src/main/java/de/hitec/nhplus/datastorage/Dao.java

@@ -6,11 +6,11 @@ import java.util.List;
 public interface Dao<T> {
     void create(T t) throws SQLException;
 
-    T read(long key) throws SQLException;
+    T read(int id) throws SQLException;
 
     List<T> readAll() throws SQLException;
 
     void update(T t) throws SQLException;
 
-    void deleteById(long key) throws SQLException;
+    void deleteById(int id) throws SQLException;
 }

src/main/java/de/hitec/nhplus/datastorage/DaoImp.java

@@ -17,7 +17,7 @@ public abstract class DaoImp<T> implements Dao<T> {
     }
 
     @Override
-    public T read(long key) throws SQLException {
+    public T read(int key) throws SQLException {
         T object = null;
         ResultSet result = getReadByIDStatement(key).executeQuery();
         if (result.next()) {
@@ -37,7 +37,7 @@ public abstract class DaoImp<T> implements Dao<T> {
     }
 
     @Override
-    public void deleteById(long key) throws SQLException {
+    public void deleteById(int key) throws SQLException {
         getDeleteStatement(key).executeUpdate();
     }
 
@@ -47,11 +47,11 @@ public abstract class DaoImp<T> implements Dao<T> {
 
     protected abstract PreparedStatement getCreateStatement(T t);
 
-    protected abstract PreparedStatement getReadByIDStatement(long key);
+    protected abstract PreparedStatement getReadByIDStatement(int key);
 
     protected abstract PreparedStatement getReadAllStatement();
 
     protected abstract PreparedStatement getUpdateStatement(T t);
 
-    protected abstract PreparedStatement getDeleteStatement(long key);
+    protected abstract PreparedStatement getDeleteStatement(int key);
 }

src/main/java/de/hitec/nhplus/fixtures/PatientFixture.java

@@ -32,7 +32,7 @@ public class PatientFixture implements Fixture<Patient>
     public void setupTable(Connection connection)
     {
         final String SQL = "CREATE TABLE IF NOT EXISTS patient (" +
-            "   pid INTEGER PRIMARY KEY AUTOINCREMENT, " +
+            "   id INTEGER PRIMARY KEY AUTOINCREMENT, " +
             "   firstname TEXT NOT NULL, " +
             "   surname TEXT NOT NULL, " +
             "   dateOfBirth TEXT NOT NULL, " +

src/main/java/de/hitec/nhplus/fixtures/TreatmentFixture.java

@@ -41,14 +41,14 @@ public class TreatmentFixture implements Fixture<Treatment>
     public void setupTable(Connection connection)
     {
         final String SQL = "CREATE TABLE IF NOT EXISTS treatment (" +
-            "   tid INTEGER PRIMARY KEY AUTOINCREMENT, " +
+            "   id INTEGER PRIMARY KEY AUTOINCREMENT, " +
-            "   pid INTEGER NOT NULL, " +
+            "   patientId INTEGER NOT NULL, " +
             "   treatment_date TEXT NOT NULL, " +
             "   begin TEXT NOT NULL, " +
             "   end TEXT NOT NULL, " +
             "   description TEXT NOT NULL, " +
             "   remark TEXT NOT NULL," +
-            "   FOREIGN KEY (pid) REFERENCES patient (pid) ON DELETE CASCADE " +
+            "   FOREIGN KEY (patientId) REFERENCES patient (id) ON DELETE CASCADE " +
             ");";
 
         try (Statement statement = connection.createStatement())
@@ -73,7 +73,7 @@ public class TreatmentFixture implements Fixture<Treatment>
 
