#10: Add Base for Delete Date Functionality

Reviewed-on: #35
Reviewed-by: SZUT-Ole <ole.kueck@hmmh.de>

.gitea/workflows/javadoc.yml

@@ -15,9 +15,7 @@ jobs:
       - name: "Checkout"
         uses: "https://git.euph.dev/actions/checkout@v3"
       - name: "javadoc"
-        run: |
-          mvn package
-          mvn javadoc:javadoc -f pom.xml
+        run: mvn package javadoc:javadoc -f pom.xml
       - name: "Deploy Javadoc"
         env:
           SSH_AUTH_SOCK: /tmp/ssh_agent.sock

.gitea/workflows/quality.yml

@@ -5,13 +5,23 @@ on:
   - pull_request
 
 jobs:
-  qs:
-    name: "Qualty Check"
+  linting:
+    name: "Linting Check"
     runs-on: "ubuntu-latest"
     container:
       image: "git.euph.dev/actions/runner-java-21:latest"
     steps:
       - name: "Checkout"
         uses: "https://git.euph.dev/actions/checkout@v3"
-      - name: "CHECK"
+      - name: "Checkstyle Linting"
         run: mvn checkstyle:check -e
+  javadoc:
+    name: "Javadoc Check"
+    runs-on: "ubuntu-latest"
+    container:
+      image: "git.euph.dev/actions/runner-java-21:latest"
+    steps:
+      - name: "Checkout"
+        uses: "https://git.euph.dev/actions/checkout@v3"
+      - name: "Generate Javadoc"
+        run: mvn package javadoc:javadoc -f pom.xml

.idea/sqlDataSources.xml

@@ -25,6 +25,8 @@
               <option value="file://$PROJECT_DIR$/src/main/resources/de/hitec/nhplus/patient/database/Patient.sql" />
               <option value="file://$PROJECT_DIR$/src/main/resources/de/hitec/nhplus/treatment/database/Treatment.sql" />
               <option value="file://$PROJECT_DIR$/src/main/resources/de/hitec/nhplus/nurse/database/Nurse.sql" />
+              <option value="file://$PROJECT_DIR$/src/main/resources/de/hitec/nhplus/medication/database/Medication.sql" />
+              <option value="file://$PROJECT_DIR$/src/main/resources/de/hitec/nhplus/medication/database/Medication_Ingredient.sql" />
             </array>
           </option>
           <option name="outLayout" value="File per object by schema.groovy" />

.idea/sqldialects.xml

@@ -3,7 +3,6 @@
   <component name="SqlDialectMappings">
     <file url="file://$PROJECT_DIR$/src/main/java/de/hitec/nhplus/patient/database/PatientDao.java" dialect="GenericSQL" />
     <file url="file://$PROJECT_DIR$/src/main/java/de/hitec/nhplus/treatment/database/TreatmentDao.java" dialect="GenericSQL" />
-    <file url="file://$PROJECT_DIR$/src/main/java/de/hitec/nhplus/treatment/database/NurseDao.java" dialect="GenericSQL" />
     <file url="PROJECT" dialect="SQLite" />
   </component>
 </project>

.mvn/wrapper/maven-wrapper.properties

@@ -1,2 +0,0 @@
-distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.5/apache-maven-3.8.5-bin.zip
-wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar

pom.xml

@@ -21,12 +21,12 @@
         <dependency>
             <groupId>org.openjfx</groupId>
             <artifactId>javafx-controls</artifactId>
-            <version>20.0.1</version>
+            <version>21.0.2</version>
         </dependency>
         <dependency>
             <groupId>org.openjfx</groupId>
             <artifactId>javafx-fxml</artifactId>
-            <version>20.0.1</version>
+            <version>21.0.2</version>
         </dependency>
         <dependency>
             <groupId>org.controlsfx</groupId>
@@ -112,11 +112,20 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>3.6.0</version>
+                <version>3.6.3</version>
                 <configuration>
+                    <source>21</source>
+                    <release>21</release>
+                    <author>true</author>
+                    <doclint>all,-missing</doclint>
                     <reportOutputDirectory>${project.basedir}</reportOutputDirectory>
                     <sourcepath>src/main/java</sourcepath>
                     <destDir>javadoc_build</destDir>
+                    <tags>
+                        <tag>
+                            <name>implSpec</name>
+                        </tag>
+                    </tags>
                 </configuration>
             </plugin>
         </plugins>

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

@@ -1,7 +1,6 @@
 package de.hitec.nhplus;
 
 import de.hitec.nhplus.datastorage.ConnectionBuilder;
-
 import javafx.application.Application;
 import javafx.application.Platform;
 import javafx.fxml.FXMLLoader;
@@ -12,18 +11,35 @@ import javafx.stage.Stage;
 import java.io.IOException;
 
 /**
- * @author dominik.saeume@hmmh.ag
+ * The application main class, holding the {@link #main} entrypoint.
+ *
+ * @author Bernd Heidemann
+ * @author Dominik Säume
  */
 public class Main extends Application {
 
     private Stage primaryStage;
+
+    /**
+     * The main entry point.
+     */
+    public static void main(String[] args) {
+        launch(args);
+    }
+
+    /**
+     * Implementation of the JavaFX start hook.
+     */
     @Override
     public void start(Stage primaryStage) {
         this.primaryStage = primaryStage;
-        mainWindow();
+        executeMainApplication();
     }
 
-    public void mainWindow() {
+    /**
+     * Executes the main application.
+     */
+    private void executeMainApplication() {
         try {
             FXMLLoader loader = new FXMLLoader(Main.class.getResource("/de/hitec/nhplus/main/MainWindowView.fxml"));
             TabPane pane = loader.load();
@@ -44,7 +60,4 @@ public class Main extends Application {
         }
     }
 
-    public static void main(String[] args) {
-        launch(args);
-    }
 }

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

@@ -7,9 +7,10 @@ import java.sql.DriverManager;
 import java.sql.SQLException;
 
 /**
- * The {@link DaoFactory} allows a safe connection to the Database.
+ * The {@link DaoFactory} allows a safe connection to the database.
  *
- * @author Bernd Heidemann
+ * @author Bernd Heidemannn
+ * @author Dominik Säume
  * @version 1.0
  */
 public class ConnectionBuilder {
@@ -20,8 +21,7 @@ public class ConnectionBuilder {
     private static Connection connection;
 
     /**
-     * @return a Thread-safe {@link Connection} to the Database.
-     * @author Bernd Heidemann
+     * @return A thread-safe {@link Connection} to the database.
      */
     synchronized public static Connection getConnection() {
         try {
@@ -38,9 +38,7 @@ public class ConnectionBuilder {
     }
 
     /**
-     * Closes the Connection to the Database.
-     *
-     * @author Bernd Heidemann
+     * Closes the connection to the database.
      */
     synchronized public static void closeConnection() {
         try {

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

@@ -4,51 +4,48 @@ import java.sql.SQLException;
 import java.util.List;
 
 /**
- * {@link Dao} is the Abbreviation of Data-Access-Object.
- * This Interface has the Basic Methods which are needed on any DAO to work as expected.
+ * {@link Dao} is the abbreviation for Data-Access-Object.
+ * This interface has the Basic Methods that are needed on any {@link Dao} to work as expected.
  *
- * @param <T> The Model for which that DAO is implemented
- * @author Bernd Heidemann
+ * @param <T> The model for which that {@link Dao} is implemented.
+ * @author Bernd Heidemannn
+ * @author Dominik Säume
  * @version 1.0
- * @implSpec The Implementations should be added to the {@link DaoFactory}
+ * @implSpec The implementations should be added to the {@link DaoFactory}.
  */
 public interface Dao<T> {
+
     /**
-     * Create a Database Entry from a Model object.
+     * Create a database entry from a model object.
      *
-     * @param t the Model instance
-     * @author Bernd Heidemann
+     * @param t The model instance.
      */
     void create(T t) throws SQLException;
 
     /**
-     * Read a Database Entry to a Model object.
+     * Read a database entry to a model object.
      *
-     * @param id of the Element in the Database
-     * @author Bernd Heidemann
+     * @param id The ID of the element in the database.
+     * @return a model instance of {@link T}.
      */
     T read(int id) throws SQLException;
 
     /**
-     * Read all Database Entries to a {@link List} of Model objects.
-     *
-     * @author Bernd Heidemann
+     * @return All database entries as a {@link List} of model instances.
      */
     List<T> readAll() throws SQLException;
 
     /**
-     * Update the Database according to the Values of the Model object.
+     * Update the database according to the values of the model object.
      *
-     * @param t the Model instance.
-     * @author Bernd Heidemann
+     * @param t The model instance.
      */
     void update(T t) throws SQLException;
 
     /**
-     * Delete a Database Entry.
+     * Delete a database entry.
      *
-     * @param id of the Element in the Database.
-     * @author Bernd Heidemann
+     * @param id The ID of the element in the database.
      */
     void delete(int id) throws SQLException;
 }

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

@@ -1,13 +1,15 @@
 package de.hitec.nhplus.datastorage;
 
+import de.hitec.nhplus.medication.database.MedicationDao;
 import de.hitec.nhplus.nurse.database.NurseDao;
 import de.hitec.nhplus.patient.database.PatientDao;
 import de.hitec.nhplus.treatment.database.TreatmentDao;
 
 /**
- * The {@link DaoFactory} is a Singleton({@link DaoFactory#getInstance}) which should be used to get {@link Dao}s.
+ * The {@link DaoFactory} is a singleton({@link #getInstance}) that should be used to get {@link Dao}s.
  *
- * @author Bernd Heidemann
+ * @author Bernd Heidemannn
+ * @author Dominik Säume
  * @version 1.0
  */
 public class DaoFactory {
@@ -15,16 +17,13 @@ public class DaoFactory {
     private static DaoFactory instance;
 
     /**
-     * A Private Constructor according to the Singleton Pattern.
-     *
-     * @author Bernd Heidemann
+     * A private constructor according to the singleton pattern.
      */
     private DaoFactory() {
     }
 
     /**
-     * @return {@link DaoFactory}, the Singleton Instance
-     * @author Bernd Heidemann
+     * @return The singleton instance of {@link DaoFactory}.
      */
     public static DaoFactory getInstance() {
         if (DaoFactory.instance == null) {
@@ -34,26 +33,34 @@ public class DaoFactory {
     }
 
     /**
-     * @return a {@link TreatmentDao}
-     * @author Bernd Heidemann
+     * @return A new {@link TreatmentDao} instance with a database connection.
+     * @see de.hitec.nhplus.treatment.Treatment Treatment
      */
     public TreatmentDao createTreatmentDao() {
         return new TreatmentDao(ConnectionBuilder.getConnection());
     }
 
     /**
-     * @return a {@link PatientDao}
-     * @author Bernd Heidemann
+     * @return A new {@link PatientDao} instance with a database connection.
+     * @see de.hitec.nhplus.patient.Patient Patient
      */
     public PatientDao createPatientDAO() {
         return new PatientDao(ConnectionBuilder.getConnection());
     }
 
     /**
-     * @return a {@link NurseDao}
-     * @author Dominik Säume
+     * @return A new {@link NurseDao} instance with a database connection.
+     * @see de.hitec.nhplus.nurse.Nurse Nurse
      */
     public NurseDao createNurseDAO() {
         return new NurseDao(ConnectionBuilder.getConnection());
     }
+
+    /**
+     * @return A new {@link MedicationDao} instance with a database connection.
+     * @see de.hitec.nhplus.medication.Medication Medication
+     */
+    public MedicationDao createMedicationDAO() {
+        return new MedicationDao(ConnectionBuilder.getConnection());
+    }
 }

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

@@ -7,30 +7,30 @@ import java.sql.SQLException;
 import java.util.List;
 
 /**
- * The {@link DaoImp} is a Generic Base Implementation of the {@link Dao},
- * which should fit most use cases.
+ * The {@link DaoImp} is a generic base implementation of the {@link Dao},
+ * that should fit most use cases.
  *
- * @param <T> The Model for which that DAO is implemented
- * @author Bernd Heidemann
+ * @param <T> The model for which that {@link Dao} is implemented.
+ * @author Bernd Heidemannn
+ * @author Dominik Säume
  * @version 1.0
- * @implSpec The Implementations should be added to the {@link DaoFactory}
+ * @implSpec The implementations should be added to the {@link DaoFactory}.
  */
 public abstract class DaoImp<T> implements Dao<T> {
     protected final Connection connection;
 
