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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
* entitylist.h
*
* Thu Jan 14 14:17:34 CET 2010
* Copyright 2010 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of Pracro.
*
* Pracro 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 2 of the License, or
* (at your option) any later version.
*
* Pracro 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 Pracro; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef __PRACRO_ENTITYLIST_H__
#define __PRACRO_ENTITYLIST_H__
#include <map>
#include <string>
#include "versionstr.h"
#include "mutex.h"
#include "inotify.h"
#include "exception.h"
/**
* The Items contained in the EntityList.
*/
typedef std::multimap<VersionStr, std::string> EntityListItem;
/**
* The EntityList class is intended for entity file caching, so that all entitys
* do not need to be parsed on each entity query.
* It builds a list of entitys and versions based on the informations read from
* the EntityHeaderParser.
* This means that just because a entity gets into the list doesn't means that it
* will validate as a correct entity (not even nessecarily correct XML).
*/
class EntityList : public std::map<std::string, EntityListItem > {
public:
/**
* Constructor.
* @param entitypath A std::string containing the path in which we should look
* for xml files.
*/
EntityList(std::string entitypath, std::string entityname);
virtual ~EntityList();
/**
* Convenience method, to gain the filename of the latest version of a given entity.
* This method throws an Exception if the entity does not exist in the tree.
* @param entity A std::string containing the name of the wanted entity.
* @return A std::string containing the file containing the entity with full path
* included.
*/
std::string getLatestVersion(std::string entity) throw(Exception);
protected:
void rescan();
void insertEntity(std::string entity, std::string version, std::string file);
private:
virtual void addFile(std::string file) = 0;
bool removeFile(std::string file);
void updateFile(std::string file);
void updateList();
Mutex mutex;
INotify inotify;
std::string entityname;
std::string entitypath;
};
#endif/*__PRACRO_ENTITYLIST_H__*/
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