         treatments.add(new Treatment(
             1,
-            seppl.getPid(),
+            seppl.getId(),
             convertStringToLocalDate("2023-06-03"),
             convertStringToLocalTime("11:00"),
             convertStringToLocalTime("15:00"),
@@ -84,7 +84,7 @@ public class TreatmentFixture implements Fixture<Treatment>
         ));
         treatments.add(new Treatment(
             2,
-            seppl.getPid(),
+            seppl.getId(),
             convertStringToLocalDate("2023-06-05"),
             convertStringToLocalTime("11:00"),
             convertStringToLocalTime("12:30"),
@@ -95,7 +95,7 @@ public class TreatmentFixture implements Fixture<Treatment>
         ));
         treatments.add(new Treatment(
             3,
-            martina.getPid(),
+            martina.getId(),
             convertStringToLocalDate("2023-06-04"),
             convertStringToLocalTime("07:30"),
             convertStringToLocalTime("08:00"),
@@ -104,7 +104,7 @@ public class TreatmentFixture implements Fixture<Treatment>
         ));
         treatments.add(new Treatment(
             4,
-            seppl.getPid(),
+            seppl.getId(),
             convertStringToLocalDate("2023-06-06"),
             convertStringToLocalTime("15:10"),
             convertStringToLocalTime("16:00"),
@@ -113,7 +113,7 @@ public class TreatmentFixture implements Fixture<Treatment>
         );
         treatments.add(new Treatment(
             8,
-            seppl.getPid(),
+            seppl.getId(),
             convertStringToLocalDate("2023-06-08"),
             convertStringToLocalTime("15:00"),
             convertStringToLocalTime("16:00"),
@@ -122,7 +122,7 @@ public class TreatmentFixture implements Fixture<Treatment>
         );
         treatments.add(new Treatment(
             9,
-            martina.getPid(),
+            martina.getId(),
             convertStringToLocalDate("2023-06-07"),
             convertStringToLocalTime("11:00"),
             convertStringToLocalTime("11:30"),
@@ -131,7 +131,7 @@ public class TreatmentFixture implements Fixture<Treatment>
         );
         treatments.add(new Treatment(
             12,
-            hans.getPid(),
+            hans.getId(),
             convertStringToLocalDate("2023-06-08"),
             convertStringToLocalTime("15:00"),
             convertStringToLocalTime("15:30"),
@@ -140,7 +140,7 @@ public class TreatmentFixture implements Fixture<Treatment>
         );
         treatments.add(new Treatment(
             14,
-            ahmet.getPid(),
+            ahmet.getId(),
             convertStringToLocalDate("2023-08-24"),
             convertStringToLocalTime("09:30"),
             convertStringToLocalTime("10:15"),
@@ -148,7 +148,7 @@ public class TreatmentFixture implements Fixture<Treatment>
             "Lympfdrainage"));
         treatments.add(new Treatment(
             16,
-            elisabeth.getPid(),
+            elisabeth.getId(),
             convertStringToLocalDate("2023-08-31"),
             convertStringToLocalTime("13:30"),
             convertStringToLocalTime("13:45"),
@@ -157,7 +157,7 @@ public class TreatmentFixture implements Fixture<Treatment>
         );
         treatments.add(new Treatment(
             17,
-            elisabeth.getPid(),
+            elisabeth.getId(),
             convertStringToLocalDate("2023-09-01"),
             convertStringToLocalTime("16:00"),
             convertStringToLocalTime("17:00"),
@@ -169,7 +169,7 @@ public class TreatmentFixture implements Fixture<Treatment>
         Map<String, Treatment> treatmentsById = new HashMap<>();
         for (Treatment treatment : treatments){
             dao.create(treatment);
-            treatmentsById.put(String.valueOf(treatment.getTid()), treatment);
+            treatmentsById.put(String.valueOf(treatment.getId()), treatment);
         }
         return treatmentsById;
     }

src/main/java/de/hitec/nhplus/main/MainWindowController.java

@@ -19,7 +19,7 @@ public class MainWindowController {
 
     @FXML
     private void handleShowAllPatient(ActionEvent event) {
-        FXMLLoader loader = new FXMLLoader(Main.class.getResource("/de/hitec/nhplus/AllPatientView.fxml"));
+        FXMLLoader loader = new FXMLLoader(Main.class.getResource("/de/hitec/nhplus/patient/AllPatientView.fxml"));
         try {
             mainBorderPane.setCenter(loader.load());
         } catch (IOException exception) {
@@ -29,7 +29,7 @@ public class MainWindowController {
 
     @FXML
     private void handleShowAllTreatments(ActionEvent event) {
-        FXMLLoader loader = new FXMLLoader(Main.class.getResource("/de/hitec/nhplus/AllTreatmentView.fxml"));
+        FXMLLoader loader = new FXMLLoader(Main.class.getResource("/de/hitec/nhplus/treatment/AllTreatmentView.fxml"));
         try {
             mainBorderPane.setCenter(loader.load());
         } catch (IOException exception) {

src/main/java/de/hitec/nhplus/patient/AllPatientController.java

@@ -55,7 +55,7 @@ public class AllPatientController {
     public void initialize() {
         this.readAllAndShowInTableView();
 
-        this.columnId.setCellValueFactory(new PropertyValueFactory<>("pid"));
+        this.columnId.setCellValueFactory(new PropertyValueFactory<>("id"));
 
         this.columnFirstName.setCellValueFactory(new PropertyValueFactory<>("firstName"));
         this.columnFirstName.setCellFactory(TextFieldTableCell.forTableColumn());
@@ -189,7 +189,7 @@ public class AllPatientController {
         Patient selectedItem = this.tableView.getSelectionModel().getSelectedItem();
         if (selectedItem != null) {
             try {
-                DaoFactory.getDaoFactory().createPatientDAO().deleteById(selectedItem.getPid());
+                DaoFactory.getDaoFactory().createPatientDAO().deleteById(selectedItem.getId());
                 this.tableView.getItems().remove(selectedItem);
             } catch (SQLException exception) {
                 exception.printStackTrace();

src/main/java/de/hitec/nhplus/patient/Patient.java

@@ -3,6 +3,7 @@ package de.hitec.nhplus.patient;
 import de.hitec.nhplus.main.Person;
 import de.hitec.nhplus.treatment.Treatment;
 import de.hitec.nhplus.utils.DateConverter;
+import javafx.beans.property.SimpleIntegerProperty;
 import javafx.beans.property.SimpleLongProperty;
 import javafx.beans.property.SimpleStringProperty;
 