     /**
-     * @param connection a Database Connection, which should be gotten from {@link ConnectionBuilder}
-     * @author Bernd Heidemann
+     * @param connection The database {@link Connection} to use.
+     * @implSpec The {@link Connection} should be received from the {@link ConnectionBuilder}.
      */
     public DaoImp(Connection connection) {
         this.connection = connection;
     }
 
     /**
-     * Creates a new Database Entry from a Model object.
+     * Creates a new database entry from a model object.
      *
-     * @param t the Model instance
-     * @author Bernd Heidemann
+     * @param t The model instance.
      */
     @Override
     public void create(T t) throws SQLException {
@@ -38,10 +38,10 @@ public abstract class DaoImp<T> implements Dao<T> {
     }
 
     /**
-     * Read a Database Entry to a Model object.
+     * Read a database entry to a model object.
      *
-     * @param id of the Element in the Database
-     * @author Bernd Heidemann
+     * @param id The ID of the element in the database.
+     * @return the model instance of type {@link T}, which was read.
      */
     @Override
     public T read(int id) throws SQLException {
@@ -54,9 +54,9 @@ public abstract class DaoImp<T> implements Dao<T> {
     }
 
     /**
-     * Read all Database Entries to a {@link List} of Model objects.
+     * Read all database entries to a {@link List} of model objects.
      *
-     * @author Bernd Heidemann
+     * @return a {@link List} of type {@link T} holding all database entries as model instances.
      */
     @Override
     public List<T> readAll() throws SQLException {
@@ -64,10 +64,9 @@ public abstract class DaoImp<T> implements Dao<T> {
     }
 
     /**
-     * Update the Database according to the Values of the Model object.
+     * Update the database according to the values of the model object.
      *
-     * @param t the Model instance.
-     * @author Bernd Heidemann
+     * @param t The model instance.
      */
     @Override
     public void update(T t) throws SQLException {
@@ -75,27 +74,62 @@ public abstract class DaoImp<T> implements Dao<T> {
     }
 
     /**
-     * Delete a Database Entry.
+     * Delete a database entry.
      *
-     * @param id of the Element in the Database.
-     * @author Bernd Heidemann
+     * @param id The ID of the element in the database.
      */
     @Override
     public void delete(int id) throws SQLException {
         getDeleteStatement(id).executeUpdate();
     }
 
+    /**
+     * @param result The {@link ResultSet} from execution of the statement received from {@link #getReadByIDStatement}.
+     * @return The model instance of type {@link T}.
+     * @implSpec This will be called in {@link #read}.
+     */
     protected abstract T getInstanceFromResultSet(ResultSet result) throws SQLException;
 
-    protected abstract List<T> getListFromResultSet(ResultSet result) throws SQLException;
-
-    protected abstract PreparedStatement getCreateStatement(T t) throws SQLException;
-
+    /**
+     * @param id The ID of the database entry to read.
+     * @return A {@link PreparedStatement} to read a specific entry by its ID.
+     * @implSpec This will be called in {@link #read}.
+     * The output of the execution will be used in {@link #getInstanceFromResultSet}.
+     */
     protected abstract PreparedStatement getReadByIDStatement(int id) throws SQLException;
 
+    /**
+     * @param result The {@link ResultSet} from execution of the statement received from {@link #getReadAllStatement}.
+     * @return A {@link List} of type {@link T} holding all database entries as model instances.
+     * @implSpec This will be called in {@link #readAll}.
+     */
+    protected abstract List<T> getListFromResultSet(ResultSet result) throws SQLException;
+
+    /**
+     * @return A {@link PreparedStatement} to read all entries of this model.
+     * @implSpec This will be called in {@link #readAll}.
+     * The output of the execution will be used in {@link #getListFromResultSet}.
+     */
     protected abstract PreparedStatement getReadAllStatement() throws SQLException;
 
+    /**
+     * @param t The model instance of type {@link T} for which an entry should be created.
+     * @return a {@link PreparedStatement} which can be used to create a new database entry for the model instance.
+     * @implSpec This will be called in {@link #create}.
+     */
+    protected abstract PreparedStatement getCreateStatement(T t) throws SQLException;
+
+    /**
+     * @param t The model instance of type {@link T} for which the entry should be updated.
+     * @return a {@link PreparedStatement} which can be used to update the database entry for the model instance.
+     * @implSpec This will be called in {@link #update}.
+     */
     protected abstract PreparedStatement getUpdateStatement(T t) throws SQLException;
 
+    /**
+     * @param id The ID of the database entry which should be deleted.
+     * @return a {@link PreparedStatement} which can be used to delete the database entry.
+     * @implSpec This will be called in {@link #delete}.
+     */
     protected abstract PreparedStatement getDeleteStatement(int id) throws SQLException;
 }

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

@@ -1,12 +1,44 @@
 package de.hitec.nhplus.fixtures;
 
+import de.hitec.nhplus.datastorage.ConnectionBuilder;
+
 import java.sql.Connection;
 import java.sql.SQLException;
 import java.util.Map;
 
-public interface Fixture<T>
-{
+/**
+ * A fixture is a class, which can be used to set up a specific set of data.
+ *
+ * @param <T> The model for which the {@link Fixture} is implemented.
+ * @author Dominik Säume
+ * @version 1.0
+ * @implSpec The implementations should be added to the {@link Fixtures#main}.
+ */
+public interface Fixture<T> {
+
+    /**
+     * Drop all dependent tables.
+     *
+     * @param connection A database {@link Connection}, which should be received from
+     *                   the {@link ConnectionBuilder#getConnection}
+     * @implSpec Use {@code IF EXISTS}, to ensure that it doesn't throw an {@link Exception}.
+     */
     void dropTable(Connection connection) throws SQLException;
+
+    /**
+     * Set up the empty tables with the schema.
+     *
+     * @param connection A database {@link Connection}, which should be received from
+     *                   the {@link ConnectionBuilder#getConnection}
+     */
     void setupTable(Connection connection) throws SQLException;
+
+    /**
+     * Loads all model specific data to the database.
+     *
+     * @return A map of models with a {@link String} key, to be used by other {@link Fixture}
+     * @implSpec The {@link de.hitec.nhplus.datastorage.Dao Dao} should be received
+     * from {@link de.hitec.nhplus.datastorage.DaoFactory DaoFactory}.
+     */
     Map<String, T> load() throws SQLException;
 }

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

@@ -1,33 +1,50 @@
 package de.hitec.nhplus.fixtures;
 
 import de.hitec.nhplus.datastorage.ConnectionBuilder;
+import de.hitec.nhplus.nurse.Nurse;
 import de.hitec.nhplus.patient.Patient;
 
 import java.sql.Connection;
 import java.util.Map;
 
-public class Fixtures
-{
-    public static void main(String[] args)
-    {
+/**
+ * A class, implementing an entrypoint({@link #main}), for loading a specific set of data.
+ *
+ * @author Dominik Säume
+ * @version 1.0
+ */
+public class Fixtures {
+
+    /**
+     * An entrypoint, for loading a specific set of data.
+     *
+     * @param args unused.
+     */
+    public static void main(String[] args) {
         Connection connection = ConnectionBuilder.getConnection();
 
-        try
-        {
+        try {
             PatientFixture patientFixture = new PatientFixture();
             patientFixture.dropTable(connection);
             patientFixture.setupTable(connection);
             Map<String, Patient> patientsByName = patientFixture.load();
 
-            TreatmentFixture treatmentFixture = new TreatmentFixture(patientsByName);
+            NurseFixture nurseFixture = new NurseFixture();
+            nurseFixture.dropTable(connection);
+            nurseFixture.setupTable(connection);
+            Map<String, Nurse> nursesByName = nurseFixture.load();
+
+
+            TreatmentFixture treatmentFixture = new TreatmentFixture(patientsByName, nursesByName);
             treatmentFixture.dropTable(connection);
             treatmentFixture.setupTable(connection);
             treatmentFixture.load();
 
-            NurseFixture nurseFixture = new NurseFixture();
-            nurseFixture.dropTable(connection);
-            nurseFixture.setupTable(connection);
-            nurseFixture.load();
+
+            MedicationFixture medicationFixture = new MedicationFixture();
+            medicationFixture.dropTable(connection);
+            medicationFixture.setupTable(connection);
+            medicationFixture.load();
 
         } catch (Exception exception) {
             System.out.println(exception.getMessage());

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

@@ -0,0 +1,161 @@
+package de.hitec.nhplus.fixtures;
+
+import de.hitec.nhplus.Main;
+import de.hitec.nhplus.datastorage.DaoFactory;
+import de.hitec.nhplus.medication.Ingredient;
+import de.hitec.nhplus.medication.Medication;
+import de.hitec.nhplus.medication.database.MedicationDao;
+
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.util.*;
+
+/**
+ * {@link Fixture} for {@link Medication}.
+ *
+ * @author Dominik Säume
+ */
+public class MedicationFixture implements Fixture<Medication> {
+    private static final String SCHEMA = "/de/hitec/nhplus/medication/database/Medication.sql";
+    private static final String INGREDIENT_SCHEMA = "/de/hitec/nhplus/medication/database/Medication_Ingredient.sql";
+
+    @Override
+    public void dropTable(Connection connection) throws SQLException {
+        connection.createStatement().execute("DROP TABLE IF EXISTS medication");
+        connection.createStatement().execute("DROP TABLE IF EXISTS  medication_ingredient");
+    }
+
+    @Override
+    public void setupTable(Connection connection) throws SQLException {
+
+        final InputStream schema = Main.class.getResourceAsStream(SCHEMA);
+        final InputStream ingredientSchema = Main.class.getResourceAsStream(INGREDIENT_SCHEMA);
+        assert schema != null;
+        assert ingredientSchema != null;
+        String SQL = new Scanner(schema, StandardCharsets.UTF_8)
+                .useDelimiter("\\A")
+                .next();
+        String ingredientSQL = ";" + new Scanner(ingredientSchema, StandardCharsets.UTF_8)
+                .useDelimiter("\\A")
+                .next();
+        connection.createStatement().execute(SQL);
+        connection.createStatement().execute(ingredientSQL);
+
+    }
+
+    @Override
+    public Map<String, Medication> load() throws SQLException {
+        List<Medication> medications = new ArrayList<>();
+
+        Ingredient metforminhydrochlorid = new Ingredient("Metforminhydrochlorid");
+        Ingredient cellulose = new Ingredient("Cellulose");
+        Ingredient povidon = new Ingredient("Povidon");
+        Ingredient magnesiumstearat = new Ingredient("Magnesiumstearat");
+        Ingredient lisinoprilDihydrat = new Ingredient("Lisinopril-Dihydrat");
+        Ingredient mannitol = new Ingredient("Mannitol");
+        Ingredient calciumphosphat = new Ingredient("Calciumphosphat");
+        Ingredient simvastatin = new Ingredient("Simvastatin");
+        Ingredient laktose = new Ingredient("Laktose");
+        Ingredient enoxaparinNatrium = new Ingredient("Enoxaparin-Natrium");
+        Ingredient benzylalkohol = new Ingredient("Benzylalkohol");
+        Ingredient wasser = new Ingredient("Wasser");
+        Ingredient levothyroxinnatrium = new Ingredient("Levothyroxinnatrium");
+        Ingredient staerke = new Ingredient("Stärke");
+        Ingredient akaziengummi = new Ingredient("Akaziengummi");
+        Ingredient warfarinnatrium = new Ingredient("Warfarinnatrium");
+
+        medications.add(new Medication(
+                1,
+                "Metformin",
+                "AstraZeneca",
+                List.of(
+                        metforminhydrochlorid,
+                        cellulose,
+                        povidon,
+                        magnesiumstearat
+                ),
+                "Übelkeit, Durchfall, Laktatazidose (selten)",
+                "Oral",
+                100
+        ));
+        medications.add(new Medication(
+                2,
+                "Lisinopril",
+                "Teva Pharmaceuticals",
+                List.of(
+                        lisinoprilDihydrat,
+                        mannitol,
+                        calciumphosphat,
+                        magnesiumstearat
+                ),
+                "Schwindel, trockener Husten",
+                "Oral",
+                150
+        ));
+        medications.add(new Medication(
+                3,
+                "Simvastatin",
+                "Mylan",
+                List.of(
+                        simvastatin,
+                        laktose,
+                        cellulose,
+                        magnesiumstearat
+                ),
+                "Muskelschmerzen, Leberprobleme(selten)",
+                "Oral",
+                80
+        ));
+        medications.add(new Medication(
+                4,
+                "Enoxaparin",
+                "Sanofi",
+                List.of(
+                        enoxaparinNatrium,
+                        benzylalkohol,
+                        wasser
+                ),
+                "Blutungen, Reaktionen an der Injektionsstelle",
+                "Unterhautinjektion",
+                120
+        ));
+        medications.add(new Medication(
+                5,
+                "Levothyroxin",
+                "Sandoz",
+                List.of(
+                        levothyroxinnatrium,
+                        laktose,
+                        staerke,
+                        akaziengummi
+                ),
+                "Herzrasen, Gewichtsverlust",
+                "Oral",
+                90
+        ));
+        medications.add(new Medication(
+                6,
+                "Warfarin",
+                "Apotex Inc.",
+                List.of(
+                        warfarinnatrium,
+                        laktose,
+                        staerke,
+                        magnesiumstearat
+                ),
+                "Blutungen, Blutergüsse",
+                "Oral",
+                110
+        ));
+        MedicationDao dao = DaoFactory.getInstance().createMedicationDAO();
+        Map<String, Medication> medicationsByName = new HashMap<>();
+        for (Medication medication : medications) {
+            dao.create(medication);
+            medicationsByName.put(medication.getName(), medication);
+        }
+        return medicationsByName;
+
+    }
+}

