src/sql/schedulexmlparser.cpp

   1 /*
   2  * Copyright (C) 2010 Ixonos Plc.
   3  *
   4  * This file is part of fosdem-schedule.
   5  *
   6  * fosdem-schedule is free software: you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation, either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  * fosdem-schedule is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * fosdem-schedule.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <QDomDocument>
  21 #include <QHash>
  22
  23 #include "schedulexmlparser.h"
  24 #include "sqlengine.h"
  25 #include "../gui/errormessage.h"
  26
  27 #include <QDebug>
  28
  29 ScheduleXmlParser::ScheduleXmlParser(QObject *aParent)
  30     : QObject(aParent)
  31 {
  32 }
  33
  34 int ScheduleXmlParser::parseData(const QByteArray &aData, const QString& url)
  35 {
  36     QDomDocument document;
  37     QString xml_error;
  38     if (!document.setContent (aData, false, &xml_error)) {
  39         error_message("Could not parse schedule: " + xml_error);
  40         return -1;
  41     }
  42
  43     QDomElement scheduleElement = document.firstChildElement("schedule");
  44
  45     SqlEngine::beginTransaction();
  46
  47     int confId = 0;
  48     QString conference_title;
  49     if (!scheduleElement.isNull())
  50     {
  51         QDomElement conferenceElement = scheduleElement.firstChildElement("conference");
  52         if (!conferenceElement.isNull())
  53         {
  54             QHash<QString,QString> conference;
  55             conference["id"] = QString::number(0); // conference ID is assigned automatically, or obtained from the DB
  56             conference["title"] = conferenceElement.firstChildElement("title").text();
  57             conference["subtitle"] = conferenceElement.firstChildElement("subtitle").text();
  58             conference["venue"] = conferenceElement.firstChildElement("venue").text();
  59             conference["city"] = conferenceElement.firstChildElement("city").text();
  60             conference["start"] = conferenceElement.firstChildElement("start").text(); // date
  61             conference["end"] = conferenceElement.firstChildElement("end").text(); // date
  62             conference["days"] = conferenceElement.firstChildElement("days").text(); // int
  63             conference["day_change"] = conferenceElement.firstChildElement("day_change").text(); // time
  64             conference["timeslot_duration"] = conferenceElement.firstChildElement("timeslot_duration").text(); // time
  65             conference["url"] = url;
  66             SqlEngine::addConferenceToDB(conference);
  67             confId = conference["id"].toInt();
  68             conference_title = conference["title"];
  69             emit(parsingScheduleBegin());
  70         }
  71
  72         // we need to get count of all events in order to emit 'progressStatus' signal
  73         int totalEventsCount = scheduleElement.elementsByTagName("event").count();
  74
  75         // parsing day elements
  76         int currentEvent = 0; // hold global idx of processed event
  77         QDomNodeList dayList = scheduleElement.elementsByTagName("day");
  78         for (int i=0; i<dayList.count(); i++)
  79         {
  80             QDomElement dayElement = dayList.at(i).toElement();
  81             //QDate dayDate = QDate::fromString(dayElement.attribute("date"),DATE_FORMAT);
  82             //int dayIndex = dayElement.attribute("index").toInt();
  83
  84             // parsing room elements
  85             QDomNodeList roomList = dayElement.elementsByTagName("room");
  86             for (int i=0; i<roomList.count(); i++)
  87             {
  88                 QDomElement roomElement = roomList.at(i).toElement();
  89                 // roomElement has to be 'Element' and it has to have 'name' attribute
  90                 // TODO: 'event' has also 'room' node, so it can be unstable if that node has also 'name' attribute
  91                 if(roomElement.hasAttribute("name"))
  92                 {
  93                     // parsing event elements
  94                     QDomNodeList eventList = roomElement.elementsByTagName("event");
  95                     for (int i=0; i<eventList.count(); i++)
  96                     {
  97                         currentEvent++;
  98                         QDomElement eventElement = eventList.at(i).toElement();
  99
 100                         // now we have all info to create ROOM/EVENT_ROOM record(s)
 101                         QHash<QString,QString> room;
 102                         room["name"] = roomElement.attribute("name");
 103                         room["event_id"] = eventElement.attribute("id");
 104                         room["conference_id"] = QString::number(confId,10);
 105                         room["picture"] = "NOT DEFINED YET"; // TODO: implement some mapping to assign correct picture to specified room_name
 106                         SqlEngine::addRoomToDB(room);
 107
 108                         // process event's nodes
 109                         QHash<QString,QString> event;
 110                         event["id"] = eventElement.attribute("id");;
 111                         event["conference_id"] = QString::number(confId, 10);
 112                         event["start"] = eventElement.firstChildElement("start").text(); // time eg. 10:00
 113                         event["date"] = dayElement.attribute("date"); // date eg. 2009-02-07
 114                         event["duration"] = eventElement.firstChildElement("duration").text(); // time eg. 00:30
 115                         event["room_name"] = eventElement.firstChildElement("room").text(); // string eg. "Janson"
 116                         event["tag"] = eventElement.firstChildElement("tag").text(); // string eg. "welcome"
 117                         event["title"] = eventElement.firstChildElement("title").text(); // string eg. "Welcome"
 118                         event["subtitle"] = eventElement.firstChildElement("subtitle").text(); // string
 119                         event["track"] = eventElement.firstChildElement("track").text(); // string eg. "Keynotes"
 120                         event["type"] = eventElement.firstChildElement("type").text(); // string eg. "Podium"
 121                         event["language"] = eventElement.firstChildElement("language").text(); // language eg. "English"
 122                         event["abstract"] = eventElement.firstChildElement("abstract").text(); // string
 123                         event["description"] = eventElement.firstChildElement("description").text(); // string
 124                         SqlEngine::addEventToDB(event);
 125                         // process persons' nodes
 126                         QList<QString> persons;
 127                         QDomElement personsElement = eventElement.firstChildElement("persons");
 128                         QDomNodeList personList = personsElement.elementsByTagName("person");
 129                         for(int i = 0;i < personList.count();i++){
 130                             QHash<QString,QString> person;
 131                             person["id"] = personList.at(i).toElement().attribute("id");
 132                             person["name"] = personList.at(i).toElement().text();
 133                             person["event_id"] = eventElement.attribute("id");
 134                             person["conference_id"] = QString::number(confId, 10);
 135                             //qDebug() << "adding Person: " << person["name"];
 136                             SqlEngine::addPersonToDB(person);
 137                         }
 138                         // process links' nodes
 139                         QDomElement linksElement = eventElement.firstChildElement("links");
 140                         QDomNodeList linkList = linksElement.elementsByTagName("link");
 141                         for(int i = 0;i < linkList.count();i++){
 142                             QHash<QString,QString> link;
 143                             link["name"] = linkList.at(i).toElement().text();
 144                             link["url"] = linkList.at(i).toElement().attribute("href");
 145                             link["event_id"] = eventElement.attribute("id");
 146                             link["conference_id"] = QString::number(confId, 10);
 147                             SqlEngine::addLinkToDB(link);
 148                         }
 149                         // emit signal to inform the user about the current status (how many events are parsed so far - expressed in %)
 150                         int status = currentEvent * 100 / totalEventsCount;
 151                         progressStatus(status);
 152                     } // parsing event elements
 153                 }
 154             } // parsing room elements
 155         } // parsing day elements
 156     } // schedule element
 157     SqlEngine::commitTransaction();
 158     emit parsingScheduleEnd(conference_title);
 159
 160     return confId;
 161 }
 162