@@ -10,26 +11,13 @@ import java.time.LocalDate;
 import java.util.ArrayList;
 import java.util.List;
 
-/**
- * Patients live in a NURSING home and are treated by nurses.
- */
 public class Patient extends Person {
-    private SimpleLongProperty pid;
+    private SimpleIntegerProperty id;
     private final SimpleStringProperty dateOfBirth;
     private final SimpleStringProperty careLevel;
     private final SimpleStringProperty roomNumber;
     private final List<Treatment> allTreatments = new ArrayList<>();
 
-    /**
-     * Constructor to initiate an object of class <code>Patient</code> with the given parameter. Use this constructor
-     * to initiate objects, which are not persisted yet, because it will not have a patient id (pid).
-     *
-     * @param firstName   First name of the patient.
-     * @param surname     Last name of the patient.
-     * @param dateOfBirth Date of birth of the patient.
-     * @param careLevel   Care level of the patient.
-     * @param roomNumber  Room number of the patient.
-     */
     public Patient(
             String firstName,
             String surname,
@@ -43,19 +31,8 @@ public class Patient extends Person {
         this.roomNumber = new SimpleStringProperty(roomNumber);
     }
 
-    /**
-     * Constructor to initiate an object of class <code>Patient</code> with the given parameter. Use this constructor
-     * to initiate objects, which are already persisted and have a patient id (pid).
-     *
-     * @param pid         Patient id.
-     * @param firstName   First name of the patient.
-     * @param surname     Last name of the patient.
-     * @param dateOfBirth Date of birth of the patient.
-     * @param careLevel   Care level of the patient.
-     * @param roomNumber  Room number of the patient.
-     */
     public Patient(
-            long pid,
+            int id,
             String firstName,
             String surname,
             LocalDate dateOfBirth,
@@ -63,18 +40,18 @@ public class Patient extends Person {
             String roomNumber
     ) {
         super(firstName, surname);
-        this.pid = new SimpleLongProperty(pid);
+        this.id = new SimpleIntegerProperty(id);
         this.dateOfBirth = new SimpleStringProperty(DateConverter.convertLocalDateToString(dateOfBirth));
         this.careLevel = new SimpleStringProperty(careLevel);
         this.roomNumber = new SimpleStringProperty(roomNumber);
     }
 
-    public long getPid() {
+    public int getId() {
-        return pid.get();
+        return id.get();
     }
 
-    public SimpleLongProperty pidProperty() {
+    public SimpleIntegerProperty pidProperty() {
-        return pid;
+        return id;
     }
 
     public String getDateOfBirth() {
@@ -85,11 +62,6 @@ public class Patient extends Person {
         return dateOfBirth;
     }
 
-    /**
-     * Stores the given string as new <code>birthOfDate</code>.
-     *
-     * @param dateOfBirth as string in the following format: YYYY-MM-DD.
-     */
     public void setDateOfBirth(String dateOfBirth) {
         this.dateOfBirth.set(dateOfBirth);
     }
@@ -119,13 +91,6 @@ public class Patient extends Person {
         this.roomNumber.set(roomNumber);
     }
 
-
-    /**
-     * Adds a treatment to the list of treatments, if the list does not already contain the treatment.
-     *
-     * @param treatment Treatment to add.
-     * @return False, if the treatment was already part of the list, else true.
-     */
     public boolean add(Treatment treatment) {
         if (this.allTreatments.contains(treatment)) {
             return false;
@@ -135,7 +100,7 @@ public class Patient extends Person {
     }
 
     public String toString() {
-        return "Patient" + "\nMNID: " + this.pid +
+        return "Patient" + "\nMNID: " + this.id +
                 "\nFirstname: " + this.getFirstName() +
                 "\nSurname: " + this.getSurname() +
                 "\nBirthday: " + this.dateOfBirth +

src/main/java/de/hitec/nhplus/patient/PatientDao.java

@@ -1,34 +1,20 @@
 package de.hitec.nhplus.patient;
 
 import de.hitec.nhplus.datastorage.DaoImp;
-import de.hitec.nhplus.patient.Patient;
 import de.hitec.nhplus.utils.DateConverter;
 
-import java.sql.*;
+import java.sql.Connection;
-import java.time.LocalDate;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
 import java.util.ArrayList;
 
-/**
- * Implements the Interface <code>DaoImp</code>. Overrides methods to generate specific <code>PreparedStatements</code>,
- * to execute the specific SQL Statements.
- */
 public class PatientDao extends DaoImp<Patient> {
 
