simple_tags_types.h

This is a header file defining a complete implementation of the Siena tags-based data model. In particular, this file shows how to implement the siena::TagSet, siena::TagSetList interfaces. The implementation of the classes declared in this file are implemented in the simple_tags_types.cc source file.

// -*- C++ -*-
//
//  This file is part of Siena, a wide-area event notification system.
//  See http://www.inf.usi.ch/carzaniga/siena/
//
//  Authors: Antonio Carzaniga
//  See the file AUTHORS for full details. 
//
//  Copyright (C) 2013 Antonio Carzaniga
//
//  Siena is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//  
//  Siena is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//  
//  You should have received a copy of the GNU General Public License
//  along with Siena.  If not, see <http://www.gnu.org/licenses/>.
//
#ifndef SIMPLE_TAGS_TYPES_H_INCLUDED
#define SIMPLE_TAGS_TYPES_H_INCLUDED

#include <set>
#include <string>
#include <vector>

#include <siena/tags.h>

class simple_tagset : public siena::TagSet {
public:
    class iterator : public siena::TagSet::Iterator {
    public:
        virtual bool next();

        virtual std::string to_string() const;
        virtual std::string & to_string(std::string & x) const;

        iterator(const std::set<std::string> * s, 
                 std::set<std::string>::const_iterator i);

        virtual ~iterator();

    private:
        const std::set<std::string> * ts;
        std::set<std::string>::const_iterator itr;
    };

    void add_tag(const std::string & s);
    virtual siena::TagSet::Iterator * first() const;

private:
    std::set<std::string> ts;
};

class simple_tagset_list: public siena::TagSetList {
public:
    class iterator : public siena::TagSetList::Iterator {
    public:
        virtual bool next();

        iterator(const std::vector<const simple_tagset *> * v, 
                 std::vector<const simple_tagset *>::const_iterator i);

        virtual siena::TagSet::Iterator * first() const;

        virtual ~iterator();

    private:
        const std::vector<const simple_tagset *> * tsv;
        std::vector<const simple_tagset *>::const_iterator itr;
    };

    void add_tagset(const simple_tagset * s);
    virtual siena::TagSetList::Iterator * first() const;

    ~simple_tagset_list();

private:
    std::vector<const simple_tagset *> l;
};

#endif