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 #include <stdexcept>
  31
  32 ScheduleXmlParser::ScheduleXmlParser(SqlEngine* sqlEngine, QObject *aParent): QObject(aParent),sqlEngine(sqlEngine) {
  33 }
  34
  35
  36 class ParseException: public std::runtime_error {
  37 public:
  38     ParseException(const QString& message): std::runtime_error(message.toStdString()) {}
  39 };
  40
  41
  42 void checkEvent(QHash<QString,QString>& event) {
  43     QString event_id = event["id"];
  44     if (event_id.trimmed().isEmpty()) throw ParseException(QObject::tr("The ID of event '%1' is missing.").arg(event["title"]));
  45     bool ok;
  46     event_id.toInt(&ok);
  47     if (!ok) throw ParseException(QObject::tr("The ID '%2' of event '%1' is not numeric.").arg(event["title"]).arg(event_id));
  48 }
  49
  50
  51 void ScheduleXmlParser::parseDataImpl(const QByteArray &aData, const QString& url, int conferenceId) {
  52     QDomDocument document;
  53     QString xml_error;
  54     int xml_error_line;
  55     int xml_error_column;
  56     if (!document.setContent(aData, false, &xml_error, &xml_error_line, &xml_error_column)) {
  57         throw ParseException("Could not parse schedule: " + xml_error + " at line " + QString("%1").arg(xml_error_line) + " column " + QString("%1").arg(xml_error_column));
  58     }
  59
  60     QDomElement scheduleElement = document.firstChildElement("schedule");
  61
  62     TransactionRaii transaction(*sqlEngine); // begins the transaction
  63
  64     QString conference_title;
  65     if (!scheduleElement.isNull())
  66     {
  67         QDomElement conferenceElement = scheduleElement.firstChildElement("conference");
  68         QTime conference_day_change;
  69         if (!conferenceElement.isNull())
  70         {
  71             emit(parsingScheduleBegin());
  72             QHash<QString,QString> conference;
  73             conference["id"] = QString::number(conferenceId); // conference ID is assigned automatically if 0
  74             conference["title"] = conferenceElement.firstChildElement("title").text();
  75             conference["subtitle"] = conferenceElement.firstChildElement("subtitle").text();
  76             conference["venue"] = conferenceElement.firstChildElement("venue").text();
  77             conference["city"] = conferenceElement.firstChildElement("city").text();
  78             conference["start"] = conferenceElement.firstChildElement("start").text(); // date
  79             conference["end"] = conferenceElement.firstChildElement("end").text(); // date
  80             QString conferenceDayChangeStr = conferenceElement.firstChildElement("day_change").text(); // time, e.g. "04:00:00"
  81             if (conferenceDayChangeStr.isEmpty()) conferenceDayChangeStr = "04:00:00";
  82             conference["day_change"] = conferenceDayChangeStr;
  83             conference["timeslot_duration"] = conferenceElement.firstChildElement("timeslot_duration").text(); // time
  84             conference["url"] = url;
  85             sqlEngine->addConferenceToDB(conference, conferenceId);
  86             conferenceId = conference["id"].toInt();
  87             conference_title = conference["title"];
  88             conference_day_change = QTime(0, 0).addSecs(conference["day_change"].toInt());
  89         }
  90
  91         // we need to get count of all events in order to emit 'progressStatus' signal
  92         int totalEventsCount = scheduleElement.elementsByTagName("event").count();
  93
  94         // parsing day elements
  95         int currentEvent = 0; // hold global idx of processed event
  96         QDomNodeList dayList = scheduleElement.elementsByTagName("day");
  97         for (int i=0; i<dayList.count(); i++)
  98         {
  99             QDomElement dayElement = dayList.at(i).toElement();
 100             //QDate dayDate = QDate::fromString(dayElement.attribute("date"),DATE_FORMAT);
 101             //int dayIndex = dayElement.attribute("index").toInt();
 102
 103             // parsing room elements
 104             QDomNodeList roomList = dayElement.elementsByTagName("room");
 105             for (int i=0; i<roomList.count(); i++)
 106             {
 107                 QDomElement roomElement = roomList.at(i).toElement();
 108                 // roomElement has to be 'Element' and it has to have 'name' attribute
 109                 // TODO: 'event' has also 'room' node, so it can be unstable if that node has also 'name' attribute
 110                 if(roomElement.hasAttribute("name"))
 111                 {
 112                     // parsing event elements
 113                     QDomNodeList eventList = roomElement.elementsByTagName("event");
 114                     for (int i=0; i<eventList.count(); i++)
 115                     {
 116                         currentEvent++;
 117                         QDomElement eventElement = eventList.at(i).toElement();
 118
 119                         // now we have all info to create ROOM/EVENT_ROOM record(s)
 120                         QHash<QString,QString> room;
 121                         room["name"] = roomElement.attribute("name");
 122                         room["event_id"] = eventElement.attribute("id");
 123                         room["conference_id"] = QString::number(conferenceId,10);