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

@@ -4,6 +4,7 @@ import de.hitec.nhplus.Main;
 import de.hitec.nhplus.datastorage.DaoFactory;
 import de.hitec.nhplus.nurse.Nurse;
 import de.hitec.nhplus.nurse.database.NurseDao;
+import de.hitec.nhplus.treatment.Treatment;
 
 import java.io.InputStream;
 import java.nio.charset.StandardCharsets;
@@ -11,10 +12,15 @@ import java.sql.Connection;
 import java.sql.SQLException;
 import java.util.*;
 
+/**
+ * {@link Fixture} for {@link Nurse}.
+ *
+ * @author Dominik Säume
+ */
 public class NurseFixture implements Fixture<Nurse> {
     @Override
     public void dropTable(Connection connection) throws SQLException {
-        connection.createStatement().execute("DROP TABLE nurse");
+        connection.createStatement().execute("DROP TABLE IF EXISTS nurse");
     }
 
     @Override

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

@@ -13,10 +13,15 @@ import java.util.*;
 
 import static de.hitec.nhplus.utils.DateConverter.convertStringToLocalDate;
 
+/**
+ * {@link Fixture} for {@link Patient}.
+ *
+ * @author Dominik Säume
+ */
 public class PatientFixture implements Fixture<Patient> {
     @Override
     public void dropTable(Connection connection) throws SQLException {
-        connection.createStatement().execute("DROP TABLE patient");
+        connection.createStatement().execute("DROP TABLE IF EXISTS patient");
     }
 
     @Override

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

@@ -2,6 +2,7 @@ package de.hitec.nhplus.fixtures;
 
 import de.hitec.nhplus.Main;
 import de.hitec.nhplus.datastorage.DaoFactory;
+import de.hitec.nhplus.nurse.Nurse;
 import de.hitec.nhplus.patient.Patient;
 import de.hitec.nhplus.treatment.Treatment;
 import de.hitec.nhplus.treatment.database.TreatmentDao;
@@ -15,16 +16,24 @@ import java.util.*;
 import static de.hitec.nhplus.utils.DateConverter.convertStringToLocalDate;
 import static de.hitec.nhplus.utils.DateConverter.convertStringToLocalTime;
 
+
+/**
+ * {@link Fixture} for {@link Treatment}.
+ *
+ * @author Dominik Säume
+ */
 public class TreatmentFixture implements Fixture<Treatment> {
     private final Map<String, Patient> patientsByName;
+    private final Map<String, Nurse> nursesByName;
 
-    public TreatmentFixture(Map<String, Patient> patientsByName) {
+    public TreatmentFixture(Map<String, Patient> patientsByName, Map<String, Nurse> nursesByName) {
         this.patientsByName = patientsByName;
+        this.nursesByName = nursesByName;
     }
 
     @Override
     public void dropTable(Connection connection) throws SQLException {
-        connection.createStatement().execute("DROP TABLE treatment");
+        connection.createStatement().execute("DROP TABLE IF EXISTS treatment");
     }
 
     @Override
@@ -45,9 +54,13 @@ public class TreatmentFixture implements Fixture<Treatment> {
         Patient ahmet = patientsByName.get("Ahmet");
         Patient elisabeth = patientsByName.get("Elisabeth");
 
+        Nurse ole = nursesByName.get("Ole");
+        Nurse armin = nursesByName.get("Armin");
+
         treatments.add(new Treatment(
                 1,
                 seppl,
+                ole,
                 convertStringToLocalDate("2023-06-03"),
                 convertStringToLocalTime("11:00"),
                 convertStringToLocalTime("15:00"),
@@ -59,6 +72,7 @@ public class TreatmentFixture implements Fixture<Treatment> {
         treatments.add(new Treatment(
                 2,
                 seppl,
+                armin,
                 convertStringToLocalDate("2023-06-05"),
                 convertStringToLocalTime("11:00"),
                 convertStringToLocalTime("12:30"),
@@ -70,6 +84,7 @@ public class TreatmentFixture implements Fixture<Treatment> {
         treatments.add(new Treatment(
                 3,
                 martina,
+                ole,
                 convertStringToLocalDate("2023-06-04"),
                 convertStringToLocalTime("07:30"),
                 convertStringToLocalTime("08:00"),
@@ -79,6 +94,7 @@ public class TreatmentFixture implements Fixture<Treatment> {
         treatments.add(new Treatment(
                 4,
                 seppl,
+                armin,
                 convertStringToLocalDate("2023-06-06"),
                 convertStringToLocalTime("15:10"),
                 convertStringToLocalTime("16:00"),
@@ -88,6 +104,7 @@ public class TreatmentFixture implements Fixture<Treatment> {
         treatments.add(new Treatment(
                 8,
                 seppl,
+                ole,
                 convertStringToLocalDate("2023-06-08"),
                 convertStringToLocalTime("15:00"),
                 convertStringToLocalTime("16:00"),
@@ -97,6 +114,7 @@ public class TreatmentFixture implements Fixture<Treatment> {
         treatments.add(new Treatment(
                 9,
                 martina,
+                armin,
                 convertStringToLocalDate("2023-06-07"),
                 convertStringToLocalTime("11:00"),
                 convertStringToLocalTime("11:30"),
@@ -106,6 +124,7 @@ public class TreatmentFixture implements Fixture<Treatment> {
         treatments.add(new Treatment(
                 12,
                 hans,
+                armin,
                 convertStringToLocalDate("2023-06-08"),
                 convertStringToLocalTime("15:00"),
                 convertStringToLocalTime("15:30"),
@@ -115,6 +134,7 @@ public class TreatmentFixture implements Fixture<Treatment> {
         treatments.add(new Treatment(
                 14,
                 ahmet,
+                ole,
                 convertStringToLocalDate("2023-08-24"),
                 convertStringToLocalTime("09:30"),
                 convertStringToLocalTime("10:15"),
@@ -123,6 +143,7 @@ public class TreatmentFixture implements Fixture<Treatment> {
         treatments.add(new Treatment(
                 16,
                 elisabeth,
+                armin,
                 convertStringToLocalDate("2023-08-31"),
                 convertStringToLocalTime("13:30"),
                 convertStringToLocalTime("13:45"),
@@ -132,6 +153,7 @@ public class TreatmentFixture implements Fixture<Treatment> {
         treatments.add(new Treatment(
                 17,
                 elisabeth,
+                ole,
                 convertStringToLocalDate("2023-09-01"),
                 convertStringToLocalTime("16:00"),
                 convertStringToLocalTime("17:00"),

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

@@ -12,6 +12,12 @@ import javafx.scene.layout.BorderPane;
 import java.io.IOException;
 import java.util.Objects;
 
+/**
+ * Controller for the main window of the application, which holds all tabs.
+ *
+ * @author Bernd Heidemann
+ * @author Dominik Säume
+ */
 public class MainWindowController {
     @FXML
     private TabPane mainTabPane;
@@ -35,6 +41,10 @@ public class MainWindowController {
     private AnchorPane lockedNursePage;
     @FXML
     private Tab lockedNurseTab;
+    @FXML
+    private AnchorPane medicationPage;
+    @FXML
+    private Tab medicationTab;
 
     @FXML
     public void initialize() {
@@ -44,6 +54,7 @@ public class MainWindowController {
         patientTab.setOnSelectionChanged(event -> loadPatientPage());
         treatmentTab.setOnSelectionChanged(event -> loadTreatmentsPage());
         nurseTab.setOnSelectionChanged(event -> loadNursePage());
+        medicationTab.setOnSelectionChanged(event -> loadMedicationPage());
 
 
         nurseTabPane.getSelectionModel().select(activeNurseTab);
@@ -52,6 +63,9 @@ public class MainWindowController {
         lockedNurseTab.setOnSelectionChanged(event -> loadLockedNursePage());
     }
 
+    /**
+     * Loads the patient page into its tab.
+     */
     private void loadPatientPage() {
         try {
             BorderPane patientsPane = FXMLLoader.load(
@@ -67,6 +81,9 @@ public class MainWindowController {
         }
     }
 
+    /**
+     * Loads the treatment page into its tab.
+     */
     private void loadTreatmentsPage() {
         try {
             BorderPane treatmentsPane = FXMLLoader.load(
@@ -82,6 +99,9 @@ public class MainWindowController {
         }
     }
 
+    /**
+     * Loads the nurse page into its tab.
+     */
     private void loadNursePage() {
         SelectionModel<Tab> selectionModel = nurseTabPane.getSelectionModel();
         Tab selectedTab = selectionModel.getSelectedItem();
@@ -122,4 +142,22 @@ public class MainWindowController {
             exception.printStackTrace();
         }
     }
+
+    /**
+     * Loads the medication page into its tab.
+     */
+    private void loadMedicationPage() {
+        try {
+            BorderPane medicationPane = FXMLLoader.load(
+                    Objects.requireNonNull(Main.class.getResource("/de/hitec/nhplus/medication/AllMedicationView.fxml"))
+            );
+            medicationPage.getChildren().setAll(medicationPane);
+            AnchorPane.setTopAnchor(medicationPane, 0d);
+            AnchorPane.setBottomAnchor(medicationPane, 0d);
+            AnchorPane.setLeftAnchor(medicationPane, 0d);
+            AnchorPane.setRightAnchor(medicationPane, 0d);
+        } catch (IOException exception) {
+            exception.printStackTrace();
+        }
+    }
 }

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

@@ -2,6 +2,12 @@ package de.hitec.nhplus.main;
 
 import javafx.beans.property.SimpleStringProperty;
 