-    /**
-     * The constructor initiates an object of <code>PatientDao</code> and passes the connection to its super class.
-     *
-     * @param connection Object of <code>Connection</code> to execute the SQL-statements.
-     */
     public PatientDao(Connection connection) {
         super(connection);
     }
 
-    /**
-     * Generates a <code>PreparedStatement</code> to persist the given object of <code>Patient</code>.
-     *
-     * @param patient Object of <code>Patient</code> to persist.
-     * @return <code>PreparedStatement</code> to insert the given patient.
-     */
     @Override
     protected PreparedStatement getCreateStatement(Patient patient) {
         PreparedStatement preparedStatement = null;
@@ -47,31 +33,19 @@ public class PatientDao extends DaoImp<Patient> {
         return preparedStatement;
     }
 
-    /**
-     * Generates a <code>PreparedStatement</code> to query a patient by a given patient id (pid).
-     *
-     * @param pid Patient id to query.
-     * @return <code>PreparedStatement</code> to query the patient.
-     */
     @Override
-    protected PreparedStatement getReadByIDStatement(long pid) {
+    protected PreparedStatement getReadByIDStatement(int id) {
         PreparedStatement preparedStatement = null;
         try {
-            final String SQL = "SELECT * FROM patient WHERE pid = ?";
+            final String SQL = "SELECT * FROM patient WHERE id = ?";
             preparedStatement = this.connection.prepareStatement(SQL);
-            preparedStatement.setLong(1, pid);
+            preparedStatement.setInt(1, id);
         } catch (SQLException exception) {
             exception.printStackTrace();
         }
         return preparedStatement;
     }
 
-    /**
-     * Maps a <code>ResultSet</code> of one patient to an object of <code>Patient</code>.
-     *
-     * @param result ResultSet with a single row. Columns will be mapped to an object of class <code>Patient</code>.
-     * @return Object of class <code>Patient</code> with the data from the resultSet.
-     */
     @Override
     protected Patient getInstanceFromResultSet(ResultSet result) throws SQLException {
         return new Patient(
@@ -83,11 +57,6 @@ public class PatientDao extends DaoImp<Patient> {
                 result.getString(6));
     }
 
-    /**
-     * Generates a <code>PreparedStatement</code> to query all patients.
-     *
-     * @return <code>PreparedStatement</code> to query all patients.
-     */
     @Override
     protected PreparedStatement getReadAllStatement() {
         PreparedStatement statement = null;
@@ -100,33 +69,22 @@ public class PatientDao extends DaoImp<Patient> {
         return statement;
     }
 
-    /**
-     * Maps a <code>ResultSet</code> of all patients to an <code>ArrayList</code> of <code>Patient</code> objects.
-     *
-     * @param result ResultSet with all rows. The Columns will be mapped to objects of class <code>Patient</code>.
-     * @return <code>ArrayList</code> with objects of class <code>Patient</code> of all rows in the
-     * <code>ResultSet</code>.
-     */
     @Override
     protected ArrayList<Patient> getListFromResultSet(ResultSet result) throws SQLException {
         ArrayList<Patient> list = new ArrayList<>();
         while (result.next()) {
-            LocalDate date = DateConverter.convertStringToLocalDate(result.getString(4));
+            Patient patient = new Patient(
-            Patient patient = new Patient(result.getInt(1), result.getString(2),
+                    result.getInt(1),
-                    result.getString(3), date,
+                    result.getString(2),
-                    result.getString(5), result.getString(6));
+                    result.getString(3),
+                    DateConverter.convertStringToLocalDate(result.getString(4)),
+                    result.getString(5),
+                    result.getString(6));
             list.add(patient);
         }
         return list;
     }
 
-    /**
-     * Generates a <code>PreparedStatement</code> to update the given patient, identified
-     * by the id of the patient (pid).
-     *
-     * @param patient Patient object to update.
-     * @return <code>PreparedStatement</code> to update the given patient.
-     */
     @Override
     protected PreparedStatement getUpdateStatement(Patient patient) {
         PreparedStatement preparedStatement = null;
@@ -138,33 +96,27 @@ public class PatientDao extends DaoImp<Patient> {
                             "dateOfBirth = ?, " +
                             "carelevel = ?, " +
                             "roomnumber = ?, " +
-                            "WHERE pid = ?";
+                            "WHERE id = ?";
             preparedStatement = this.connection.prepareStatement(SQL);
             preparedStatement.setString(1, patient.getFirstName());
             preparedStatement.setString(2, patient.getSurname());
             preparedStatement.setString(3, patient.getDateOfBirth());
             preparedStatement.setString(4, patient.getCareLevel());
             preparedStatement.setString(5, patient.getRoomNumber());
-            preparedStatement.setLong(6, patient.getPid());
+            preparedStatement.setInt(6, patient.getId());
         } catch (SQLException exception) {
             exception.printStackTrace();
         }
         return preparedStatement;
     }
 