 124                         sqlEngine->addRoomToDB(room);
 125
 126                         // process event's nodes
 127                         QHash<QString,QString> event;
 128                         event["id"] = eventElement.attribute("id");
 129                         event["conference_id"] = QString::number(conferenceId, 10);
 130                         QTime event_start = QTime::fromString(eventElement.firstChildElement("start").text(), sqlEngine->TIME_FORMAT);
 131                         event["start"] = event_start.toString(sqlEngine->TIME_FORMAT); // time eg. 10:00
 132                         QDate event_date;
 133                         QDomElement eventDateElement = eventElement.firstChildElement("date");
 134                         if (!eventDateElement.isNull()) {
 135                             QString date_str = eventDateElement.text(); // date eg. 2009-02-07T10:00:00+00:00
 136                             event_date = QDate::fromString(date_str.left(sqlEngine->DATE_FORMAT.size()), sqlEngine->DATE_FORMAT);
 137                         } else {
 138                             event_date = QDate::fromString(dayElement.attribute("date"),sqlEngine->DATE_FORMAT); // date eg. 2009-02-07
 139                             if (event_start < conference_day_change) event_date = event_date.addDays(1);
 140                         }
 141                         event["date"] = event_date.toString(sqlEngine->DATE_FORMAT); // date eg. 2009-02-07
 142                         event["duration"] = eventElement.firstChildElement("duration").text(); // time eg. 00:30
 143                         event["room_name"] = eventElement.firstChildElement("room").text(); // string eg. "Janson"
 144                         event["tag"] = eventElement.firstChildElement("tag").text(); // string eg. "welcome"
 145                         event["title"] = eventElement.firstChildElement("title").text(); // string eg. "Welcome"
 146                         event["subtitle"] = eventElement.firstChildElement("subtitle").text(); // string
 147                         event["track"] = eventElement.firstChildElement("track").text(); // string eg. "Keynotes"
 148                         event["type"] = eventElement.firstChildElement("type").text(); // string eg. "Podium"
 149                         event["language"] = eventElement.firstChildElement("language").text(); // language eg. "English"
 150                         event["abstract"] = eventElement.firstChildElement("abstract").text(); // string
 151                         event["description"] = eventElement.firstChildElement("description").text(); // string
 152                         checkEvent(event);
 153                         sqlEngine->addEventToDB(event);
 154                         // process persons' nodes
 155                         QDomElement personsElement = eventElement.firstChildElement("persons");
 156                         QDomNodeList personList = personsElement.elementsByTagName("person");
 157                         for(int i = 0;i < personList.count();i++){
 158                             QHash<QString,QString> person;
 159                             person["id"] = personList.at(i).toElement().attribute("id");
 160                             person["name"] = personList.at(i).toElement().text();
 161                             person["event_id"] = eventElement.attribute("id");
 162                             person["conference_id"] = QString::number(conferenceId, 10);
 163                             sqlEngine->addPersonToDB(person);
 164                         }
 165                         // process links' nodes
 166                         QDomElement linksElement = eventElement.firstChildElement("links");
 167                         QDomNodeList linkList = linksElement.elementsByTagName("link");
 168                         for(int i = 0;i < linkList.count();i++){
 169                             QHash<QString,QString> link;
 170                             link["name"] = linkList.at(i).toElement().text();
 171                             link["url"] = linkList.at(i).toElement().attribute("href");
 172                             link["event_id"] = eventElement.attribute("id");
 173                             link["conference_id"] = QString::number(conferenceId, 10);
 174                             sqlEngine->addLinkToDB(link);
 175                         }
 176                         // emit signal to inform the user about the current status (how many events are parsed so far - expressed in %)
 177                         int status = currentEvent * 100 / totalEventsCount;
 178                         progressStatus(status);
 179                     } // parsing event elements
 180                 }
 181             } // parsing room elements
 182         } // parsing day elements
 183     } // schedule element
 184     if (conference_title.isNull()) throw ParseException("Could not parse schedule");
 185
 186     transaction.commit();
 187     emit parsingScheduleEnd(conferenceId);
 188 }
 189
 190
 191 void ScheduleXmlParser::parseData(const QByteArray &aData, const QString& url, int conferenceId) {
 192     try {
 193         parseDataImpl(aData, url, conferenceId);
 194     } catch (ParseException& e) {
 195         error_message(e.what());
 196     }
 197 }
 198