src/main/java/at/ionas999/questioncatalog/controller/ViewController.java

@@ -1,87 +1,27 @@
 package at.ionas999.questioncatalog.controller;
 
 import at.ionas999.questioncatalog.model.Question;
-import at.ionas999.questioncatalog.model.QuestionCatalog;
-import at.ionas999.questioncatalog.services.QuestionCatalogService;
 import at.ionas999.questioncatalog.services.QuestionService;
-import at.ionas999.questioncatalog.services.ServiceBase;
-import javafx.collections.FXCollections;
-import javafx.collections.ObservableList;
-import javafx.event.ActionEvent;
 import javafx.fxml.FXML;
-import javafx.scene.control.*;
+import javafx.scene.control.Button;
+import javafx.scene.control.ListView;
+import javafx.scene.control.TextArea;
+import javafx.scene.control.TextField;
 
 import java.sql.SQLException;
-import java.util.ArrayList;
 import java.util.List;
 
 public class ViewController{
-    @FXML
+    public Button editButton;
-    private ComboBox selectBox;
+    public Button deleteButton;
-    @FXML
+    public TextField answerField;
-    private Button editButton;
+    public ListView questionListView;
-    @FXML
+    public TextField questionField;
-    private Button deleteButton;
-    @FXML
-    private TextField answerField;
-    @FXML
-    private ListView questionListView;
-    @FXML
-    private TextField questionField;
 
-    private Question currentQuestion = null;
-    private ObservableList<QuestionCatalog> catalogs;
-    private ObservableList<Question> questions;
 
     @FXML
     private void initialize() throws SQLException {
-        this.catalogs = FXCollections.observableList(QuestionCatalogService.GetCatalogsWithoutQuestions());
+        List<Question> questions = QuestionService.GetQuestionsFromCatalog(1);
-        selectBox.setItems(catalogs);
+        System.out.println(questions);
-        addObserverToSelectBox();
-        addListenerToListView();
-    }
-
-    private void addListenerToListView() {
-        questionListView.getSelectionModel().selectedItemProperty().addListener((observableValue, oldValue, newValue) -> {
-            currentQuestion = (Question) newValue;
-            if (newValue != null) {
-                Question q = (Question) newValue;
-                questionField.setText(q.getQuestion());
-                answerField.setText(q.getAnswer());
-            }
-        });
-    }
-
-    private void addObserverToSelectBox() {
-        selectBox.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, newValue) -> {
-            if (newValue == null) {
-                return;
-            }
-
-            try {
-                setQuestionListView(((QuestionCatalog) newValue).getId());
-            } catch (SQLException e) {
-                throw new RuntimeException(e);
-            }
-        });
-    }
-
-    private void setQuestionListView(int catalogId) throws SQLException {
-        this.questions = FXCollections.observableList(QuestionService.GetQuestionsFromCatalog(catalogId));
-        questionListView.setItems(questions);
-    }
-
-
-    @FXML
-    private void deleteQuestion(ActionEvent actionEvent) {
-        questions.remove(currentQuestion);
-        QuestionService.DeleteQuestion(currentQuestion.getId());
-        this.questionListView.refresh();
-        this.currentQuestion = null;
-    }
-
-    @FXML
-    private void editQuestion(ActionEvent actionEvent) {
-
     }
 }

src/main/java/at/ionas999/questioncatalog/model/Question.java

@@ -32,17 +32,4 @@ public class Question {
     public void setAnswer(String answer) {
         this.answer = answer;
     }
-
-    public void setQuestionCatalogId(int questionCatalogId) {
-        this.questionCatalogId = questionCatalogId;
-    }
-
-    public int getId()
-    {
-        return id;
-    }
-    @Override
-    public String toString() {
-        return question;
-    }
 }

src/main/java/at/ionas999/questioncatalog/model/QuestionCatalog.java

@@ -11,8 +11,7 @@ public class QuestionCatalog {
     private ArrayList<Question> questions;
     private String name;
 
-    public QuestionCatalog(int id, String name, ArrayList<Question> questions) {
+    public QuestionCatalog(String name, ArrayList<Question> questions) {
-        this.id = id;
         this.name = name;
         this.questions = questions;
     }
@@ -21,20 +20,8 @@ public class QuestionCatalog {
         return FXCollections.observableList(questions);
     }
 
-    public void setQuestions(ArrayList<Question> questions){
-        this.questions = questions;
-    }
-
-    public int getId(){
-        return this.id;
-    }
-
     public String getName() {
         return name;
     }
 