-    /**
-     * Generates a <code>PreparedStatement</code> to delete a patient with the given id.
-     *
-     * @param pid Id of the patient to delete.
-     * @return <code>PreparedStatement</code> to delete patient with the given id.
-     */
     @Override
-    protected PreparedStatement getDeleteStatement(long pid) {
+    protected PreparedStatement getDeleteStatement(int id) {
         PreparedStatement preparedStatement = null;
         try {
-            final String SQL = "DELETE FROM patient WHERE pid = ?";
+            final String SQL = "DELETE FROM patient WHERE id = ?";
             preparedStatement = this.connection.prepareStatement(SQL);
-            preparedStatement.setLong(1, pid);
+            preparedStatement.setInt(1, id);
         } catch (SQLException exception) {
             exception.printStackTrace();
         }

src/main/java/de/hitec/nhplus/treatment/AllTreatmentController.java

@@ -28,7 +28,7 @@ public class AllTreatmentController
     private TableColumn<Treatment, Integer> columnId;
 
     @FXML
-    private TableColumn<Treatment, Integer> columnPid;
+    private TableColumn<Treatment, Integer> columnPatientId;
 
     @FXML
     private TableColumn<Treatment, String> columnDate;
@@ -59,8 +59,8 @@ public class AllTreatmentController
         comboBoxPatientSelection.setItems(patientSelection);
         comboBoxPatientSelection.getSelectionModel().select(0);
 
-        this.columnId.setCellValueFactory(new PropertyValueFactory<>("tid"));
+        this.columnId.setCellValueFactory(new PropertyValueFactory<>("id"));
-        this.columnPid.setCellValueFactory(new PropertyValueFactory<>("pid"));
+        this.columnPatientId.setCellValueFactory(new PropertyValueFactory<>("patientId"));
         this.columnDate.setCellValueFactory(new PropertyValueFactory<>("date"));
         this.columnBegin.setCellValueFactory(new PropertyValueFactory<>("begin"));
         this.columnEnd.setCellValueFactory(new PropertyValueFactory<>("end"));
@@ -135,7 +135,7 @@ public class AllTreatmentController
         {
             try
             {
-                this.treatments.addAll(this.dao.readTreatmentsByPid(patient.getPid()));
+                this.treatments.addAll(this.dao.readTreatmentsByPid(patient.getId()));
             } catch (SQLException exception)
             {
                 exception.printStackTrace();
@@ -163,7 +163,7 @@ public class AllTreatmentController
         TreatmentDao dao = DaoFactory.getDaoFactory().createTreatmentDao();
         try
         {
-            dao.deleteById(t.getTid());
+            dao.deleteById(t.getId());
         } catch (SQLException exception)
         {
             exception.printStackTrace();
@@ -206,7 +206,7 @@ public class AllTreatmentController
     {
         try
         {
-            FXMLLoader loader = new FXMLLoader(Main.class.getResource("/de/hitec/nhplus/NewTreatmentView.fxml"));
+            FXMLLoader loader = new FXMLLoader(Main.class.getResource("/de/hitec/nhplus/treatment/NewTreatmentView.fxml"));
             AnchorPane pane = loader.load();
             Scene scene = new Scene(pane);
 
@@ -229,7 +229,7 @@ public class AllTreatmentController
     {
         try
         {
-            FXMLLoader loader = new FXMLLoader(Main.class.getResource("/de/hitec/nhplus/TreatmentView.fxml"));
+            FXMLLoader loader = new FXMLLoader(Main.class.getResource("/de/hitec/nhplus/treatment/TreatmentView.fxml"));
             AnchorPane pane = loader.load();
             Scene scene = new Scene(pane);
 

src/main/java/de/hitec/nhplus/treatment/NewTreatmentController.java

@@ -111,7 +111,7 @@ public class NewTreatmentController
         LocalTime end = DateConverter.convertStringToLocalTime(textFieldEnd.getText());
         String description = textFieldDescription.getText();
         String remarks = textAreaRemarks.getText();
-        Treatment treatment = new Treatment(patient.getPid(), date, begin, end, description, remarks);
+        Treatment treatment = new Treatment(patient.getId(), date, begin, end, description, remarks);
         createTreatment(treatment);
         controller.readAllAndShowInTableView();
         stage.close();

src/main/java/de/hitec/nhplus/treatment/Treatment.java

@@ -6,28 +6,17 @@ import java.time.LocalDate;
 import java.time.LocalTime;
 
 public class Treatment {
-    private long tid;
+    private int id;
-    private final long pid;
+    private final int patientId;
     private LocalDate date;
     private LocalTime begin;
     private LocalTime end;
     private String description;
     private String remarks;
 
