src/sql/schedulexmlparser.cpp

   1 /*
   2  * Copyright (C) 2010 Ixonos Plc.
   3  * Copyright (C) 2011-2017 Philipp Spitzer, gregor herrmann, Stefan Stahl
   4  *
   5  * This file is part of ConfClerk.
   6  *
   7  * ConfClerk is free software: you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the Free
   9  * Software Foundation, either version 2 of the License, or (at your option)
  10  * any later version.
  11  *
  12  * ConfClerk is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * ConfClerk.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <QDomDocument>
  22 #include <QHash>
  23 #include <QTime>
  24
  25 #include "schedulexmlparser.h"
  26 #include "sqlengine.h"
  27 #include "../gui/errormessage.h"
  28
  29 #include <QDebug>
  30
  31 ScheduleXmlParser::ScheduleXmlParser(SqlEngine* sqlEngine, QObject *aParent): QObject(aParent),sqlEngine(sqlEngine) {
  32 }
  33
  34
  35 class ParseException: public std::runtime_error {
  36 public:
  37     ParseException(const QString& message): std::runtime_error(message.toStdString()) {}
  38 };
  39
  40
  41 void ScheduleXmlParser::parseDataImpl(const QByteArray &aData, const QString& url, int conferenceId) {
  42     QDomDocument document;
  43     QString xml_error;
  44     int xml_error_line;
  45     int xml_error_column;
  46     if (!document.setContent(aData, false, &xml_error, &xml_error_line, &xml_error_column)) {
  47         throw ParseException("Could not parse schedule: " + xml_error + " at line " + QString("%1").arg(xml_error_line) + " column " + QString("%1").arg(xml_error_column));
  48     }
  49
  50     QDomElement scheduleElement = document.firstChildElement("schedule");
  51
  52     TransactionRaii transaction(*sqlEngine); // begins the transaction
  53
  54     QString conference_title;
  55     if (!scheduleElement.isNull())
  56     {
  57         QDomElement conferenceElement = scheduleElement.firstChildElement("conference");
  58         QTime conference_day_change;
  59         if (!conferenceElement.isNull())
  60         {
  61             emit(parsingScheduleBegin());
  62             QHash<QString,QString> conference;
  63             conference["id"] = QString::number(conferenceId); // conference ID is assigned automatically if 0
  64             conference["title"] = conferenceElement.firstChildElement("title").text();
  65             conference["subtitle"] = conferenceElement.firstChildElement("subtitle").text();
  66             conference["venue"] = conferenceElement.firstChildElement("venue").text();
  67             conference["city"] = conferenceElement.firstChildElement("city").text();
  68             conference["start"] = conferenceElement.firstChildElement("start").text(); // date
  69             conference["end"] = conferenceElement.firstChildElement("end").text(); // date
  70             QString conferenceDayChangeStr = conferenceElement.firstChildElement("day_change").text(); // time, e.g. "04:00:00"
  71             if (conferenceDayChangeStr.isEmpty()) conferenceDayChangeStr = "04:00:00";
  72             conference["day_change"] = conferenceDayChangeStr;
  73             conference["timeslot_duration"] = conferenceElement.firstChildElement("timeslot_duration").text(); // time
  74             conference["url"] = url;
  75             sqlEngine->addConferenceToDB(conference, conferenceId);
  76             conferenceId = conference["id"].toInt();
  77             conference_title = conference["title"];
  78             conference_day_change = QTime(0, 0).addSecs(conference["day_change"].toInt());
  79         }
  80
  81         // we need to get count of all events in order to emit 'progressStatus' signal
  82         int totalEventsCount = scheduleElement.elementsByTagName("event").count();
  83
  84         // parsing day elements
  85         int currentEvent = 0; // hold global idx of processed event
  86         QDomNodeList dayList = scheduleElement.elementsByTagName("day");
  87         for (int i=0; i<dayList.count(); i++)
  88         {
  89             QDomElement dayElement = dayList.at(i).toElement();
  90             //QDate dayDate = QDate::fromString(dayElement.attribute("date"),DATE_FORMAT);
  91             //int dayIndex = dayElement.attribute("index").toInt();
  92
  93             // parsing room elements
  94             QDomNodeList roomList = dayElement.elementsByTagName("room");
  95             for (int i=0; i<roomList.count(); i++)
  96             {
  97                 QDomElement roomElement = roomList.at(i).toElement();
  98                 // roomElement has to be 'Element' and it has to have 'name' attribute
  99                 // TODO: 'event' has also 'room' node, so it can be unstable if that node has also 'name' attribute
 100                 if(roomElement.hasAttribute("name"))
 101                 {
 102                     // parsing event elements
 103                     QDomNodeList eventList = roomElement.elementsByTagName("event");
 104                     for (int i=0; i<eventList.count(); i++)
 105                     {
 106                         currentEvent++;
 107                         QDomElement eventElement = eventList.at(i).toElement();
 108
 109                         // now we have all info to create ROOM/EVENT_ROOM record(s)
 110                         QHash<QString,QString> room;
 111                         room["name"] = roomElement.attribute("name");
