/** * Parses a condition list in string format for a puzzle in the scene graph, and returns a list of * PuzzleConditions. Note that it is important that the nodes described have been declared before * the puzzle in the XML file. * * @param conditionListString The string to parse. * @param sceneGraph The scene graph in which to look for the target nodes. * @return A list of PuzzleConditions describing the conditions in the list. */ @SuppressWarnings("unchecked") public static List<Puzzle.PuzzleCondition> parseConditionList( String conditionListString, SceneNode sceneGraph) { String[] conditions = conditionListString.replaceAll("\\s+", "").split(";"); List<Puzzle.PuzzleCondition> conditionsList = new ArrayList<>(); for (String conditionString : conditions) { String[] components = conditionString.split(","); Class typeClass = Boolean.class; int index = 0; if (components.length == 4) { try { typeClass = Class.forName("java.lang." + components[index++]); } catch (ClassNotFoundException e) { System.err.println("Error parsing condition list: " + e); } } else if (components.length != 3) { System.err.println( "Error reading condition string " + conditionString + ": a condition must have three components."); break; } Optional<SceneNode> targetObject = sceneGraph.nodeWithID(components[index++]); if (!targetObject.isPresent()) { System.err.println( "Error parsing condition list: could not find object with id " + components[index - 1]); break; } SceneNode sceneNode = targetObject.get(); String getterName = components[index++]; Supplier supplier; try { Method getter = sceneNode.getClass().getMethod(getterName); supplier = () -> { try { return getter.invoke(sceneNode); } catch (IllegalAccessException | InvocationTargetException e) { throw new RuntimeException( "Error retrieving property using getter " + getterName + ": " + e); } }; } catch (NoSuchMethodException e) { System.err.println("Error parsing condition list: " + e); break; } Object desiredValue = ParserManager.convertFromString(components[index], typeClass); conditionsList.add(new Puzzle.PuzzleCondition(supplier, desiredValue, conditionString)); } return conditionsList; }
@Override public Object parse(final Element element) { // assert element.getName().equalsIgnoreCase("questestinterop"); final Section section = new Section(); // attributes section.setIdent(element.attribute("ident").getValue()); section.setTitle(element.attribute("title").getValue()); // elements // DURATION final QTIObject duration = (QTIObject) parserManager.parse(element.element("duration")); section.setDuration(duration); final List sectioncontrolsXML = element.elements("sectioncontrol"); final List sectioncontrols = new ArrayList(); for (final Iterator i = sectioncontrolsXML.iterator(); i.hasNext(); ) { sectioncontrols.add(parserManager.parse((Element) i.next())); } if (sectioncontrols.size() == 0) { sectioncontrols.add(new Control()); } section.setSectioncontrols(sectioncontrols); // SELECTION ORDERING final SelectionOrdering selectionOrdering = (SelectionOrdering) parserManager.parse(element.element("selection_ordering")); if (selectionOrdering != null) { section.setSelection_ordering(selectionOrdering); } else { section.setSelection_ordering(new SelectionOrdering()); } // SECTIONS final List sectionsXML = element.elements("section"); final List sections = new ArrayList(); for (final Iterator i = sectionsXML.iterator(); i.hasNext(); ) { sections.add(parserManager.parse((Element) i.next())); } section.setSections(sections); // ITEMS final List itemsXML = element.elements("item"); final List items = new ArrayList(); for (final Iterator i = itemsXML.iterator(); i.hasNext(); ) { items.add(parserManager.parse((Element) i.next())); } section.setItems(items); // OBJECTIVES final Element mattext = (Element) element.selectSingleNode("./objectives/material/mattext"); if (mattext != null) { section.setObjectives(mattext.getTextTrim()); } // FEEDBACKS final List feedbacksXML = element.elements("sectionfeedback"); final List feedbacks = new ArrayList(); for (final Iterator i = feedbacksXML.iterator(); i.hasNext(); ) { final QTIObject tmp = (QTIObject) parserManager.parse((Element) i.next()); feedbacks.add(tmp); } section.setSectionfeedbacks(feedbacks); // OUTCOMES_PROCESSING // TODO: maybe we should use the OutcomesProcessing object and parser here? Same as on // assessment level? final QTIObject outcomes_processing = (QTIObject) parserManager.parse(element.element("outcomes_processing")); section.setOutcomes_processing(outcomes_processing); return section; }