-    /**
+    public Treatment(int patientId, LocalDate date, LocalTime begin,
-     * Constructor to initiate an object of class <code>Treatment</code> with the given parameter. Use this constructor
-     * to initiate objects, which are not persisted yet, because it will not have a treatment id (tid).
-     *
-     * @param pid Id of the treated patient.
-     * @param date Date of the Treatment.
-     * @param begin Time of the start of the treatment in format "hh:MM"
-     * @param end Time of the end of the treatment in format "hh:MM".
-     * @param description Description of the treatment.
-     * @param remarks Remarks to the treatment.
-     */
-    public Treatment(long pid, LocalDate date, LocalTime begin,
                      LocalTime end, String description, String remarks) {
-        this.pid = pid;
+        this.patientId = patientId;
         this.date = date;
         this.begin = begin;
         this.end = end;
@@ -35,22 +24,10 @@ public class Treatment {
         this.remarks = remarks;
     }
 
-    /**
+    public Treatment(int id, int patientId, LocalDate date, LocalTime begin,
-     * Constructor to initiate an object of class <code>Treatment</code> with the given parameter. Use this constructor
-     * to initiate objects, which are already persisted and have a treatment id (tid).
-     *
-     * @param tid Id of the treatment.
-     * @param pid Id of the treated patient.
-     * @param date Date of the Treatment.
-     * @param begin Time of the start of the treatment in format "hh:MM"
-     * @param end Time of the end of the treatment in format "hh:MM".
-     * @param description Description of the treatment.
-     * @param remarks Remarks to the treatment.
-     */
-    public Treatment(long tid, long pid, LocalDate date, LocalTime begin,
                      LocalTime end, String description, String remarks) {
-        this.tid = tid;
+        this.id = id;
-        this.pid = pid;
+        this.patientId = patientId;
         this.date = date;
         this.begin = begin;
         this.end = end;
@@ -58,12 +35,12 @@ public class Treatment {
         this.remarks = remarks;
     }
 
-    public long getTid() {
+    public int getId() {
-        return tid;
+        return id;
     }
 
-    public long getPid() {
+    public int getPatientId() {
-        return this.pid;
+        return this.patientId;
     }
 
     public String getDate() {
@@ -107,8 +84,8 @@ public class Treatment {
     }
 
     public String toString() {
-        return "\nBehandlung" + "\nTID: " + this.tid +
+        return "\nBehandlung" + "\nID: " + this.id +
-                "\nPID: " + this.pid +
+                "\nPatient ID: " + this.patientId +
                 "\nDate: " + this.date +
                 "\nBegin: " + this.begin +
                 "\nEnd: " + this.end +

src/main/java/de/hitec/nhplus/treatment/TreatmentController.java

@@ -47,7 +47,7 @@ public class TreatmentController {
 
         PatientDao pDao = DaoFactory.getDaoFactory().createPatientDAO();
         try {
-            this.patient = pDao.read((int) treatment.getPid());
+            this.patient = pDao.read((int) treatment.getPatientId());
             this.treatment = treatment;
             showData();
         } catch (SQLException exception) {

src/main/java/de/hitec/nhplus/treatment/TreatmentDao.java

@@ -3,41 +3,27 @@ package de.hitec.nhplus.treatment;
 import de.hitec.nhplus.datastorage.DaoImp;
 import de.hitec.nhplus.utils.DateConverter;
 
-import java.sql.*;
+import java.sql.Connection;
-import java.time.LocalDate;
+import java.sql.PreparedStatement;
-import java.time.LocalTime;
+import java.sql.ResultSet;
+import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
 
-/**
- * Implements the Interface <code>DaoImp</code>. Overrides methods to generate specific <code>PreparedStatements</code>,
- * to execute the specific SQL Statements.
- */
 public class TreatmentDao extends DaoImp<Treatment> {
 
-    /**
-     * The constructor initiates an object of <code>TreatmentDao</code> and passes the connection to its super class.
-     *
-     * @param connection Object of <code>Connection</code> to execute the SQL-statements.
-     */
     public TreatmentDao(Connection connection) {
         super(connection);
     }
 
-    /**
-     * Generates a <code>PreparedStatement</code> to persist the given object of <code>Treatment</code>.
-     *
-     * @param treatment Object of <code>Treatment</code> to persist.
-     * @return <code>PreparedStatement</code> to insert the given patient.
-     */
     @Override
     protected PreparedStatement getCreateStatement(Treatment treatment) {
         PreparedStatement preparedStatement = null;
         try {
-            final String SQL = "INSERT INTO treatment (pid, treatment_date, begin, end, description, remark) " +
+            final String SQL = "INSERT INTO treatment (patientId, treatment_date, begin, end, description, remark) " +
                     "VALUES (?, ?, ?, ?, ?, ?)";
             preparedStatement = this.connection.prepareStatement(SQL);
-            preparedStatement.setLong(1, treatment.getPid());
+            preparedStatement.setLong(1, treatment.getPatientId());
             preparedStatement.setString(2, treatment.getDate());
             preparedStatement.setString(3, treatment.getBegin());
             preparedStatement.setString(4, treatment.getEnd());
@@ -49,45 +35,32 @@ public class TreatmentDao extends DaoImp<Treatment> {
         return preparedStatement;
     }
 
