Beispiel #1
0
        public IudicoCourseInfo GetCourseInfo(int id)
        {
            var db = this.GetDbContext();

            var courseInfo = new IudicoCourseInfo { Id = id };

            var databaseNodesInfo = db.NodesInfo.Where(n => n.CourseId == id);
            foreach (var ni in databaseNodesInfo)
            {
                var nodeInfo = new IudicoNodeInfo { CourseId = id, Id = ni.NodeId };
                var databaseQuestionsInfo = db.QuestionsInfo.Where(q => q.NodeId == ni.NodeId);

                foreach (var qi in databaseQuestionsInfo)
                {
                    IudicoQuestionInfo questionInfo = null;
                    switch (qi.Type)
                    {
                        case 1:
                            var simpleQuestion = db.SimpleQuestions.Single(q => q.QuestionId == qi.Id);

                            questionInfo = new IudicoSimpleQuestion
                            {
                                QuestionText = qi.Text,
                                MaxScore = qi.MaxScore,
                                Type = IudicoQuestionType.IudicoSimple,
                                CorrectAnswer = simpleQuestion.CorrectAnswer
                            };
                            break;

                        case 2:
                            var options = db.ChoiceQuestionsOptions.Where(q => q.QuestionId == qi.Id);
                            var correctChoice = db.ChoiceQuestionsCorrectChoices.Single(q => q.QuestionId == qi.Id);

                            questionInfo = new IudicoChoiceQuestion
                            {
                                QuestionText = qi.Text,
                                MaxScore = qi.MaxScore,
                                Type = IudicoQuestionType.IudicoChoice,
                                CorrectChoice = correctChoice.CorrectChoice,
                                Options = (from o in options
                                           select new Tuple<string, string>(o.Option, o.Description)).ToList()
                            };
                            break;

                        case 3:
                            var compiledTests = db.CompiledTestQuestions.Where(q => q.QuestionId == qi.Id);

                            questionInfo = new IudicoCompiledTest
                            {
                                QuestionText = qi.Text,
                                MaxScore = qi.MaxScore,
                                Type = IudicoQuestionType.IudicoCompile,
                                TestInputs = (from ct in compiledTests
                                              select new Tuple<string, string>("testInput" + ct.TestNumber, ct.TestInput)).ToList(),
                                TestOutputs = (from ct in compiledTests
                                               select new Tuple<string, string>("testOutput" + ct.TestNumber, ct.TestOutput)).ToList(),
                            };
                            break;
                    }

                    nodeInfo.QuestionsInfo.Add(questionInfo);
                }

                courseInfo.NodesInfo.Add(nodeInfo);
            }

            return courseInfo;
        }
Beispiel #2
0
        private static IudicoNodeInfo ParseNode(Node node, ICourseStorage storage)
        {
            IudicoNodeInfo ni = new IudicoNodeInfo();
            ni.Id = node.Id;
            ni.CourseId = node.CourseId;

            var path = storage.GetNodePath(node.Id) + ".html";
            TextReader reader = File.OpenText(path);
            XmlDocument xmlDoc = FromHtml(reader);

            // find iudico object nodes <object iudico-question="..." ... >
            foreach (XmlElement el in xmlDoc.GetElementsByTagName("object"))
            {
                bool iudicoQuestion = false;
                IudicoQuestionInfo qi = null;

                // check if it is iudico object
                if (el.Attributes["iudico-question"] != null && el.Attributes["iudico-question"].Value == "true")
                {
                    iudicoQuestion = true;
                    switch (el.Attributes["iudico-type"].Value)
                    {
                        case "iudico-simple":
                            qi = new IudicoSimpleQuestion { Type = IudicoQuestionType.IudicoSimple };
                            break;

                        case "iudico-choice":
                            qi = new IudicoChoiceQuestion { Type = IudicoQuestionType.IudicoChoice };
                            break;

                        case "iudico-compile":
                            qi = new IudicoCompiledTest { Type = IudicoQuestionType.IudicoCompile };
                            break;
                    }
                }

                if (iudicoQuestion == true)
                {
                    // <param name="..." value="..." />
                    foreach (XmlNode xmlNode in el.ChildNodes)
                    {
                        if (xmlNode.Attributes["name"] != null && xmlNode.Attributes["name"].Value == "rank")
                        {
                            double score = 0;
                            double.TryParse(xmlNode.Attributes["value"].Value, out score);
                            qi.MaxScore += score;
                        }
                        if (xmlNode.Attributes["name"] != null && xmlNode.Attributes["name"].Value == "question")
                        {
                            qi.QuestionText = xmlNode.Attributes["value"].Value;
                        }

                        switch (qi.Type)
                        {
                            case IudicoQuestionType.IudicoSimple:
                                if (xmlNode.Attributes["name"] != null && xmlNode.Attributes["name"].Value == "correctAnswer")
                                {
                                    (qi as IudicoSimpleQuestion).CorrectAnswer = xmlNode.Attributes["value"].Value;
                                }
                                break;

                            case IudicoQuestionType.IudicoChoice:
                                if (xmlNode.Attributes["name"] != null && xmlNode.Attributes["name"].Value == "correct")
                                {
                                    (qi as IudicoChoiceQuestion).CorrectChoice = xmlNode.Attributes["value"].Value;
                                }
                                if (xmlNode.Attributes["name"] != null && xmlNode.Attributes["name"].Value.StartsWith("option"))
                                {
                                    (qi as IudicoChoiceQuestion).Options.Add(new Tuple<string, string>(xmlNode.Attributes["name"].Value, xmlNode.Attributes["value"].Value));
                                }
                                break;

                            case IudicoQuestionType.IudicoCompile:
                                if (xmlNode.Attributes["name"] != null && xmlNode.Attributes["name"].Value.StartsWith("testInput"))
                                {
                                    (qi as IudicoCompiledTest).TestInputs.Add(new Tuple<string, string>(xmlNode.Attributes["name"].Value, xmlNode.Attributes["value"].Value));
                                }
                                if (xmlNode.Attributes["name"] != null && xmlNode.Attributes["name"].Value.StartsWith("testOutput"))
                                {
                                    (qi as IudicoCompiledTest).TestOutputs.Add(new Tuple<string, string>(xmlNode.Attributes["name"].Value, xmlNode.Attributes["value"].Value));
                                }
                                break;
                        }
                    }
                    ni.QuestionsInfo.Add(qi);
                }
            }

            return ni;
        }