question.h

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// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#ifndef QUESTION_H
#define QUESTION_H 1

#include <iostream>
#include <string>

#include <boost/shared_ptr.hpp>

#include <dns/name.h>
#include <dns/rrclass.h>
#include <dns/rrtype.h>

namespace isc {
namespace util {
class InputBuffer;
class OutputBuffer;
}

namespace dns {

class AbstractMessageRenderer;
class Question;

typedef boost::shared_ptr<Question> QuestionPtr;

typedef boost::shared_ptr<const Question> ConstQuestionPtr;

class Question {

public:
    Question(isc::util::InputBuffer& buffer);

    Question(const Name& name, const RRClass& rrclass, const RRType& rrtype) :
        name_(name), rrtype_(rrtype), rrclass_(rrclass)
    {}


    const Name& getName() const { return (name_); }

    const RRType& getType() const { return (rrtype_); }

    const RRClass& getClass() const { return (rrclass_); }


    std::string toText(bool newline = false) const;

    unsigned int toWire(AbstractMessageRenderer& renderer) const;

    unsigned int toWire(isc::util::OutputBuffer& buffer) const;


    bool operator <(const Question& rhs) const {
        return (rrclass_ < rhs.rrclass_ ||
                (rrclass_ == rhs.rrclass_ &&
                 (rrtype_ < rhs.rrtype_ ||
                  (rrtype_ == rhs.rrtype_ && (name_ < rhs.name_)))));
    }

    bool operator==(const Question& rhs) const {
        return ((rrclass_ == rhs.rrclass_) && (rrtype_ == rhs.rrtype_) &&
                (name_ == rhs.name_));
    }

    bool operator!=(const Question& rhs) const {
        return (!operator==(rhs));
    }

private:
    Name name_;
    RRType rrtype_;
    RRClass rrclass_;
};

std::ostream& operator<<(std::ostream& os, const Question& question);
} // end of namespace dns
} // end of namespace isc
#endif  // QUESTION_H

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