cpp/src/qpid/amqp/MessageEncoder.h

#ifndef QPID_AMQP_MESSAGEENCODER_H
#define QPID_AMQP_MESSAGEENCODER_H

/*
 *
 * 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.
 *
 */
#include "qpid/amqp/Encoder.h"
#include "qpid/types/Variant.h"

namespace qpid {
namespace amqp {

/**
 *
 */
class MessageEncoder : public Encoder
{
  public:
    class Header
    {
      public:
        virtual ~Header() {}
        virtual bool isDurable() const = 0;
        virtual uint8_t getPriority() const = 0;
        virtual bool hasTtl() const = 0;
        virtual uint32_t getTtl() const = 0;
        virtual bool isFirstAcquirer() const = 0;
        virtual uint32_t getDeliveryCount() const = 0;
    };

    class Properties
    {
      public:
        virtual ~Properties() {}
        virtual bool hasMessageId() const = 0;
        virtual std::string getMessageId() const = 0;
        virtual bool hasUserId() const = 0;
        virtual std::string getUserId() const = 0;
        virtual bool hasTo() const = 0;
        virtual std::string getTo() const = 0;
        virtual bool hasSubject() const = 0;
        virtual std::string getSubject() const = 0;
        virtual bool hasReplyTo() const = 0;
        virtual std::string getReplyTo() const = 0;
        virtual bool hasCorrelationId() const = 0;
        virtual std::string getCorrelationId() const = 0;
        virtual bool hasContentType() const = 0;
        virtual std::string getContentType() const = 0;
        virtual bool hasContentEncoding() const = 0;
        virtual std::string getContentEncoding() const = 0;
        virtual bool hasAbsoluteExpiryTime() const = 0;
        virtual int64_t getAbsoluteExpiryTime() const = 0;
        virtual bool hasCreationTime() const = 0;
        virtual int64_t getCreationTime() const = 0;
        virtual bool hasGroupId() const = 0;
        virtual std::string getGroupId() const = 0;
        virtual bool hasGroupSequence() const = 0;
        virtual uint32_t getGroupSequence() const = 0;
        virtual bool hasReplyToGroupId() const = 0;
        virtual std::string getReplyToGroupId() const = 0;
    };

    MessageEncoder(char* d, size_t s, bool o=false) : Encoder(d, s), optimise(o) {}
    void writeHeader(const Header&);
    void writeProperties(const Properties&);
    void writeApplicationProperties(const qpid::types::Variant::Map& properties);
    void writeApplicationProperties(const qpid::types::Variant::Map& properties, bool useLargeMap);

    void writeMap(const qpid::types::Variant::Map& map, const Descriptor*, bool useLargeMap);

    static size_t getEncodedSize(const Header&, const Properties&, const qpid::types::Variant::Map&, const std::string&);
    static size_t getEncodedSize(const Properties&, const qpid::types::Variant::Map&, const std::string&);
    static size_t getEncodedSize(const qpid::types::Variant::Map&, bool useLargeMap);
    static size_t getEncodedSize(const qpid::types::Variant::Map&);

  private:
    bool optimise;

    static size_t getEncodedSizeForElements(const qpid::types::Variant::Map&);
};
}} // namespace qpid::amqp

#endif  /*!QPID_AMQP_MESSAGEENCODER_H*/