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/* -*- C++ -*- */
// ========================================================================
// $Id$
//
// = LIBRARY
// orbsvcs
//
// = FILENAME
// Offer_Id_terator.h
//
// = AUTHOR
// Seth Widoff <sbw1@cs.wustl.edu>
//
// =======================================================================
#ifndef TAO_OFFER_ID_ITERATOR_H
#define TAO_OFFER_ID_ITERATOR_H
#include <deque>
#include <queue>
#include <string>
#include "orbsvcs/CosTradingS.h"
class TAO_Offer_Id_Iterator : public POA_CosTrading::OfferIdIterator
// = TITLE
// Silly little iterator that contains the overflow of offer ids
// from the Admin list_offers method.
//
// = DESCRIPTION
//
// BEGIN SPEC
// The OfferIdIterator interface is used to return a set of offer
// identifiers from the list_offers operation and the list_proxies
// operation in the Admin interface by enabling the offer identifiers
// to be extracted by successive operations on the OfferIdIterator
// interface.
// END SPEC
{
public:
TAO_Offer_Id_Iterator(void);
// No op constructor
~TAO_Offer_Id_Iterator (void);
virtual CORBA::ULong max_left(CORBA::Environment& env)
TAO_THROW_SPEC ((CORBA::SystemException,
CosTrading::UnknownMaxLeft));
// The max_left operation returns the number of offer identifiers
// remaining in the iterator. The exception UnknownMaxLeft is raised
// if the iterator cannot determine the remaining number of offer
// identifiers (e.g., if the iterator determines its set of offer
// identifiers through lazy evaluation).
virtual void destroy(CORBA::Environment& env)
TAO_THROW_SPEC ((CORBA::SystemException));
// The destroy operation destroys the iterator. No further
// operations can be invoked on an iterator after it has been
// destroyed.
virtual CORBA::Boolean next_n(CORBA::ULong _n,
CosTrading::OfferIdSeq_out _ids,
CORBA::Environment& env)
TAO_THROW_SPEC ((CORBA::SystemException));
// The next_n operation returns a set of offer identifiers in the
// output parameter "ids." The operation returns n offer identifiers
// if there are at least n offer identifiers remaining in the
// iterator. If there are fewer than n offer identifiers in the
// iterator, then all remaining offer identifiers are returned. The
// actual number of offer identifiers returned can be determined
// from the length of the "ids" sequence. The next_n operation
// returns TRUE if there are further offer identifiers to be
// extracted from the iterator. It returns FALSE if there are no
// further offer identifiers to be extracted.
void insert_id(CosTrading::OfferId new_id);
// Insert a <new_id> into the contents of the iterator.
private:
#ifdef OS_NO_DEFAULT_TEMPLATE_ARGUMENTS
typedef queue<CosTrading::OfferId, deque<CosTrading::OfferId> > OFFER_ID_QUEUE;
#else
typedef queue<CosTrading::OfferId> OFFER_ID_QUEUE;
#endif /* OS_NO_DEFAULT_TEMPLATE_ARGUMENTS */
OFFER_ID_QUEUE ids_;
};
#endif /* TAO_OFFER_ID_ITERATOR_H */
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