-    /**
-     * Generates a <code>PreparedStatement</code> to query a treatment by a given treatment id (tid).
-     *
-     * @param tid Treatment id to query.
-     * @return <code>PreparedStatement</code> to query the treatment.
-     */
     @Override
-    protected PreparedStatement getReadByIDStatement(long tid) {
+    protected PreparedStatement getReadByIDStatement(int id) {
         PreparedStatement preparedStatement = null;
         try {
-            final String SQL = "SELECT * FROM treatment WHERE tid = ?";
+            final String SQL = "SELECT * FROM treatment WHERE id = ?";
             preparedStatement = this.connection.prepareStatement(SQL);
-            preparedStatement.setLong(1, tid);
+            preparedStatement.setInt(1, id);
         } catch (SQLException exception) {
             exception.printStackTrace();
         }
         return preparedStatement;
     }
 
-    /**
-     * Maps a <code>ResultSet</code> of one treatment to an object of <code>Treatment</code>.
-     *
-     * @param result ResultSet with a single row. Columns will be mapped to an object of class <code>Treatment</code>.
-     * @return Object of class <code>Treatment</code> with the data from the resultSet.
-     */
     @Override
     protected Treatment getInstanceFromResultSet(ResultSet result) throws SQLException {
-        LocalDate date = DateConverter.convertStringToLocalDate(result.getString(3));
+        return new Treatment(
-        LocalTime begin = DateConverter.convertStringToLocalTime(result.getString(4));
+                result.getInt(1),
-        LocalTime end = DateConverter.convertStringToLocalTime(result.getString(5));
+                result.getInt(2),
-        return new Treatment(result.getLong(1), result.getLong(2),
+                DateConverter.convertStringToLocalDate(result.getString(3)),
-                date, begin, end, result.getString(6), result.getString(7));
+                DateConverter.convertStringToLocalTime(result.getString(4)),
+                DateConverter.convertStringToLocalTime(result.getString(5)),
+                result.getString(6),
+                result.getString(7)
+        );
     }
 
-    /**
-     * Generates a <code>PreparedStatement</code> to query all treatments.
-     *
-     * @return <code>PreparedStatement</code> to query all treatments.
-     */
     @Override
     protected PreparedStatement getReadAllStatement() {
         PreparedStatement statement = null;
@@ -100,73 +73,48 @@ public class TreatmentDao extends DaoImp<Treatment> {
         return statement;
     }
 
-    /**
-     * Maps a <code>ResultSet</code> of all treatments to an <code>ArrayList</code> with objects of class
-     * <code>Treatment</code>.
-     *
-     * @param result ResultSet with all rows. The columns will be mapped to objects of class <code>Treatment</code>.
-     * @return <code>ArrayList</code> with objects of class <code>Treatment</code> of all rows in the
-     * <code>ResultSet</code>.
-     */
     @Override
     protected ArrayList<Treatment> getListFromResultSet(ResultSet result) throws SQLException {
-        ArrayList<Treatment> list = new ArrayList<Treatment>();
+        ArrayList<Treatment> list = new ArrayList<>();
         while (result.next()) {
-            LocalDate date = DateConverter.convertStringToLocalDate(result.getString(3));
+            Treatment treatment = new Treatment(
-            LocalTime begin = DateConverter.convertStringToLocalTime(result.getString(4));
+                    result.getInt(1),
-            LocalTime end = DateConverter.convertStringToLocalTime(result.getString(5));
+                    result.getInt(2),
-            Treatment treatment = new Treatment(result.getLong(1), result.getLong(2),
+                    DateConverter.convertStringToLocalDate(result.getString(3)),
-                    date, begin, end, result.getString(6), result.getString(7));
+                    DateConverter.convertStringToLocalTime(result.getString(4)),
+                    DateConverter.convertStringToLocalTime(result.getString(5)),
+                    result.getString(6),
+                    result.getString(7)
+            );
             list.add(treatment);
         }
         return list;
     }
 
-    /**
+    private PreparedStatement getReadAllTreatmentsOfOnePatientByPid(int patientId) {
-     * Generates a <code>PreparedStatement</code> to query all treatments of a patient with a given patient id (pid).
-     *
-     * @param pid Patient id to query all treatments referencing this id.
-     * @return <code>PreparedStatement</code> to query all treatments of the given patient id (pid).
-     */
-    private PreparedStatement getReadAllTreatmentsOfOnePatientByPid(long pid) {
         PreparedStatement preparedStatement = null;
         try {
-            final String SQL = "SELECT * FROM treatment WHERE pid = ?";
+            final String SQL = "SELECT * FROM treatment WHERE patientId = ?";
             preparedStatement = this.connection.prepareStatement(SQL);
-            preparedStatement.setLong(1, pid);
+            preparedStatement.setInt(1, patientId);
         } catch (SQLException exception) {
             exception.printStackTrace();
         }
         return preparedStatement;
     }
 
