/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 */
#ifndef _DeliveryRecord_
#define _DeliveryRecord_

#include <algorithm>
#include <list>
#include <AccumulatedAck.h>
#include <BrokerMessage.h>
#include <Prefetch.h>
#include <BrokerQueue.h>

namespace qpid {
    namespace broker {
        class Channel;

        /**
         * Record of a delivery for which an ack is outstanding.
         */
        class DeliveryRecord{
            mutable Message::shared_ptr msg;
            mutable Queue::shared_ptr queue;
            std::string consumerTag;
            u_int64_t deliveryTag;
            bool pull;

        public:
            DeliveryRecord(Message::shared_ptr msg, Queue::shared_ptr queue, const std::string consumerTag, const u_int64_t deliveryTag);
            DeliveryRecord(Message::shared_ptr msg, Queue::shared_ptr queue, const u_int64_t deliveryTag);
            
            void discard(TransactionContext* ctxt = 0) const;
            bool matches(u_int64_t tag) const;
            bool coveredBy(const AccumulatedAck* const range) const;
            void requeue() const;
            void redeliver(Channel* const) const;
            void addTo(Prefetch* const prefetch) const;
            void subtractFrom(Prefetch* const prefetch) const;
        };

        typedef std::list<DeliveryRecord>::iterator ack_iterator; 
    }
}


#endif