+/**
+ * A simple base model for a {@link Person} that can be extended.
+ *
+ * @author Bernd Heidemann
+ * @author Dominik Säume
+ */
 public abstract class Person {
     private final SimpleStringProperty firstName;
     private final SimpleStringProperty surName;

src/main/java/de/hitec/nhplus/medication/AllMedicationController.java

@@ -0,0 +1,79 @@
+package de.hitec.nhplus.medication;
+
+import de.hitec.nhplus.datastorage.DaoFactory;
+import de.hitec.nhplus.medication.database.MedicationDao;
+import javafx.beans.property.SimpleStringProperty;
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import javafx.fxml.FXML;
+import javafx.scene.control.TableColumn;
+import javafx.scene.control.TableView;
+import javafx.scene.control.cell.PropertyValueFactory;
+
+import java.sql.SQLException;
+import java.util.stream.Collectors;
+
+/**
+ * The controller for viewing all {@link Medication}s.
+ *
+ * @author Dominik Säume
+ */
+public class AllMedicationController {
+    @FXML
+    private TableView<Medication> tableView;
+    @FXML
+    private TableColumn<Medication, Integer> columnId;
+    @FXML
+    private TableColumn<Medication, String> columnName;
+    @FXML
+    private TableColumn<Medication, String> columnManufacturer;
+    @FXML
+    private TableColumn<Medication, String> columnIngredient;
+    @FXML
+    private TableColumn<Medication, String> columnPossibleSideEffects;
+    @FXML
+    private TableColumn<Medication, String> columnAdministrationMethod;
+    @FXML
+    private TableColumn<Medication, Integer> columnCurrentStock;
+
+    private final ObservableList<Medication> medications = FXCollections.observableArrayList();
+    private MedicationDao dao;
+
+    /**
+     * Initialization method that is called after the binding of all the fields.
+     */
+    @FXML
+    public void initialize() {
+        readAllAndShowInTableView();
+
+        this.columnId.setCellValueFactory(new PropertyValueFactory<>("id"));
+        this.columnName.setCellValueFactory(new PropertyValueFactory<>("name"));
+        this.columnManufacturer.setCellValueFactory(new PropertyValueFactory<>("manufacturer"));
+        this.columnIngredient.setCellValueFactory(
+                cellData -> new SimpleStringProperty(
+                        cellData
+                                .getValue()
+                                .getIngredients()
+                                .stream()
+                                .map(ingredient -> ingredient.getName())
+                                .collect(Collectors.joining("\n"))
+                ));
+        this.columnPossibleSideEffects.setCellValueFactory(new PropertyValueFactory<>("possibleSideEffects"));
+        this.columnAdministrationMethod.setCellValueFactory(new PropertyValueFactory<>("administrationMethod"));
+        this.columnCurrentStock.setCellValueFactory(new PropertyValueFactory<>("currentStock"));
+
+        this.tableView.setItems(this.medications);
+    }
+
+    /**
+     * Internal method to read all data and set it to the table view.
+     */
+    public void readAllAndShowInTableView() {
+        this.dao = DaoFactory.getInstance().createMedicationDAO();
+        try {
+            this.medications.setAll(dao.readAll());
+        } catch (SQLException exception) {
+            exception.printStackTrace();
+        }
+    }
+}

src/main/java/de/hitec/nhplus/medication/Ingredient.java

@@ -0,0 +1,32 @@
+package de.hitec.nhplus.medication;
+
+import javafx.beans.property.SimpleStringProperty;
+
+/**
+ * The simple model for an {@link Ingredient}.
+ *
+ * @author Dominik Säume
+ * @implSpec This isn't a conventional model, because it isn't directly stored in the database,
+ * but it can be changed to do that, in the case that its complexity rises in the future.
+ */
+public class Ingredient {
+    private final SimpleStringProperty name;
+
+    public Ingredient(String name) {
+        this.name = new SimpleStringProperty(name);
+    }
+
+    public String getName() {
+        return name.get();
+    }
+
+    public SimpleStringProperty nameProperty() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name.set(name);
+    }
+
+
+}

src/main/java/de/hitec/nhplus/medication/Medication.java

@@ -0,0 +1,167 @@
+package de.hitec.nhplus.medication;
+
+import javafx.beans.property.SimpleIntegerProperty;
+import javafx.beans.property.SimpleListProperty;
+import javafx.beans.property.SimpleStringProperty;
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+
+import java.util.List;
+import java.util.StringJoiner;
+import java.util.stream.Collectors;
+
+/**
+ * The model for a {@link Medication}.
+ *
+ * @author Dominik Säume
+ */
+public class Medication {
+    private SimpleIntegerProperty id;
+    private final SimpleStringProperty name;
+    private final SimpleStringProperty manufacturer;
+    private final SimpleListProperty<Ingredient> ingredients;
+    private final SimpleStringProperty possibleSideEffects;
+    private final SimpleStringProperty administrationMethod;
+    private final SimpleIntegerProperty currentStock;
+
+    /**
+     * This constructor allows instantiating a {@link Medication} object,
+     * before it is stored in the database, by omitting the {@link Medication#id ID} value.
+     *
+     * @implSpec Instances created with this constructor can be directly passed to
+     * {@link de.hitec.nhplus.medication.database.MedicationDao#create MedicationDao.create}.
+     */
+    public Medication(
+            String name,
+            String manufacturer,
+            List<Ingredient> ingredients,
+            String possibleSideEffects,
+            String administrationMethod,
+            int currentStock
+    ) {
+        this.name = new SimpleStringProperty(name);
+        this.manufacturer = new SimpleStringProperty(manufacturer);
+        this.ingredients = new SimpleListProperty<>(FXCollections.observableArrayList(ingredients));
+        this.possibleSideEffects = new SimpleStringProperty(possibleSideEffects);
+        this.administrationMethod = new SimpleStringProperty(administrationMethod);
+        this.currentStock = new SimpleIntegerProperty(currentStock);
+    }
+
+    /**
+     * This constructor allows instantiating a {@link Medication} object with all existing fields.
+     */
+    public Medication(
+            int id,
+            String name,
+            String manufacturer,
+            List<Ingredient> ingredients,
+            String possibleSideEffects,
+            String administrationMethod,
+            int currentStock
+    ) {
+        this.id = new SimpleIntegerProperty(id);
+        this.name = new SimpleStringProperty(name);
+        this.manufacturer = new SimpleStringProperty(manufacturer);
+        this.ingredients = new SimpleListProperty<>(FXCollections.observableArrayList(ingredients));
+        this.possibleSideEffects = new SimpleStringProperty(possibleSideEffects);
+        this.administrationMethod = new SimpleStringProperty(administrationMethod);
+        this.currentStock = new SimpleIntegerProperty(currentStock);
+    }
+
+    public int getId() {
+        return id.get();
+    }
+
+    public SimpleIntegerProperty idProperty() {
+        return id;
+    }
+
+    public String getName() {
+        return name.get();
+    }
+
+    public SimpleStringProperty nameProperty() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name.set(name);
+    }
+
+    public String getManufacturer() {
+        return manufacturer.get();
+    }
+
+    public SimpleStringProperty manufacturerProperty() {
+        return manufacturer;
+    }
+
+    public void setManufacturer(String manufacturer) {
+        this.manufacturer.set(manufacturer);
+    }
+
+    public ObservableList<Ingredient> getIngredients() {
+        return ingredients.get();
+    }
+
+    public SimpleListProperty<Ingredient> ingredientsProperty() {
+        return ingredients;
+    }
+
+    public void setIngredients(List<Ingredient> ingredients) {
+        this.ingredients.set(FXCollections.observableArrayList(ingredients));
+    }
+
+    public String getPossibleSideEffects() {
+        return possibleSideEffects.get();
+    }
+
+    public SimpleStringProperty possibleSideEffectsProperty() {
+        return possibleSideEffects;
+    }
+
+    public void setPossibleSideEffects(String possibleSideEffects) {
+        this.possibleSideEffects.set(possibleSideEffects);
+    }
+
+    public String getAdministrationMethod() {
+        return administrationMethod.get();
+    }
+
+    public SimpleStringProperty administrationMethodProperty() {
+        return administrationMethod;
+    }
+
+    public void setAdministrationMethod(String administrationMethod) {
+        this.administrationMethod.set(administrationMethod);
+    }
+
+    public int getCurrentStock() {
+        return currentStock.get();
+    }
+
+    public SimpleIntegerProperty currentStockProperty() {
+        return currentStock;
+    }
+
+    public void setCurrentStock(int currentStock) {
+        this.currentStock.set(currentStock);
+    }
+
+    @Override
+    public String toString() {
+        return new StringJoiner(System.lineSeparator())
+                .add("MEDICATION")
+                .add("ID: " + this.getId())
+                .add("Name: " + this.getName())
+                .add("Manufacturer: " + this.getManufacturer())
+                .add("Ingredients: " + this.getIngredients()
+                        .stream()
+                        .map(Ingredient::getName)
+                        .collect(Collectors.joining(", ", "[", "]")))
+                .add("Possible Side Effects: " + this.getPossibleSideEffects())
+                .add("Administration Method: " + this.getAdministrationMethod())
+                .add("Current Stock: " + this.getCurrentStock())
+                .toString();
+    }
+}

src/main/java/de/hitec/nhplus/medication/database/MedicationDao.java

@@ -0,0 +1,189 @@
+package de.hitec.nhplus.medication.database;
+
+import de.hitec.nhplus.datastorage.Dao;
+import de.hitec.nhplus.medication.Ingredient;
+import de.hitec.nhplus.medication.Medication;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * The {@link MedicationDao} is an implementation of the{@link de.hitec.nhplus.datastorage.Dao Dao}
+ * for the {@link Medication} model.
+ *
+ * @author Bernd Heidemannn
+ * @author Dominik Säume
+ */
+public class MedicationDao implements Dao<Medication> {
+    protected final Connection connection;
+
+    public MedicationDao(Connection connection) {
+        this.connection = connection;
+    }
+
+    @Override
+    public void create(Medication medication) throws SQLException {
+        final String medicationSQL = """
+                    INSERT INTO medication
+                    (name, manufacturer, possibleSideEffects, administrationMethod, currentStock)
+                    VALUES (?, ?, ?, ?, ?);
+                """;
+        PreparedStatement medicationStatement = this.connection.prepareStatement(medicationSQL);
+        medicationStatement.setString(1, medication.getName());
+        medicationStatement.setString(2, medication.getManufacturer());
+        medicationStatement.setString(3, medication.getPossibleSideEffects());
+        medicationStatement.setString(4, medication.getAdministrationMethod());
+        medicationStatement.setInt(5, medication.getCurrentStock());
+        medicationStatement.execute();
+
+        final String ingredientSQL = """
+                    INSERT INTO medication_ingredient
+                    (id, name)
+                    VALUES (?, ?);
+                """;
+        for (Ingredient ingredient : medication.getIngredients()) {
+            PreparedStatement ingredientStatement = this.connection.prepareStatement(ingredientSQL);
+            ingredientStatement.setInt(1, medication.getId());
+            ingredientStatement.setString(2, ingredient.getName());
+            ingredientStatement.execute();
+        }
+    }
+
+    @Override
+    public Medication read(int id) throws SQLException {
+        final String SQL = """
+                        SELECT medication.*, medication_ingredient.id
+                        FROM medication
+                        LEFT JOIN medication_ingredient ON medication.id = medication_ingredient.id
+                        WHERE medication.id = ?
+                """;
+        PreparedStatement statement = this.connection.prepareStatement(SQL);
+        statement.setInt(1, id);
+        ResultSet result = statement.executeQuery();
+        return getInstanceFromResultSet(result);
+    }
+
+    @Override
+    public List<Medication> readAll() throws SQLException {
+        final String SQL = """
+                    SELECT medication.*, medication_ingredient.name
+                    FROM medication LEFT JOIN
+                    medication_ingredient ON medication.id = medication_ingredient.id
+                """;
+        ResultSet result = connection.prepareStatement(SQL).executeQuery();
+
+        List<Medication> medications = new ArrayList<>();
+        Map<Integer, List<Ingredient>> ingredientMap = new HashMap<>();
+
+        int currentMedicationId;
+        int lastMedicationId = -1;
+        while (result.next()) {
+            currentMedicationId = result.getInt(1);
+            if (currentMedicationId != lastMedicationId) {
+                Medication medication = new Medication(
+                        result.getInt(1),
+                        result.getString(2),
+                        result.getString(3),
+                        List.of(),
+                        result.getString(4),
+                        result.getString(5),
+                        result.getInt(6)
+                );
+                medications.add(medication);
+                lastMedicationId = currentMedicationId;
+                continue;
+            }
+            List<Ingredient> ingredients = ingredientMap.computeIfAbsent(currentMedicationId, k -> new ArrayList<>());
+            ingredients.add(new Ingredient(result.getString(7)));
+            lastMedicationId = currentMedicationId;
+        }
+        for (Medication medication : medications) {
+            medication.setIngredients(ingredientMap.get(medication.getId()));
+        }
+
+        return medications;
+    }
+
+    @Override
+    public void update(Medication medication) throws SQLException {
+        final String SQL = """
+                    UPDATE medication SET
+                    name = ?,
+                    manufacturer = ?,
+                    possibleSideEffects = ?,
+                    administrationMethod = ?,
+                    currentStock = ?
+                    WHERE id = ?
+                """;
+        PreparedStatement preparedStatement = this.connection.prepareStatement(SQL);
+        preparedStatement.setString(1, medication.getName());
+        preparedStatement.setString(2, medication.getManufacturer());
+        preparedStatement.setString(3, medication.getPossibleSideEffects());
+        preparedStatement.setString(4, medication.getAdministrationMethod());
+        preparedStatement.setInt(5, medication.getCurrentStock());
+        preparedStatement.setInt(6, medication.getId());
+        preparedStatement.executeUpdate();
+
+        final String ingredientDeleteSQL = """
+                    DELETE FROM medication_ingredient WHERE id = ?
+                """;
+        PreparedStatement ingredientStatement = this.connection.prepareStatement(ingredientDeleteSQL);
+        ingredientStatement.setInt(1, medication.getId());
+        ingredientStatement.executeUpdate();
+
+        final String ingredientCreateSQL = """
+                    INSERT INTO medication_ingredient
+                    (id, name)
+                    VALUES (?, ?);
+                """;
+        for (Ingredient ingredient : medication.getIngredients()) {
+            PreparedStatement statement = this.connection.prepareStatement(ingredientCreateSQL);
+            statement.setInt(1, medication.getId());
+            statement.setString(2, ingredient.getName());
+            statement.execute();
+        }
+    }
+
+    @Override
+    public void delete(int id) throws SQLException {
+        final String SQL = """
+                    DELETE FROM medication WHERE medication.id = ?;
+                """;
+        PreparedStatement preparedStatement = this.connection.prepareStatement(SQL);
+        preparedStatement.setInt(1, id);
+        preparedStatement.executeUpdate();
+    }
+
+    /**
+     * Constructs a {@link Medication} object from the {@link ResultSet} obtained after executing a database query.
+     * This method is used internally to map the {@link ResultSet} data to a {@link Medication} object.
+     *
+     * @param result The {@link ResultSet} containing the data retrieved from the database.
+     * @return A {@link Medication} object constructed from the {@link ResultSet} data.
+     */
+    private Medication getInstanceFromResultSet(ResultSet result) throws SQLException {
+        Medication medication = new Medication(
+                result.getInt(1),
+                result.getString(2),
+                result.getString(3),
+                List.of(),
+                result.getString(4),
+                result.getString(5),
+                result.getInt(6)
+        );
+
+        List<Ingredient> ingredients = new ArrayList<>();
+        while (result.next()) {
+            ingredients.add(new Ingredient(result.getString(2)));
+
+        }
+        medication.setIngredients(ingredients);
+        return medication;
+    }
+}

