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/* -*- C++ -*- */
// $Id$
// ========================================================================
//
// = LIBRARY
// orbsvcs
//
// = FILENAME
// Offer_Iterators_T.h
//
// = AUTHOR
// Marina Spivak <marina@cs.wustl.edu>
// Seth Widoff <sbw1@cs.wustl.edu>
//
// ========================================================================
#ifndef TAO_REGISTER_OFFER_ITERATOR_H
#define TAO_REGISTER_OFFER_ITERATOR_H
#include "Offer_Iterators.h"
#include "Offer_Database.h"
template <class MAP_LOCK_TYPE>
class TAO_Register_Offer_Iterator : public TAO_Offer_Iterator
{
// = TITLE
// An implementation of CosTrading::OfferIterator IDL interface
// appropriate when trader has Register functionality.
//
// = DESCRIPTION
// 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).
public:
// = Initialization and termination methods.
TAO_Register_Offer_Iterator (TAO_Offer_Database<MAP_LOCK_TYPE> &db,
const TAO_Property_Filter& pfilter);
// Takes service type and trader reference in order to
// later locate offers using their ids.
virtual ~TAO_Register_Offer_Iterator (void);
// destructor.
virtual CORBA::Boolean next_n (CORBA::ULong n,
CosTrading::OfferSeq_out offers,
CORBA::Environment &)
ACE_THROW_SPEC ((CORBA::SystemException));
// 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::ULong max_left (CORBA::Environment &)
ACE_THROW_SPEC ((CORBA::SystemException,
CosTrading::UnknownMaxLeft));
// 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.
void add_offer (CosTrading::OfferId id,
const CosTrading::Offer *);
// Add an offer the iterator should iterate over.
private:
TAO_Offer_Database<MAP_LOCK_TYPE> &db_;
// A reference to the trader is needed for access to the map of offers.
TAO_String_Queue offer_ids_;
// Offer ids of offers to iterate over.
};
#if defined (ACE_TEMPLATES_REQUIRE_SOURCE)
#include "Offer_Iterators_T.cpp"
#endif /* ACE_TEMPLATES_REQUIRE_SOURCE */
#endif /* TAO_REGISTER_OFFER_ITERATOR_H */
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