-    /**
+    public List<Treatment> readTreatmentsByPid(int patientId) throws SQLException {
-     * Queries all treatments of a given patient id (pid) and maps the results to an <code>ArrayList</code> with
+        ResultSet result = getReadAllTreatmentsOfOnePatientByPid(patientId).executeQuery();
-     * objects of class <code>Treatment</code>.
-     *
-     * @param pid Patient id to query all treatments referencing this id.
-     * @return <code>ArrayList</code> with objects of class <code>Treatment</code> of all rows in the
-     * <code>ResultSet</code>.
-     */
-    public List<Treatment> readTreatmentsByPid(long pid) throws SQLException {
-        ResultSet result = getReadAllTreatmentsOfOnePatientByPid(pid).executeQuery();
         return getListFromResultSet(result);
     }
 
-    /**
-     * Generates a <code>PreparedStatement</code> to update the given treatment, identified
-     * by the id of the treatment (tid).
-     *
-     * @param treatment Treatment object to update.
-     * @return <code>PreparedStatement</code> to update the given treatment.
-     */
     @Override
     protected PreparedStatement getUpdateStatement(Treatment treatment) {
         PreparedStatement preparedStatement = null;
         try {
             final String SQL =
                     "UPDATE treatment SET " +
-                            "pid = ?, " +
+                            "patientId = ?, " +
                             "treatment_date = ?, " +
                             "begin = ?, " +
                             "end = ?, " +
@@ -174,33 +122,27 @@ public class TreatmentDao extends DaoImp<Treatment> {
                             "remark = ? " +
                             "WHERE tid = ?";
             preparedStatement = this.connection.prepareStatement(SQL);
-            preparedStatement.setLong(1, treatment.getPid());
+            preparedStatement.setInt(1, treatment.getPatientId());
             preparedStatement.setString(2, treatment.getDate());
             preparedStatement.setString(3, treatment.getBegin());
             preparedStatement.setString(4, treatment.getEnd());
             preparedStatement.setString(5, treatment.getDescription());
             preparedStatement.setString(6, treatment.getRemarks());
-            preparedStatement.setLong(7, treatment.getTid());
+            preparedStatement.setLong(7, treatment.getId());
         } catch (SQLException exception) {
             exception.printStackTrace();
         }
         return preparedStatement;
     }
 
-    /**
-     * Generates a <code>PreparedStatement</code> to delete a treatment with the given id.
-     *
-     * @param tid Id of the Treatment to delete.
-     * @return <code>PreparedStatement</code> to delete treatment with the given id.
-     */
     @Override
-    protected PreparedStatement getDeleteStatement(long tid) {
+    protected PreparedStatement getDeleteStatement(int id) {
         PreparedStatement preparedStatement = null;
         try {
             final String SQL =
                     "DELETE FROM treatment WHERE tid = ?";
             preparedStatement = this.connection.prepareStatement(SQL);
-            preparedStatement.setLong(1, tid);
+            preparedStatement.setInt(1, id);
         } catch (SQLException exception) {
             exception.printStackTrace();
         }

src/main/resources/de/hitec/nhplus/treatment/AllTreatmentView.fxml

@@ -18,7 +18,7 @@
       <TableView fx:id="tableView" editable="true" layoutX="31.0" layoutY="35.0" onMouseClicked="#handleMouseClick" prefHeight="364.0" prefWidth="825.0" AnchorPane.bottomAnchor="75.0" AnchorPane.leftAnchor="15.0" AnchorPane.rightAnchor="15.0" AnchorPane.topAnchor="80.0">
         <columns>
             <TableColumn fx:id="columnId" maxWidth="-1.0" minWidth="40.0" prefWidth="50.0" text="ID" />
-            <TableColumn fx:id="columnPid" maxWidth="-1.0" minWidth="100.0" prefWidth="120.0" text="PatientID" />
+            <TableColumn fx:id="columnPatientId" maxWidth="-1.0" minWidth="100.0" prefWidth="120.0" text="PatientID" />
           <TableColumn fx:id="columnDate" maxWidth="-1.0" minWidth="140.0" prefWidth="150.0" text="Datum" />
           <TableColumn fx:id="columnBegin" maxWidth="-1.0" minWidth="140.0" prefWidth="150.0" text="Beginn" />
             <TableColumn fx:id="columnEnd" maxWidth="-1.0" minWidth="140.0" prefWidth="150.0" text="Ende" />