-    @Override
-    public String toString() {
-        return this.getName();
-    }
 }

src/main/java/at/ionas999/questioncatalog/services/QuestionCatalogService.java

@@ -1,75 +0,0 @@
-package at.ionas999.questioncatalog.services;
-
-import at.ionas999.questioncatalog.model.Question;
-import at.ionas999.questioncatalog.model.QuestionCatalog;
-
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
-import java.sql.SQLException;
-import java.util.ArrayList;
-import java.util.List;
-
-public class QuestionCatalogService {
-    public static boolean AddQuestionCatalogToDb(QuestionCatalog catalog) throws SQLException {
-        try (Connection connection = ServiceBase.GetJDBCConnection()) {
-            String insertStmt = "insert into QUESTIONCATALOG (NAME) VALUES (?)";
-
-            try (PreparedStatement statement = connection.prepareStatement(insertStmt)) {
-                statement.setString(2, catalog.getName());
-                statement.execute();
-            }
-        }
-        int id = GetLastInsertedCatalogWithoutQuestions(catalog.getName()).getId();
-        for(Question q : catalog.getQuestions()) {
-            q.setQuestionCatalogId(id);
-            QuestionService.AddQuestionToDb(q);
-        }
-
-        return true;
-    }
-
-
-    public static QuestionCatalog GetLastInsertedCatalogWithoutQuestions(String name) throws SQLException {
-        String stmtString = "select id, name from QUESTIONCATALOG order by ID desc fetch first row only";
-        QuestionCatalog catalog;
-        try (Connection connection = ServiceBase.GetJDBCConnection()) {
-
-            try (PreparedStatement statement = connection.prepareStatement(stmtString)) {
-                ResultSet rs = statement.executeQuery();
-                List<Question> questions = new ArrayList<Question>();
-                rs.next();
-                catalog = new QuestionCatalog(
-                        rs.getInt(1),
-                        rs.getString(2),
-                        null
-                );
-
-            }
-        }
-        return catalog;
-    }
-
-    public static ArrayList<QuestionCatalog> GetCatalogsWithoutQuestions() throws SQLException {
-        String stmtString = "select id, name from QUESTIONCATALOG";
-
-        try (Connection connection = ServiceBase.GetJDBCConnection()) {
-
-            try (PreparedStatement statement = connection.prepareStatement(stmtString)) {
-                ResultSet rs = statement.executeQuery();
-                ArrayList<QuestionCatalog> catalogs = new ArrayList<>();
-
-                while (rs.next()) {
-                    QuestionCatalog catalog = new QuestionCatalog(
-                            rs.getInt(1),
-                            rs.getString(2),
-                            null
-                    );
-                    catalogs.add(catalog);
-                }
-
-                return catalogs;
-            }
-        }
-    }
-}

src/main/java/at/ionas999/questioncatalog/services/QuestionService.java

@@ -26,7 +26,7 @@ public class QuestionService {
         return true;
     }
 
-    public static ArrayList<Question> GetQuestionsFromCatalog(int catalogId) throws SQLException {
+    public static List<Question> GetQuestionsFromCatalog(int catalogId) throws SQLException {
         String stmtString = "select id, questionCatalogId, question, answer from Question where questionCatalogId = ?";
 
         try(Connection connection = ServiceBase.GetJDBCConnection()){
@@ -34,7 +34,7 @@ public class QuestionService {
             try (PreparedStatement statement = connection.prepareStatement(stmtString)){
                 statement.setInt(1, catalogId);
                 ResultSet rs = statement.executeQuery();
-                ArrayList<Question> questions = new ArrayList<Question>();
+                List<Question> questions = new ArrayList<Question>();
 
                 while (rs.next()){
                     Question question = new Question(
@@ -50,20 +50,4 @@ public class QuestionService {
             }
         }
     }
-
-    public static boolean DeleteQuestion(int id){
-        try(Connection connection = ServiceBase.GetJDBCConnection()){
-            String insertStmt = "delete from QUESTION where ID = ?";
-
-            try (PreparedStatement statement = connection.prepareStatement(insertStmt)){
-                statement.setInt(1, id);
-                statement.execute();
-            }
-        }
-        catch (SQLException _){
-            return false;
-        }
-
-        return true;
-    }
 }

src/main/java/at/ionas999/questioncatalog/services/ServiceBase.java

@@ -20,7 +20,7 @@ public abstract class ServiceBase {
                     create table QuestionCatalog
                     (
                         id INT PRIMARY KEY GENERATED ALWAYS AS IDENTITY (START WITH 1, INCREMENT BY 1),
-                        name varchar(10) not null unique
+                        name varchar(10) not null
                     )
                     """;
             try (Statement stmt = connection.createStatement()) {

src/main/resources/at/ionas999/questioncatalog/view.fxml

@@ -7,15 +7,6 @@
             fx:controller="at.ionas999.questioncatalog.controller.ViewController"
             prefHeight="400.0" prefWidth="600.0">
 
-    <top>
-        <HBox alignment="TOP_RIGHT" spacing="10.0">
-            <padding>
-                <Insets top="10.0" right="10.0" bottom="0.0" left="10.0"/>
-            </padding>
-            <ComboBox fx:id="selectBox" promptText="Select an Catalog" />
-        </HBox>
-    </top>
-
     <left>
         <ListView fx:id="questionListView" prefWidth="200.0" />
     </left>
@@ -28,8 +19,8 @@
             <TextField fx:id="questionField" editable="false" />
             <TextField fx:id="answerField" promptText="Answer" editable="false" />
             <HBox spacing="10.0" alignment="BOTTOM_RIGHT">
-                <Button fx:id="deleteButton" onAction="#deleteQuestion" text="Delete" />
+                <Button fx:id="deleteButton" text="Delete" />
-                <Button fx:id="editButton" text="Edit" onAction="#editQuestion"   />
+                <Button fx:id="editButton" text="Edit" />
             </HBox>
         </VBox>
     </center>