src/main/java/de/hitec/nhplus/nurse/AllNurseController.java

@@ -17,6 +17,12 @@ import javafx.scene.control.cell.TextFieldTableCell;
 
 import java.sql.SQLException;
 
+/**
+ * The controller for viewing all {@link Nurse}s.
+ *
+ * @author Dominik Säume
+ * @author Ole Kück
+ */
 public class AllNurseController {
     @FXML
     public TextField textFieldSurName;
@@ -42,6 +48,10 @@ public class AllNurseController {
     private final ObservableList<Nurse> nurses = FXCollections.observableArrayList();
     private NurseDao dao;
 
+    /**
+     * Initialization method that is called after the binding of all the fields.
+     */
+    @FXML
     public void initialize() {
         this.readAllAndShowInTableView();
 
@@ -74,15 +84,28 @@ public class AllNurseController {
         this.textFieldPhoneNumber.textProperty().addListener(inputNewNurseValidationListener);
     }
 
+    /**
+     * Internal method to read all data and set it to the table view.
+     */
     private void readAllAndShowInTableView(){
         this.nurses.clear();
         this.dao = DaoFactory.getInstance().createNurseDAO();
         try {
-            this.nurses.addAll(this.dao.readAllActive());
+            this.nurses.setAll(this.dao.readAllActive());
         }catch (SQLException exception){
             exception.printStackTrace();
         }
     }
+
+    /**
+     * Internal method that clears the text fields used for creating a new {@link Nurse}.
+     */
+    private void clearTextfields() {
+        this.textFieldFirstName.clear();
+        this.textFieldSurName.clear();
+        this.textFieldPhoneNumber.clear();
+    }
+
     @FXML
     public void handleAdd(){
         String surname=this.textFieldSurName.getText();
@@ -97,6 +120,7 @@ public class AllNurseController {
         readAllAndShowInTableView();
         clearTextfields();
     }
+
     @FXML
     public void handleLock(){
         Nurse selectedItem = this.tableView.getSelectionModel().getSelectedItem();
@@ -113,11 +137,4 @@ public class AllNurseController {
         readAllAndShowInTableView();
     }
 
-    private void clearTextfields() {
-        this.textFieldFirstName.clear();
-        this.textFieldSurName.clear();
-        this.textFieldPhoneNumber.clear();
-    }
-
-
 }

src/main/java/de/hitec/nhplus/nurse/Nurse.java

@@ -7,11 +7,23 @@ import javafx.beans.property.SimpleStringProperty;
 
 import java.util.StringJoiner;
 
+/**
+ * The model for a {@link Nurse}.
+ *
+ * @author Dominik Säume
+ */
 public class Nurse extends Person {
     private SimpleIntegerProperty id;
     private final SimpleStringProperty phoneNumber;
     private final SimpleBooleanProperty locked;
 
+    /**
+     * This constructor allows instantiating a {@link Nurse} object,
+     * before it is stored in the database, by omitting the {@link Nurse#id ID} value.
+     *
+     * @implSpec Instances created with this constructor can be directly passed to
+     * {@link de.hitec.nhplus.nurse.database.NurseDao#create  NurseDao.create}.
+     */
     public Nurse(
             String firstName,
             String surName,
@@ -32,6 +44,9 @@ public class Nurse extends Person {
         this.locked = new SimpleBooleanProperty(isLocked);
     }
 
+    /**
+     * This constructor allows instantiating a {@link Nurse} object with all existing fields.
+     */
     public Nurse(
             int id,
             String firstName,
@@ -44,6 +59,7 @@ public class Nurse extends Person {
         this.phoneNumber = new SimpleStringProperty(phoneNumber);
         this.locked = new SimpleBooleanProperty(isLocked);
     }
+
     public String calculateDeleteDate() {
         //TODO: Lese alle Behandlungen die Dieser  Pfleger Durchgefürt hat & brechene mit ihnen das Datum
         return "Comming soon";

src/main/java/de/hitec/nhplus/nurse/database/NurseDao.java

@@ -10,6 +10,12 @@ import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ * The {@link NurseDao} is an implementation of the {@link de.hitec.nhplus.datastorage.Dao Dao}
+ * for the {@link Nurse} model.
+ *
+ * @author Dominik Säume
+ */
 public class NurseDao extends DaoImp<Nurse> {
     public NurseDao(Connection connection) {
         super(connection);

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

@@ -19,6 +19,13 @@ import java.time.LocalDate;
 
 import static de.hitec.nhplus.utils.Validator.*;
 
+/**
+ * The controller for viewing all {@link Patient}s.
+ *
+ * @author Bernd Heidemann
+ * @author Dominik Säume
+ * @author Armin Ribic
+ */
 public class AllPatientController {
 
     @FXML
@@ -53,6 +60,10 @@ public class AllPatientController {
     private final ObservableList<Patient> patients = FXCollections.observableArrayList();
     private PatientDao dao;
 
+    /**
+     * Initialization method that is called after the binding of all the fields.
+     */
+    @FXML
     public void initialize() {
         this.readAllAndShowInTableView();
 
@@ -104,6 +115,41 @@ public class AllPatientController {
         this.textFieldRoomNumber.textProperty().addListener(inputNewPatientValidationListener);
     }
 
+    /**
+     * Internal method to read all data and set it to the table view.
+     */
+    private void readAllAndShowInTableView() {
+        this.patients.clear();
+        this.dao = DaoFactory.getInstance().createPatientDAO();
+        try {
+            this.patients.setAll(this.dao.readAll());
+        } catch (SQLException exception) {
+            exception.printStackTrace();
+        }
+    }
+
+    /**
+     * Internal method that stores the changes in the database.
+     */
+    private void doUpdate(TableColumn.CellEditEvent<Patient, String> event) {
+        try {
+            this.dao.update(event.getRowValue());
+        } catch (SQLException exception) {
+            exception.printStackTrace();
+        }
+    }
+
+    /**
+     * Internal method that clears the text fields used for creating a new {@link Patient}.
+     */
+    private void clearTextfields() {
+        this.textFieldFirstName.clear();
+        this.textFieldSurName.clear();
+        this.textFieldDateOfBirth.clear();
+        this.textFieldCareLevel.clear();
+        this.textFieldRoomNumber.clear();
+    }
+
     @FXML
     public void handleOnEditFirstname(TableColumn.CellEditEvent<Patient, String> event) {
         String newFirstName = event.getNewValue();
@@ -164,25 +210,6 @@ public class AllPatientController {
         this.doUpdate(event);
     }
 
-
-    private void doUpdate(TableColumn.CellEditEvent<Patient, String> event) {
-        try {
-            this.dao.update(event.getRowValue());
-        } catch (SQLException exception) {
-            exception.printStackTrace();
-        }
-    }
-
-    private void readAllAndShowInTableView() {
-        this.patients.clear();
-        this.dao = DaoFactory.getInstance().createPatientDAO();
-        try {
-            this.patients.addAll(this.dao.readAll());
-        } catch (SQLException exception) {
-            exception.printStackTrace();
-        }
-    }
-
     @FXML
     public void handleDelete() {
         Patient selectedItem = this.tableView.getSelectionModel().getSelectedItem();
@@ -212,12 +239,4 @@ public class AllPatientController {
         readAllAndShowInTableView();
         clearTextfields();
     }
-
-    private void clearTextfields() {
-        this.textFieldFirstName.clear();
-        this.textFieldSurName.clear();
-        this.textFieldDateOfBirth.clear();
-        this.textFieldCareLevel.clear();
-        this.textFieldRoomNumber.clear();
-    }
 }

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

@@ -11,6 +11,13 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.StringJoiner;
 
+/**
+ * The model for a {@link Patient}.
+ *
+ * @author Bernd Heidemann
+ * @author Dominik Säume
+ * @author Armin Ribic
+ */
 public class Patient extends Person {
     private SimpleIntegerProperty id;
     private final SimpleStringProperty dateOfBirth;
@@ -18,6 +25,13 @@ public class Patient extends Person {
     private final SimpleStringProperty roomNumber;
     private final List<Treatment> allTreatments = new ArrayList<>();
 
+    /**
+     * This constructor allows instantiating a {@link Patient} object,
+     * before it is stored in the database, by omitting the {@link Patient#id ID} value.
+     *
+     * @implSpec Instances created with this constructor can be directly passed to
+     * {@link de.hitec.nhplus.patient.database.PatientDao#create PatientDao.create}.
+     */
     public Patient(
             String firstName,
             String surName,
@@ -31,6 +45,9 @@ public class Patient extends Person {
         this.roomNumber = new SimpleStringProperty(roomNumber);
     }
 
+    /**
+     * This constructor allows instantiating a {@link Patient} object with all existing fields.
+     */
     public Patient(
             int id,
             String firstName,

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

@@ -11,6 +11,13 @@ import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ * The {@link PatientDao} is an implementation of the {@link de.hitec.nhplus.datastorage.Dao Dao}
+ * for the {@link Patient} model.
+ *
+ * @author Bernd Heidemannn
+ * @author Dominik Säume
+ */
 public class PatientDao extends DaoImp<Patient> {
 
     public PatientDao(Connection connection) {

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

@@ -2,6 +2,8 @@ package de.hitec.nhplus.treatment;
 
 import de.hitec.nhplus.Main;
 import de.hitec.nhplus.datastorage.DaoFactory;
+import de.hitec.nhplus.nurse.Nurse;
+import de.hitec.nhplus.nurse.database.NurseDao;
 import de.hitec.nhplus.patient.Patient;
 import de.hitec.nhplus.patient.database.PatientDao;
 import de.hitec.nhplus.treatment.database.TreatmentDao;
@@ -20,6 +22,12 @@ import java.io.IOException;
 import java.sql.SQLException;
 import java.util.ArrayList;
 
