Java tutorial
package at.jku.ce.adaptivetesting.vaadin.ui.topic.accounting; /*This file is part of the project "Reisisoft Adaptive Testing", * which is licenced under LGPL v3+. You may find a copy in the source, * or obtain one at http://www.gnu.org/licenses/lgpl-3.0-standalone.html */ import java.io.BufferedReader; import java.io.File; import java.io.FileFilter; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.StringReader; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.HashMap; import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBException; import javax.xml.bind.Unmarshaller; import javax.xml.bind.annotation.XmlRootElement; import at.jku.ce.adaptivetesting.core.StudentData; import at.jku.ce.adaptivetesting.html.HtmlLabel; import at.jku.ce.adaptivetesting.vaadin.ui.core.VaadinUI; import com.vaadin.ui.*; import org.apache.commons.io.ByteOrderMark; import org.apache.commons.io.input.BOMInputStream; import at.jku.ce.adaptivetesting.core.LogHelper; import at.jku.ce.adaptivetesting.topic.accounting.AccountingDataProvider; import at.jku.ce.adaptivetesting.topic.accounting.AccountingDataStorage; import at.jku.ce.adaptivetesting.topic.accounting.AccountingQuestion; import at.jku.ce.adaptivetesting.topic.accounting.ProfitDataStorage; import at.jku.ce.adaptivetesting.topic.accounting.ProfitQuestion; import at.jku.ce.adaptivetesting.vaadin.ui.QuestionManager; import at.jku.ce.adaptivetesting.xml.topic.accounting.AccountingXmlHelper; import at.jku.ce.adaptivetesting.xml.topic.accounting.XmlAccountingQuestion; import at.jku.ce.adaptivetesting.xml.topic.accounting.XmlProfitQuestion; import com.vaadin.shared.ui.label.ContentMode; import com.vaadin.ui.Notification.Type; public class AccountingQuestionManager extends QuestionManager { private static final long serialVersionUID = -4764723794449575244L; private String studentIDCode = new String(); private Map studentGradesLastYear; private Map studentGradesLastTest; private String studentClass = new String(); private String studentGender = new String(); private StudentData student; public AccountingQuestionManager(String quizName) { super(quizName); Button openKontenplan = new Button("Kontenplan ffnen"); openKontenplan.addClickListener(e -> { openKontenplan.setEnabled(false); // Create Window with layout Window window = new Window("Kontenplan"); GridLayout layout = new GridLayout(1, 1); layout.addComponent(AccountingDataProvider.getInstance().toHtmlTable()); layout.setSizeFull(); window.setContent(layout); window.center(); window.setWidth("60%"); window.setHeight("80%"); window.setResizable(false); window.addCloseListener(e1 -> openKontenplan.setEnabled(true)); getUI().addWindow(window); }); addHelpButton(openKontenplan); } @Override public void startQuiz(StudentData student) { // Remove everything from the layout, save it for displaying after // clicking OK final Component[] components = new Component[getComponentCount()]; for (int i = 0; i < components.length; i++) { components[i] = getComponent(i); } removeAllComponents(); // Create first page VerticalLayout layout = new VerticalLayout(); addComponent(layout); ComboBox gender = new ComboBox("Geschlecht"); String[] genderItems = { "mnnlich", "weiblich" }; gender.addItems(genderItems); //gender.setSizeFull(); gender.setEnabled(true); Label gradeLastYear = new Label("<p/>Welche Note hattest du im letzten Zeugnis in ...", ContentMode.HTML); TextField gradeLastYearRW = new TextField("Rechungswesen"); TextField gradeLastYearBWL = new TextField("BWL/BVW"); TextField gradeLastYearD = new TextField("Deutsch"); TextField gradeLastYearE = new TextField("Englisch"); TextField gradeLastYearM = new TextField("Mathematik"); Label gradeLastTest = new Label("<p/>Welche Note hattest du auf die letzte Schularbeit aus ...", ContentMode.HTML); TextField gradeLastTestRW = new TextField("Rechungswesen"); TextField gradeLastTestBWL = new TextField("BWL/BVW"); TextField gradeLastTestD = new TextField("Deutsch"); TextField gradeLastTestE = new TextField("Englisch"); TextField gradeLastTestM = new TextField("Mathematik"); Label classNameLabel = new Label("<p/>Welche Klasse besuchst du?", ContentMode.HTML); TextField className = new TextField("(z.B. 4A)"); Label studentCode = new Label( "<p/>Damit deine Antworten mit spteren Fragebogenergebnissen verknpft werden knnen, ist es notwendig, einen anonymen Benutzernamen anzulegen. Erstelle deinen persnlichen Code nach folgendem Muster:", ContentMode.HTML); TextField studentCodeC1 = new TextField( "Tag und Monat der Geburt (DDMM), z.B. \"1008\" fr Geburtstag am 10. August"); TextField studentCodeC2 = new TextField( "Zwei Anfangsbuchstaben des Vornamens, z.B. \"St\" fr \"Stefan\""); TextField studentCodeC3 = new TextField( "Zwei Anfangsbuchstaben des Vornamens der Mutter,, z.B. \"Jo\" fr \"Johanna\""); Label thankYou = new Label("<p/>Danke fr die Angaben.<p/>", ContentMode.HTML); Button cont = new Button("Weiter", e -> { removeAllComponents(); studentIDCode = new String( studentCodeC1.getValue() + studentCodeC2.getValue() + studentCodeC3.getValue()); studentGender = (gender.getValue() == null) ? new String("undefined") : gender.getValue().toString(); studentClass = className.getValue(); studentGradesLastYear = new HashMap(); studentGradesLastYear.put("RW", gradeLastYearRW.getValue()); studentGradesLastYear.put("BWL", gradeLastYearBWL.getValue()); studentGradesLastYear.put("D", gradeLastYearD.getValue()); studentGradesLastYear.put("E", gradeLastYearE.getValue()); studentGradesLastYear.put("M", gradeLastYearM.getValue()); studentGradesLastTest = new HashMap(); studentGradesLastTest.put("RW", gradeLastTestRW.getValue()); studentGradesLastTest.put("BWL", gradeLastTestBWL.getValue()); studentGradesLastTest.put("D", gradeLastTestD.getValue()); studentGradesLastTest.put("E", gradeLastTestE.getValue()); studentGradesLastTest.put("M", gradeLastTestM.getValue()); this.student = new StudentData(studentIDCode, studentGender, studentClass, studentGradesLastYear, studentGradesLastTest); LogHelper.logInfo("StudentData: " + this.student.toString()); displayCompanyInfo(components); }); layout.addComponent(HtmlLabel.getCenteredLabel("h1", "Fragen zu deiner Person"));// Title of the quiz layout.addComponent(gender); layout.addComponent(gradeLastYear); layout.addComponent(gradeLastYearRW); layout.addComponent(gradeLastYearBWL); layout.addComponent(gradeLastYearD); layout.addComponent(gradeLastYearE); layout.addComponent(gradeLastYearM); layout.addComponent(gradeLastTest); layout.addComponent(gradeLastTestRW); layout.addComponent(gradeLastTestBWL); layout.addComponent(gradeLastTestD); layout.addComponent(gradeLastTestE); layout.addComponent(gradeLastTestM); layout.addComponent(classNameLabel); layout.addComponent(className); layout.addComponent(studentCode); layout.addComponent(studentCodeC1); layout.addComponent(studentCodeC2); layout.addComponent(studentCodeC3); layout.addComponent(thankYou); layout.addComponent(cont); layout.setComponentAlignment(components[0], Alignment.MIDDLE_CENTER); } public void displayCompanyInfo(Component[] components) { // Create second page VerticalLayout layout = new VerticalLayout(); addComponent(layout); Label label = new Label( "Stelle dir vor, du hast dich mit dem Handel von Tablet-PCs aller Art selbstndig gemacht und dazu das Einzelunternehmen World of Tabs e. U. vor zwei Jahren gegrndet. Da du dich in Rechnungswesen schon gut auskennst, beschliet du selbst die Buchhaltung zu fhren.<p/>", ContentMode.HTML); Label companyData = new Label( "<table><tr><td>Firmenname:</td><td>World of Tabs</td></tr><tr><td>Adresse:</td><td>Unterfeld 15</td></tr><tr><td></td><td>4541 Adlwang</td></tr><tr><td>E-mail:</td><td>office@worldtabs.at</td></tr><tr><td>Internet:</td><td>www.worldtabs.at</td></tr><tr><td>UID-Nummer:</td><td>ATU32589716</td></tr></table><p/>", ContentMode.HTML); Label descr = new Label( "<i>World of Tabs dient im Folgenden als Modellunternehmen, <b>aus dessen Sicht</b> du die Aufgabenstellungen bearbeiten sollst. Wir bitten dich die Aufgaben <b>alleine, ohne Hilfe</b> von Mitschler/inne/n oder Lehrer/inne/n zu lsen. Du kannst den Kontenplan und einen Taschenrechner verwenden.