MAP_LOCK_TYPE> &db_;
/// Offer ids of offers to iterate over.
TAO_String_Queue offer_ids_;
};
TAO_END_VERSIONED_NAMESPACE_DECL
#if defined (ACE_TEMPLATES_REQUIRE_SOURCE)
#include "orbsvcs/Trader/Offer_Iterators_T.cpp"
#endif /* ACE_TEMPLATES_REQUIRE_SOURCE */
#if defined(_MSC_VER)
#pragma warning(pop)
#endif /* _MSC_VER */
#include /**/ "ace/post.h"
#endif /* TAO_REGISTER_OFFER_ITERATOR_H */
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