+/**
+ * The controller for viewing all {@link Treatment}s.
+ *
+ * @author Bernd Heidemann
+ * @author Dominik Säume
+ */
 public class AllTreatmentController {
 
     @FXML
@@ -31,6 +39,9 @@ public class AllTreatmentController {
     @FXML
     private TableColumn<Treatment, String> columnPatientName;
 
+    @FXML
+    private TableColumn<Treatment, String> columnNurseName;
+
     @FXML
     private TableColumn<Treatment, String> columnDate;
 
@@ -46,6 +57,9 @@ public class AllTreatmentController {
     @FXML
     private ComboBox<String> comboBoxPatientSelection;
 
+    @FXML
+    public ComboBox<String> comboBoxNurseSelection;
+
     @FXML
     private Button buttonDelete;
 
@@ -53,11 +67,19 @@ public class AllTreatmentController {
     private TreatmentDao dao;
     private final ObservableList<String> patientSelection = FXCollections.observableArrayList();
     private ArrayList<Patient> patientList;
+    private final ObservableList<String> nurseSelection = FXCollections.observableArrayList();
+    private ArrayList<Nurse> nurseList;
 
+    /**
+     * Initialization method that is called after the binding of all the fields.
+     */
+    @FXML
     public void initialize() {
         readAllAndShowInTableView();
         comboBoxPatientSelection.setItems(patientSelection);
-        comboBoxPatientSelection.getSelectionModel().select(0);
+        comboBoxPatientSelection.getSelectionModel().select("alle");
+
+        comboBoxNurseSelection.setItems(nurseSelection);
 
         this.columnId.setCellValueFactory(new PropertyValueFactory<>("id"));
         this.columnPatientName.setCellValueFactory(
@@ -66,6 +88,12 @@ public class AllTreatmentController {
                     return new SimpleStringProperty(patient.getSurName() + ", " + patient.getFirstName());
                 }
         );
+        this.columnNurseName.setCellValueFactory(
+                cellData -> {
+                    Nurse nurse = cellData.getValue().getNurse();
+                    return new SimpleStringProperty(nurse.getSurName() + ", " + nurse.getFirstName());
+                }
+        );
         this.columnDate.setCellValueFactory(new PropertyValueFactory<>("date"));
         this.columnBegin.setCellValueFactory(new PropertyValueFactory<>("begin"));
         this.columnEnd.setCellValueFactory(new PropertyValueFactory<>("end"));
@@ -83,8 +111,10 @@ public class AllTreatmentController {
         this.createComboBoxData();
     }
 
+    /**
+     * Internal method to read all data and set it to the table view.
+     */
     public void readAllAndShowInTableView() {
-        comboBoxPatientSelection.getSelectionModel().select(0);
         this.dao = DaoFactory.getInstance().createTreatmentDao();
         try {
             this.treatments.setAll(dao.readAll());
@@ -93,22 +123,83 @@ public class AllTreatmentController {
         }
     }
 
+    /**
+     * Internal method to create the data set for the combobox that is used for creating a new {@link Treatment}.
+     */
     private void createComboBoxData() {
-        PatientDao dao = DaoFactory.getInstance().createPatientDAO();
+        PatientDao patientDAO = DaoFactory.getInstance().createPatientDAO();
+        NurseDao nurseDao = DaoFactory.getInstance().createNurseDAO();
         try {
-            patientList = (ArrayList<Patient>) dao.readAll();
+            patientList = (ArrayList<Patient>) patientDAO.readAll();
             this.patientSelection.add("alle");
             for (Patient patient : patientList) {
                 this.patientSelection.add(patient.getSurName());
             }
+
+            nurseList = (ArrayList<Nurse>) nurseDao.readAll();
+            for (Nurse nurse : nurseList) {
+                this.nurseSelection.add(nurse.getSurName());
+            }
         } catch (SQLException exception) {
             exception.printStackTrace();
         }
     }
 
+    /**
+     * Internal method to get the {@link Patient} object by its surname.
+     *
+     * @see AllTreatmentController#handleComboBoxPatient
+     * @see AllTreatmentController#handleNewTreatment
+     */
+    private Patient searchInPatientList(String surname) {
+        for (Patient patient : this.patientList) {
+            if (patient.getSurName().equals(surname)) {
+                return patient;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Internal method to get the {@link Nurse} object by its surname.
+     *
+     * @see AllTreatmentController#handleNewTreatment
+     */
+    private Nurse searchInNurseList(String surname) {
+        for (Nurse nurse : this.nurseList) {
+            if (nurse.getSurName().equals(surname)) {
+                return nurse;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Method to save the changes to a {@link Treatment}.
+     */
+    protected void updateTreatment(Treatment treatment) {
+        TreatmentDao dao = DaoFactory.getInstance().createTreatmentDao();
+        try {
+            dao.update(treatment);
+        } catch (SQLException exception) {
+            exception.printStackTrace();
+        }
+    }
+
+    /**
+     * Method to create a new {@link Treatment}.
+     */
+    public void createTreatment(Treatment treatment) {
+        TreatmentDao dao = DaoFactory.getInstance().createTreatmentDao();
+        try {
+            dao.create(treatment);
+        } catch (SQLException exception) {
+            exception.printStackTrace();
+        }
+    }
 
     @FXML
-    public void handleComboBox() {
+    public void handleComboBoxPatient() {
         String selectedPatient = this.comboBoxPatientSelection.getSelectionModel().getSelectedItem();
         this.treatments.clear();
         this.dao = DaoFactory.getInstance().createTreatmentDao();
@@ -121,24 +212,51 @@ public class AllTreatmentController {
             }
         }
 
-        Patient patient = searchInList(selectedPatient);
+        Patient patient = searchInPatientList(selectedPatient);
         if (patient != null) {
             try {
-                this.treatments.setAll(this.dao.readTreatmentsByPid(patient.getId()));
+                this.treatments.setAll(this.dao.readTreatmentsByPatient(patient.getId()));
             } catch (SQLException exception) {
                 exception.printStackTrace();
             }
         }
     }
 
-    private Patient searchInList(String surname) {
-        for (Patient patient : this.patientList) {
-            if (patient.getSurName().equals(surname)) {
-                return patient;
+    /**
+     * Internal method to create a {@link TreatmentModalController TreatmentModal}.
+     *
+     * @param treatment The {@link Treatment} which should be edited. Set null to create a new one.
+     * @param title     The Title of the created modal.
+     * @param patient   The {@link Patient} whose {@link Treatment} this is.
+     * @param nurse     The {@link Nurse} who did the {@link Treatment}.
+     */
+    public void treatmentWindow(Treatment treatment, String title, Patient patient, Nurse nurse) {
+        try {
+            FXMLLoader loader = new FXMLLoader(
+                    Main.class.getResource("/de/hitec/nhplus/treatment/TreatmentModal.fxml")
+            );
+            BorderPane pane = loader.load();
+            Scene scene = new Scene(pane);
+            Stage stage = new Stage();
+
+            TreatmentModalController controller = loader.getController();
+            controller.initialize(
+                    this,
+                    stage,
+                    treatment,
+                    patient,
+                    nurse
+            );
+
+            stage.setScene(scene);
+            stage.setTitle(title);
+            stage.setResizable(true);
+            stage.setAlwaysOnTop(true);
+            stage.showAndWait();
+        } catch (IOException exception) {
+            exception.printStackTrace();
         }
     }
-        return null;
-    }
 
     @FXML
     public void handleDelete() {
@@ -154,17 +272,31 @@ public class AllTreatmentController {
 
     @FXML
     public void handleNewTreatment() {
-        try {
         String selectedPatient = this.comboBoxPatientSelection.getSelectionModel().getSelectedItem();
-            Patient patient = searchInList(selectedPatient);
-            newTreatmentWindow(patient);
-        } catch (NullPointerException exception) {
+        Patient patient = searchInPatientList(selectedPatient);
+
+        if(patient == null) {
             Alert alert = new Alert(Alert.AlertType.INFORMATION);
             alert.setTitle("Information");
             alert.setHeaderText("Patient für die Behandlung fehlt!");
             alert.setContentText("Wählen Sie über die Combobox einen Patienten aus!");
             alert.showAndWait();
+            return;
         }
+
+        String selectedNurse = this.comboBoxNurseSelection.getSelectionModel().getSelectedItem();
+        Nurse nurse = searchInNurseList(selectedNurse);
+
+        if(nurse == null) {
+            Alert alert = new Alert(Alert.AlertType.INFORMATION);
+            alert.setTitle("Information");
+            alert.setHeaderText("Pfleger für die Behandlung fehlt!");
+            alert.setContentText("Wählen Sie über die Combobox einen Pfleger aus!");
+            alert.showAndWait();
+            return;
+        }
+
+        treatmentWindow(null, "NHPlus - Neue Behandlung", patient, nurse);
     }
 
     @FXML
@@ -174,81 +306,14 @@ public class AllTreatmentController {
             if (event.getClickCount() == 2 && (tableView.getSelectionModel().getSelectedItem() != null)) {
                 int index = this.tableView.getSelectionModel().getSelectedIndex();
                 Treatment treatment = this.treatments.get(index);
-                treatmentWindow(treatment);
+                treatmentWindow(
+                        treatment,
+                        "NHPlus - Behandlung",
+                        treatment.getPatient(),
+                        treatment.getNurse()
+                );
             }
         });
-    }
 
-    public void newTreatmentWindow(Patient patient) {
-        try {
-            FXMLLoader loader = new FXMLLoader(
-                    Main.class.getResource("/de/hitec/nhplus/treatment/TreatmentModal.fxml")
-            );
-            BorderPane pane = loader.load();
-            Scene scene = new Scene(pane);
-            Stage stage = new Stage();
-
-            TreatmentModalController controller = loader.getController();
-            controller.initialize(
-                    this,
-                    stage,
-                    null,
-                    patient
-            );
-
-            stage.setScene(scene);
-            stage.setTitle("NHPlus - Neue Behandlung");
-            stage.setResizable(true);
-            stage.setAlwaysOnTop(true);
-            stage.showAndWait();
-        } catch (IOException exception) {
-            exception.printStackTrace();
-        }
-    }
-
-    public void treatmentWindow(Treatment treatment) {
-        try {
-            FXMLLoader loader = new FXMLLoader(
-                    Main.class.getResource("/de/hitec/nhplus/treatment/TreatmentModal.fxml")
-            );
-            BorderPane pane = loader.load();
-            Scene scene = new Scene(pane);
-            Stage stage = new Stage();
-
-            TreatmentModalController controller = loader.getController();
-            PatientDao pDao = DaoFactory.getInstance().createPatientDAO();
-            controller.initialize(
-                    this,
-                    stage,
-                    treatment,
-                    pDao.read(treatment.getPatient().getId())
-            );
-
-            stage.setScene(scene);
-            stage.setTitle("NHPlus - Behandlung");
-            stage.setResizable(true);
-            stage.setAlwaysOnTop(true);
-            stage.showAndWait();
-        } catch (IOException | SQLException exception) {
-            exception.printStackTrace();
-        }
-    }
-
-    public void createTreatment(Treatment treatment) {
-        TreatmentDao dao = DaoFactory.getInstance().createTreatmentDao();
-        try {
-            dao.create(treatment);
-        } catch (SQLException exception) {
-            exception.printStackTrace();
-        }
-    }
-
-    public void updateTreatment(Treatment treatment) {
-        TreatmentDao dao = DaoFactory.getInstance().createTreatmentDao();
-        try {
-            dao.update(treatment);
-        } catch (SQLException exception) {
-            exception.printStackTrace();
-        }
     }
 }

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

@@ -1,5 +1,6 @@
 package de.hitec.nhplus.treatment;
 
+import de.hitec.nhplus.nurse.Nurse;
 import de.hitec.nhplus.patient.Patient;
 import de.hitec.nhplus.utils.DateConverter;
 import javafx.beans.property.SimpleIntegerProperty;
@@ -10,18 +11,40 @@ import java.time.LocalDate;
 import java.time.LocalTime;
 import java.util.StringJoiner;
 