 112                         room["event_id"] = eventElement.attribute("id");
 113                         room["conference_id"] = QString::number(conferenceId,10);
 114                         sqlEngine->addRoomToDB(room);
 115
 116                         // process event's nodes
 117                         QHash<QString,QString> event;
 118                         event["id"] = eventElement.attribute("id");;
 119                         event["conference_id"] = QString::number(conferenceId, 10);
 120                         QTime event_start = QTime::fromString(eventElement.firstChildElement("start").text(), sqlEngine->TIME_FORMAT);
 121                         event["start"] = event_start.toString(sqlEngine->TIME_FORMAT); // time eg. 10:00
 122                         QDate event_date;
 123                         QDomElement eventDateElement = eventElement.firstChildElement("date");
 124                         if (!eventDateElement.isNull()) {
 125                             QString date_str = eventDateElement.text(); // date eg. 2009-02-07T10:00:00+00:00
 126                             event_date = QDate::fromString(date_str.left(sqlEngine->DATE_FORMAT.size()), sqlEngine->DATE_FORMAT);
 127                         } else {
 128                             event_date = QDate::fromString(dayElement.attribute("date"),sqlEngine->DATE_FORMAT); // date eg. 2009-02-07
 129                             if (event_start < conference_day_change) event_date = event_date.addDays(1);
 130                         }
 131                         event["date"] = event_date.toString(sqlEngine->DATE_FORMAT); // date eg. 2009-02-07
 132                         event["duration"] = eventElement.firstChildElement("duration").text(); // time eg. 00:30
 133                         event["room_name"] = eventElement.firstChildElement("room").text(); // string eg. "Janson"
 134                         event["tag"] = eventElement.firstChildElement("tag").text(); // string eg. "welcome"
 135                         event["title"] = eventElement.firstChildElement("title").text(); // string eg. "Welcome"
 136                         event["subtitle"] = eventElement.firstChildElement("subtitle").text(); // string
 137                         event["track"] = eventElement.firstChildElement("track").text(); // string eg. "Keynotes"
 138                         event["type"] = eventElement.firstChildElement("type").text(); // string eg. "Podium"
 139                         event["language"] = eventElement.firstChildElement("language").text(); // language eg. "English"
 140                         event["abstract"] = eventElement.firstChildElement("abstract").text(); // string
 141                         event["description"] = eventElement.firstChildElement("description").text(); // string
 142                         sqlEngine->addEventToDB(event);
 143                         // process persons' nodes
 144                         QDomElement personsElement = eventElement.firstChildElement("persons");
 145                         QDomNodeList personList = personsElement.elementsByTagName("person");
 146                         for(int i = 0;i < personList.count();i++){
 147                             QHash<QString,QString> person;
 148                             person["id"] = personList.at(i).toElement().attribute("id");
 149                             person["name"] = personList.at(i).toElement().text();
 150                             person["event_id"] = eventElement.attribute("id");
 151                             person["conference_id"] = QString::number(conferenceId, 10);
 152                             sqlEngine->addPersonToDB(person);
 153                         }
 154                         // process links' nodes
 155                         QDomElement linksElement = eventElement.firstChildElement("links");
 156                         QDomNodeList linkList = linksElement.elementsByTagName("link");
 157                         for(int i = 0;i < linkList.count();i++){
 158                             QHash<QString,QString> link;
 159                             link["name"] = linkList.at(i).toElement().text();
 160                             link["url"] = linkList.at(i).toElement().attribute("href");
 161                             link["event_id"] = eventElement.attribute("id");
 162                             link["conference_id"] = QString::number(conferenceId, 10);
 163                             sqlEngine->addLinkToDB(link);
 164                         }
 165                         // emit signal to inform the user about the current status (how many events are parsed so far - expressed in %)
 166                         int status = currentEvent * 100 / totalEventsCount;
 167                         progressStatus(status);
 168                     } // parsing event elements
 169                 }
 170             } // parsing room elements
 171         } // parsing day elements
 172     } // schedule element
 173     if (conference_title.isNull()) throw ParseException("Could not parse schedule");
 174
 175     transaction.commit();
 176     emit parsingScheduleEnd(conferenceId);
 177 }
 178
 179
 180 void ScheduleXmlParser::parseData(const QByteArray &aData, const QString& url, int conferenceId) {
 181     try {
 182         parseDataImpl(aData, url, conferenceId);
 183     } catch (ParseException& e) {
 184         error_message(e.what());
 185     }
 186 }
 187