</i><p/>", ContentMode.HTML); Label disclaimer = new Label( "<b>Wichtig ist, dass du im Folgenden bei der Angabe der Kontennummer und des Kontennamens die genaue Nummer bzw. Bezeichnung verwendest. Bspw. wird eine Aufgabe falsch gewertet, wenn du die Nummer 30 anstatt 33 fr das Lieferverbindlichkeiten whlst oder du den Kontennamen \"Lieferverbindlichkeiten\" anstatt \"AATech\" (bei personifiziertem Lieferantenkonto) fr den Lieferanten whlst.<b>", ContentMode.HTML); Button cont = new Button("Weiter", e -> { removeAllComponents(); for (Component c : components) { addComponent(c); } super.startQuiz(student); }); // layout.addComponent(components[0]);// Title of the quiz layout.addComponent(HtmlLabel.getCenteredLabel("h1", "Unternehmensbeschreibung"));// Title of the quiz layout.addComponent(companyData); layout.addComponent(label); layout.addComponent(descr); layout.addComponent(disclaimer); layout.addComponent(cont); layout.setComponentAlignment(components[0], Alignment.MIDDLE_CENTER); } public int loadQuestions(File containingFolder) throws JAXBException, IOException { assert containingFolder.exists() && containingFolder.isDirectory(); JAXBContext accountingJAXB = JAXBContext.newInstance(XmlAccountingQuestion.class, AccountingDataStorage.class); JAXBContext profitJAXB = JAXBContext.newInstance(XmlProfitQuestion.class, ProfitDataStorage.class); Unmarshaller accountingUnmarshaller = accountingJAXB.createUnmarshaller(); Unmarshaller profitUnmarshaller = profitJAXB.createUnmarshaller(); final List<AccountingQuestion> accountingList = new ArrayList<>(); final List<ProfitQuestion> profitList = new ArrayList<>(); String accountingRootElement = XmlAccountingQuestion.class.getAnnotation(XmlRootElement.class).name(); String profitRootElement = XmlProfitQuestion.class.getAnnotation(XmlRootElement.class).name(); File[] questions = containingFolder .listFiles(f -> f.isFile() && (f.canRead() || f.setReadable(true)) && f.getName().endsWith(".xml")); // read all questions LogHelper.logInfo("Found " + questions.length + " potential questions"); int successfullyLoaded = 0; for (File f : questions) { LogHelper.logInfo("Loading question with filename: " + f.getName()); BufferedReader reader = null; StringBuilder sb = new StringBuilder(); try { reader = new BufferedReader(new InputStreamReader( new BOMInputStream(new FileInputStream(f), ByteOrderMark.UTF_8), "UTF8")); String line = null; while ((line = reader.readLine()) != null) { sb.append(line); } } finally { if (reader != null) { reader.close(); } } String fileAsString = sb.toString().replaceAll("& ", "& "); if (fileAsString.contains(profitRootElement)) { LogHelper.logInfo("Question detected as " + ProfitQuestion.class.getName()); // Profit Question XmlProfitQuestion question = (XmlProfitQuestion) profitUnmarshaller .unmarshal(new StringReader(fileAsString)); profitList.add(AccountingXmlHelper.fromXml(question, f.getName())); successfullyLoaded++; } else if (fileAsString.contains(accountingRootElement)) { LogHelper.logInfo("Question detected as " + AccountingQuestion.class.getName()); // Accounting Question XmlAccountingQuestion question = (XmlAccountingQuestion) accountingUnmarshaller .unmarshal(new StringReader(fileAsString)); accountingList.add(AccountingXmlHelper.fromXml(question, f.getName())); successfullyLoaded++; } else { LogHelper.logInfo( "QuestionManager: item type not supported for " + f.getName() + ", ignoring file."); // throw new IllegalArgumentException( // "Question type not supported. File: " + f); continue; } LogHelper.logInfo("Loaded question with filename:" + f.getName()); } // Add question to the question manager accountingList.forEach(q -> addQuestion(q)); profitList.forEach(q -> addQuestion(q)); LogHelper.logInfo("Successfully loaded " + successfullyLoaded + " questions."); return questions.length; } @Override public void loadQuestions() { try { loadQuestions(new File(VaadinUI.Servlet.getQuestionFolderName())); } catch (JAXBException | IOException e1) { Notification.show("Questions could not be loaded - FATAL error", e1.getMessage(), Type.ERROR_MESSAGE); LogHelper.logThrowable(e1); } } }