+/**
+ * The model for a {@link Treatment}.
+ *
+ * @author Bernd Heidemann
+ * @author Dominik Säume
+ */
 public class Treatment {
     private SimpleIntegerProperty id;
     private final SimpleObjectProperty<Patient> patient;
+    private final SimpleObjectProperty<Nurse> nurse;
     private final SimpleObjectProperty<LocalDate> date;
     private final SimpleObjectProperty<LocalTime> begin;
     private final SimpleObjectProperty<LocalTime> end;
     private final SimpleStringProperty description;
     private final SimpleStringProperty remarks;
 
-    public Treatment(Patient patient, LocalDate date, LocalTime begin,
-                     LocalTime end, String description, String remarks) {
+    /**
+     * This constructor allows instantiating a {@link Treatment} object,
+     * before it is stored in the database, by omitting the {@link Treatment#id ID} value.
+     *
+     * @implSpec Instances created with this constructor can be directly passed to
+     * {@link de.hitec.nhplus.treatment.database.TreatmentDao#create TreatmentDao.create}.
+     */
+    public Treatment(
+            Patient patient,
+            Nurse nurse,
+            LocalDate date,
+            LocalTime begin,
+            LocalTime end,
+            String description,
+            String remarks
+    ) {
         this.patient = new SimpleObjectProperty<>(patient);
+        this.nurse = new SimpleObjectProperty<>(nurse);
         this.date = new SimpleObjectProperty<>(date);
         this.begin = new SimpleObjectProperty<>(begin);
         this.end = new SimpleObjectProperty<>(end);
@@ -29,10 +52,22 @@ public class Treatment {
         this.remarks = new SimpleStringProperty(remarks);
     }
 
-    public Treatment(int id, Patient patient, LocalDate date, LocalTime begin,
-                     LocalTime end, String description, String remarks) {
+    /**
+     * This constructor allows instantiating a {@link Treatment} object with all existing fields.
+     */
+    public Treatment(
+            int id,
+            Patient patient,
+            Nurse nurse,
+            LocalDate date,
+            LocalTime begin,
+            LocalTime end,
+            String description,
+            String remarks
+    ) {
         this.id = new SimpleIntegerProperty(id);
         this.patient = new SimpleObjectProperty<>(patient);
+        this.nurse = new SimpleObjectProperty<>(nurse);
         this.date = new SimpleObjectProperty<>(date);
         this.begin = new SimpleObjectProperty<>(begin);
         this.end = new SimpleObjectProperty<>(end);
@@ -48,6 +83,10 @@ public class Treatment {
         return patient.getValue();
     }
 
+    public Nurse getNurse() {
+        return nurse.getValue();
+    }
+
     public String getDate() {
         return date.getValue().toString();
     }
@@ -88,6 +127,10 @@ public class Treatment {
         return patient;
     }
 
+    public SimpleObjectProperty<Nurse> nurseProperty() {
+        return nurse;
+    }
+
     public SimpleObjectProperty<LocalDate> dateProperty() {
         return date;
     }
@@ -117,6 +160,7 @@ public class Treatment {
                 .add("TREATMENT")
                 .add("ID: " + this.getId())
                 .add("Patient: " + this.getPatient().getSurName() + ", " + this.getPatient().getFirstName())
+                .add("Nurse: " + this.getNurse().getSurName() + ", " + this.getNurse().getFirstName())
                 .add("Date: " + this.getDate())
                 .add("Begin: " + this.getBegin())
                 .add("End: " + this.getEnd())

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

@@ -1,5 +1,6 @@
 package de.hitec.nhplus.treatment;
 
+import de.hitec.nhplus.nurse.Nurse;
 import de.hitec.nhplus.patient.Patient;
 import de.hitec.nhplus.utils.DateConverter;
 import javafx.beans.value.ChangeListener;
@@ -13,7 +14,14 @@ import java.time.LocalTime;
 
 import static de.hitec.nhplus.utils.Validator.*;
 
+/**
+ * The controller for creating and editing a specific {@link Treatment}.
+ *
+ * @author Dominik Säume
+ */
 public class TreatmentModalController {
+    @FXML
+    private Label labelNurseName;
     @FXML
     private Label labelFirstName;
     @FXML
@@ -33,18 +41,30 @@ public class TreatmentModalController {
     private AllTreatmentController controller;
     private Stage stage;
     private Patient patient;
+    private Nurse nurse;
     private Treatment treatment;
     private boolean isNewTreatment = false;
 
-    public void initialize(AllTreatmentController controller, Stage stage, Treatment treatment, Patient patient) {
+    /**
+     * Initialization method that is called after the binding of all the fields.
+     */
+    public void initialize(
+            AllTreatmentController controller,
+            Stage stage,
+            Treatment treatment,
+            Patient patient,
+            Nurse nurse
+    ) {
         this.controller = controller;
         this.stage = stage;
         this.patient = patient;
+        this.nurse = nurse;
         if (treatment == null) {
             isNewTreatment = true;
             LocalTime currentTime = LocalTime.now();
             this.treatment = new Treatment(
                     patient,
+                    nurse,
                     LocalDate.now(),
                     LocalTime.of(currentTime.getHour(), currentTime.getMinute()),
                     LocalTime.of(currentTime.getHour(), currentTime.getMinute()),
@@ -97,7 +117,11 @@ public class TreatmentModalController {
 
     }
 
+    /**
+     * Internal method to show the data in the view.
+     */
     private void showData() {
+        this.labelNurseName.setText(nurse.getSurName());
         this.labelFirstName.setText(patient.getFirstName());
         this.labelSurName.setText(patient.getSurName());
         LocalDate date = DateConverter.convertStringToLocalDate(treatment.getDate());
@@ -136,8 +160,4 @@ public class TreatmentModalController {
     public void handleCancel() {
         stage.close();
     }
-
-    public Treatment getTreatment() {
-        return treatment;
-    }
 }

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

@@ -2,6 +2,8 @@ package de.hitec.nhplus.treatment.database;
 
 import de.hitec.nhplus.datastorage.DaoFactory;
 import de.hitec.nhplus.datastorage.DaoImp;
+import de.hitec.nhplus.patient.Patient;
+import de.hitec.nhplus.nurse.Nurse;
 import de.hitec.nhplus.treatment.Treatment;
 import de.hitec.nhplus.utils.DateConverter;
 
@@ -12,6 +14,13 @@ import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ * The {@link TreatmentDao} is an implementation of the {@link de.hitec.nhplus.datastorage.Dao Dao}
+ * for the {@link Treatment} model.
+ *
+ * @author Bernd Heidemannn
+ * @author Dominik Säume
+ */
 public class TreatmentDao extends DaoImp<Treatment> {
 
     public TreatmentDao(Connection connection) {
@@ -22,16 +31,17 @@ public class TreatmentDao extends DaoImp<Treatment> {
     protected PreparedStatement getCreateStatement(Treatment treatment) throws SQLException {
         final String SQL = """
                     INSERT INTO treatment
-                    (patientId, date, begin, end, description, remark)
-                    VALUES (?, ?, ?, ?, ?, ?)
+                    (patientId, nurseId, date, begin, end, description, remark)
+                    VALUES (?, ?, ?, ?, ?, ?, ?)
                 """;
         PreparedStatement statement = this.connection.prepareStatement(SQL);
         statement.setInt(1, treatment.getPatient().getId());
-        statement.setString(2, treatment.getDate());
-        statement.setString(3, treatment.getBegin());
-        statement.setString(4, treatment.getEnd());
-        statement.setString(5, treatment.getDescription());
-        statement.setString(6, treatment.getRemarks());
+        statement.setInt(2, treatment.getNurse().getId());
+        statement.setString(3, treatment.getDate());
+        statement.setString(4, treatment.getBegin());
+        statement.setString(5, treatment.getEnd());
+        statement.setString(6, treatment.getDescription());
+        statement.setString(7, treatment.getRemarks());
         return statement;
     }
 
@@ -48,11 +58,12 @@ public class TreatmentDao extends DaoImp<Treatment> {
         return new Treatment(
                 result.getInt(1),
                 DaoFactory.getInstance().createPatientDAO().read(result.getInt(2)),
-                DateConverter.convertStringToLocalDate(result.getString(3)),
-                DateConverter.convertStringToLocalTime(result.getString(4)),
+                DaoFactory.getInstance().createNurseDAO().read(result.getInt(3)),
+                DateConverter.convertStringToLocalDate(result.getString(4)),
                 DateConverter.convertStringToLocalTime(result.getString(5)),
-                result.getString(6),
-                result.getString(7)
+                DateConverter.convertStringToLocalTime(result.getString(6)),
+                result.getString(7),
+                result.getString(8)
         );
     }
 
@@ -71,15 +82,33 @@ public class TreatmentDao extends DaoImp<Treatment> {
         return list;
     }
 
-    private PreparedStatement getReadAllTreatmentsOfOnePatientByPid(int patientId) throws SQLException {
+    /**
+     * Retrieves a list of {@link Treatment}s associated with a specific
+     * {@link Patient#id patient ID} from the database.
+     *
+     * @param patientId The {@link Patient#id ID} of the {@link Patient} whose {@link Treatment}s are to be retrieved.
+     * @return A {@link List} of {@link Treatment} objects associated with the specified {@link Patient} ID.
+     */
+    public List<Treatment> readTreatmentsByPatient(int patientId) throws SQLException {
         final String SQL = "SELECT * FROM treatment WHERE patientId = ?";
         PreparedStatement statement = this.connection.prepareStatement(SQL);
         statement.setInt(1, patientId);
-        return statement;
+        ResultSet result = statement.executeQuery();
+        return getListFromResultSet(result);
     }
 
-    public List<Treatment> readTreatmentsByPid(int patientId) throws SQLException {
-        ResultSet result = getReadAllTreatmentsOfOnePatientByPid(patientId).executeQuery();
+    /**
+     * Retrieves a list of {@link Treatment}s associated with a specific
+     * {@link Nurse#id patient ID} from the database.
+     *
+     * @param nurseId The {@link Nurse#id ID} of the {@link Nurse} whose {@link Treatment}s are to be retrieved.
+     * @return A {@link List} of {@link Treatment} objects associated with the specified {@link Nurse} ID.
+     */
+    public List<Treatment> readTreatmentsByNurse(int nurseId) throws SQLException {
+        final String SQL = "SELECT * FROM treatment WHERE nurseId = ?";
+        PreparedStatement statement = this.connection.prepareStatement(SQL);
+        statement.setInt(1, nurseId);
+        ResultSet result = statement.executeQuery();
         return getListFromResultSet(result);
     }
 
@@ -87,7 +116,6 @@ public class TreatmentDao extends DaoImp<Treatment> {
     protected PreparedStatement getUpdateStatement(Treatment treatment) throws SQLException {
         final String SQL = """
                    UPDATE treatment SET
-                   patientId = ?,
                    date = ?,
                    begin = ?,
                    end = ?,
@@ -96,13 +124,12 @@ public class TreatmentDao extends DaoImp<Treatment> {
                    WHERE id = ?
                 """;
         PreparedStatement statement = this.connection.prepareStatement(SQL);
-        statement.setInt(1, treatment.getPatient().getId());
-        statement.setString(2, treatment.getDate());
-        statement.setString(3, treatment.getBegin());
-        statement.setString(4, treatment.getEnd());
-        statement.setString(5, treatment.getDescription());
-        statement.setString(6, treatment.getRemarks());
-        statement.setInt(7, treatment.getId());
+        statement.setString(1, treatment.getDate());
+        statement.setString(2, treatment.getBegin());
+        statement.setString(3, treatment.getEnd());
+        statement.setString(4, treatment.getDescription());
+        statement.setString(5, treatment.getRemarks());
+        statement.setInt(6, treatment.getId());
         return statement;
     }
 

src/main/java/de/hitec/nhplus/utils/DateConverter.java

@@ -4,23 +4,44 @@ import java.time.LocalDate;
 import java.time.LocalTime;
 import java.time.format.DateTimeFormatter;
 
+/**
+ * A utility class that holds utility methods for date conversion.
+ *
+ * @author Bernd Heidemann
+ */
 public class DateConverter {
 
     private static final String DATE_FORMAT = "yyyy-MM-dd";
     private static final String TIME_FORMAT = "HH:mm";
 
+    /**
+     * @param date A date {@link String} in the format: yyyy-MM-dd.
+     * @return The converted date {@link String} as {@link LocalDate}.
+     */
     public static LocalDate convertStringToLocalDate(String date) {
         return LocalDate.parse(date, DateTimeFormatter.ofPattern(DATE_FORMAT));
     }
 
+    /**
+     * @param time A time {@link String} in the format: HH:mm.
+     * @return The converted time {@link String} as {@link LocalTime}.
+     */
     public static LocalTime convertStringToLocalTime(String time) {
         return LocalTime.parse(time, DateTimeFormatter.ofPattern(TIME_FORMAT));
     }
 
+    /**
+     * @param date A {@link LocalDate} which should be converted to a {@link String}.
+     * @return The converted {@link LocalDate} in the format: yyy-MM-dd.
+     */
     public static String convertLocalDateToString(LocalDate date) {
         return date.format(DateTimeFormatter.ofPattern(DATE_FORMAT));
     }
 
+    /**
+     * @param time A {@link LocalTime} which should be converted to a {@link String}.
+     * @return The converted {@link LocalTime} in the format: HH:mm.
+     */
     public static String convertLocalTimeToString(LocalTime time) {
         return time.format(DateTimeFormatter.ofPattern(TIME_FORMAT));
     }

src/main/java/de/hitec/nhplus/utils/Validator.java

@@ -5,8 +5,19 @@ import javafx.scene.control.Alert;
 import java.time.LocalDate;
 import java.time.LocalTime;
 
-public class Validator
-{
+/**
+ * A utility class for validating all kinds of data.
+ *
+ * @author Dominik Säume
+ * @author Ole Kück
+ */
+public class Validator {
+
+    /**
+     * Shows a modal with a specific validation error.
+     *
+     * @param type The type for which a validation error should be shown as {@link String}.
+     */
     public static void showValidationError(String type) {
         Alert alert = new Alert(Alert.AlertType.ERROR);
         alert.setTitle("Error");
@@ -14,6 +25,12 @@ public class Validator
         alert.setContentText("Invalid " + type + " !");
         alert.showAndWait();
     }
+
+    /**
+     * Validate that a {@link String} is a valid date.
+     *
+     * @param text The date {@link String} to validate.
+     */
     public static boolean isValidDate(String text) {
         if (text.isBlank()) {
             return false;
@@ -25,6 +42,12 @@ public class Validator
         }
         return true;
     }
+
+    /**
+     * Validate that a {@link LocalDate} is a valid date for storage in the database.
+     *
+     * @param date The {@link LocalDate} to validate.
+     */
     public static boolean isValidDate(LocalDate date) {
         if (date == null) {
             return false;
@@ -36,6 +59,12 @@ public class Validator
         }
         return true;
     }
+
+    /**
+     * Validate that a {@link String} is a valid time.
+     *
+     * @param text The time {@link String} to validate.
+     */
     public static boolean isValidTime(String text) {
         if (text.isBlank()) {
             return false;
@@ -47,6 +76,13 @@ public class Validator
         }
         return true;
     }
+
+    /**
+     * Validate that two time {@link String}s are a valid time range.
+     *
+     * @param start The starting time {@link String}.
+     * @param end   The ending time {@link String}.
+     */
     public static boolean isValidTimeRange(String start, String end) {
         if (
                 !isValidTime(start) || !isValidTime(end)
@@ -59,24 +95,57 @@ public class Validator
 
     }
 
+    /**
+     * Validate that a {@link String} is a valid description.
+     *
+     * @param text The {@link String} to validate.
+     */
     public static boolean isValidDescription(String text) {
         return !text.isBlank();
     }
+
+    /**
+     * Validate that a {@link String} is a valid first name.
+     *
+     * @param text The {@link String} to validate.
+     */
     public static boolean isValidFirstName(String text) {
         return !text.isBlank();
     }
+
+    /**
+     * Validate that a {@link String} is a valid surname.
+     *
+     * @param text The {@link String} to validate.
+     */
     public static boolean isValidSurName(String text) {
         return !text.isBlank();
     }
+
+    /**
+     * Validate that a {@link String} is a valid phone number.
+     *
+     * @param text The {@link String} to validate.
+     */
     public static boolean isValidPhoneNumber(String text) {
         return !text.isBlank();
     }
+
+    /**
+     * Validate that a {@link String} is a valid care level.
+     *
+     * @param text The {@link String} to validate.
+     */
     public static boolean isValidCareLevel(String text) {
         return !text.isBlank();
     }
+
+    /**
+     * Validate that a {@link String} is a valid room number.
+     *
+     * @param text The {@link String} to validate.
+     */
     public static boolean isValidRoomNumber(String text) {
         return !text.isBlank();
     }
-
 }
-

src/main/java/module-info.java

@@ -24,4 +24,9 @@ module de.hitec.nhplus {
     exports de.hitec.nhplus.nurse.database;
     opens de.hitec.nhplus.nurse to javafx.base, javafx.fxml;
     opens de.hitec.nhplus.nurse.database to javafx.base, javafx.fxml;
+
+    exports de.hitec.nhplus.medication;
+    exports de.hitec.nhplus.medication.database;
+    opens de.hitec.nhplus.medication to javafx.base, javafx.fxml;
+    opens de.hitec.nhplus.medication.database to javafx.base, javafx.fxml;
 }

src/main/resources/de/hitec/nhplus/main/MainWindowView.fxml

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<?import javafx.scene.control.Tab?>
-<?import javafx.scene.control.TabPane?>
+<?import javafx.scene.control.*?>
 <?import javafx.scene.layout.AnchorPane?>
 <TabPane
         fx:id="mainTabPane"
@@ -26,4 +25,7 @@
             </Tab>
         </TabPane>
     </Tab>
+    <Tab fx:id="medicationTab" text="Medikamente">
+        <AnchorPane fx:id="medicationPage"/>
+    </Tab>
 </TabPane>

src/main/resources/de/hitec/nhplus/medication/AllMedicationView.fxml

@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.*?>
+<?import javafx.scene.layout.BorderPane?>
+<?import javafx.scene.layout.HBox?>
+<BorderPane xmlns="http://javafx.com/javafx"
+            xmlns:fx="http://javafx.com/fxml"
+            fx:controller="de.hitec.nhplus.medication.AllMedicationController"
+>
+    <padding>
+        <Insets top="8" left="8" right="8" bottom="8"/>
+    </padding>
+    <center>
+        <TableView fx:id="tableView">
+            <columns>
+                <TableColumn
+                        fx:id="columnId"
+                        minWidth="40.0"
+                        text="ID"
+                />
+                <TableColumn
+                        fx:id="columnName"
+                        minWidth="140.0"
+                        text="Name"
+                />
+                <TableColumn
+                        fx:id="columnManufacturer"
+                        minWidth="140.0"
+                        text="Hersteller"
+                />
+                <TableColumn
+                        fx:id="columnIngredient"
+                        minWidth="140.0"
+                        text="Inhaltsstoffe"
+                />
+                <TableColumn
+                        fx:id="columnPossibleSideEffects"
+                        minWidth="200.0"
+                        text="Mögliche Nebenwirkungen"
+                />
+                <TableColumn
+                        fx:id="columnAdministrationMethod"
+                        minWidth="180.0"
+                        text="Verabreichungsmethode"
+                />
+                <TableColumn
+                        fx:id="columnCurrentStock"
+                        minWidth="100.0"
+                        text="Lagerbestand"
+                />
+            </columns>
+            <columnResizePolicy>
+                <TableView fx:constant="CONSTRAINED_RESIZE_POLICY"/>
+            </columnResizePolicy>
+        </TableView>
+    </center>
+    <bottom>
+        <BorderPane>
+            <BorderPane.margin>
+                <Insets top="8.0"/>
+            </BorderPane.margin>
+            <right>
+                <HBox spacing="8.0">
+                    <Button
+                            fx:id="buttonAdd"
+                            mnemonicParsing="false"
+                            prefWidth="90.0"
+                            text="Hinzufügen"
+                    />
+                    <Button
+                            fx:id="buttonDelete"
+                            mnemonicParsing="false"
+                            prefWidth="90.0"
+                            text="Löschen"
+                    />
+                </HBox>
+            </right>
+        </BorderPane>
+    </bottom>
+</BorderPane>

src/main/resources/de/hitec/nhplus/medication/database/Medication.sql

@@ -0,0 +1,9 @@
+CREATE TABLE medication
+(
+    id                   INTEGER PRIMARY KEY AUTOINCREMENT,
+    name                 TEXT    NOT NULL,
+    manufacturer         TEXT    NOT NULL,
+    possibleSideEffects  TEXT    NOT NULL,
+    administrationMethod TEXT    NOT NULL,
+    currentStock         INTEGER NOT NULL
+)

src/main/resources/de/hitec/nhplus/medication/database/Medication_Ingredient.sql

@@ -0,0 +1,6 @@
+CREATE TABLE medication_ingredient
+(
+    id   INTEGER NOT NULL ,
+    name TEXT NOT NULL,
+    FOREIGN KEY (id) REFERENCES medication (id) ON DELETE CASCADE
+)

src/main/resources/de/hitec/nhplus/nurse/AllNurseView.fxml

@@ -12,7 +12,7 @@
         <Insets top="8" left="8" right="8" bottom="8"/>
     </padding>
     <center>
-        <TableView fx:id="tableView" editable="true" layoutX="31.0" layoutY="40.0">
+        <TableView fx:id="tableView" editable="true">
             <columns>
                 <TableColumn
                         fx:id="columnId"

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

@@ -28,6 +28,11 @@
                         minWidth="80.0"
                         text="Patient"
                 />
+                <TableColumn
+                        fx:id="columnNurseName"
+                        minWidth="80.0"
+                        text="Pflegekraft"
+                />
                 <TableColumn
                         fx:id="columnDate"
                         maxWidth="-1.0"
@@ -66,7 +71,11 @@
                     <ComboBox
                             fx:id="comboBoxPatientSelection"
                             prefWidth="200.0"
-                            onAction="#handleComboBox"
+                            onAction="#handleComboBoxPatient"
+                    />
+                    <ComboBox
+                            fx:id="comboBoxNurseSelection"
+                            prefWidth="200.0"
                     />
                     <Button
                             mnemonicParsing="false"

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

@@ -30,21 +30,33 @@
             <Label
                     GridPane.rowIndex="0"
                     GridPane.columnIndex="0"
-                    text="Vorname:"
+                    text="Pfleger:"
             />
             <Label
                     GridPane.rowIndex="0"
                     GridPane.columnIndex="1"
                     prefWidth="200"
+                    fx:id="labelNurseName" text="Pfleger Name"
+            />
+            <!-- Row 1 -->
+            <Label
+                    GridPane.rowIndex="1"
+                    GridPane.columnIndex="0"
+                    text="Vorname:"
+            />
+            <Label
+                    GridPane.rowIndex="1"
+                    GridPane.columnIndex="1"
+                    prefWidth="200"
                     fx:id="labelFirstName" text="Vorname"
             />
             <Label
-                    GridPane.rowIndex="0"
+                    GridPane.rowIndex="1"
                     GridPane.columnIndex="3"
                     text="Nachname:"
             />
             <Label
-                    GridPane.rowIndex="0"
+                    GridPane.rowIndex="1"
                     GridPane.columnIndex="4"
                     prefWidth="200"
                     fx:id="labelSurName"

src/main/resources/de/hitec/nhplus/treatment/database/Treatment.sql

@@ -2,10 +2,12 @@ CREATE TABLE treatment
 (
     id          INTEGER PRIMARY KEY AUTOINCREMENT,
     patientId   INTEGER NOT NULL,
+    nurseId     INTEGER NOT NULL ,
     date        TEXT    NOT NULL,
     begin       TEXT    NOT NULL,
     end         TEXT    NOT NULL,
     description TEXT    NOT NULL,
     remark      TEXT    NOT NULL,
-    FOREIGN KEY (patientId) REFERENCES patient (id) ON DELETE CASCADE
+    FOREIGN KEY (patientId) REFERENCES patient (id) ON DELETE CASCADE,
+    FOREIGN KEY (nurseId) REFERENCES nurse (id) ON DELETE SET NULL
 )