Merge branch 'JPA' into 'grademanager_v1.0'

Jpa

See merge request !2

.gitignore

+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
\ No newline at end of file

.idea/jpa-buddy.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="JpaBuddyIdeaProjectConfig" ddlActionDbType="maria">
+    <option name="defaultUnitInitialized" value="true" />
+  </component>
+</project>
\ No newline at end of file

.idea/misc.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_18" project-jdk-name="18" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="jpab" />
+  </component>
+</project>
\ No newline at end of file

.idea/uiDesigner.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Palette2">
+    <group name="Swing">
+      <item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="com.intellij.uiDesigner.VSpacer" tooltip-text="Vertical Spacer" icon="/com/intellij/uiDesigner/icons/vspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="1" anchor="0" fill="2" />
+      </item>
+      <item class="javax.swing.JPanel" icon="/com/intellij/uiDesigner/icons/panel.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JScrollPane" icon="/com/intellij/uiDesigner/icons/scrollPane.svg" removable="false" auto-create-binding="false" can-attach-label="true">
+        <default-constraints vsize-policy="7" hsize-policy="7" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JButton" icon="/com/intellij/uiDesigner/icons/button.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="0" fill="1" />
+        <initial-values>
+          <property name="text" value="Button" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="RadioButton" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JCheckBox" icon="/com/intellij/uiDesigner/icons/checkBox.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="CheckBox" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JLabel" icon="/com/intellij/uiDesigner/icons/label.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="Label" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JTextField" icon="/com/intellij/uiDesigner/icons/textField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JPasswordField" icon="/com/intellij/uiDesigner/icons/passwordField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JEditorPane" icon="/com/intellij/uiDesigner/icons/editorPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="2" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="2" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTree" icon="/com/intellij/uiDesigner/icons/tree.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSplitPane" icon="/com/intellij/uiDesigner/icons/splitPane.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSlider" icon="/com/intellij/uiDesigner/icons/slider.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSeparator" icon="/com/intellij/uiDesigner/icons/separator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JProgressBar" icon="/com/intellij/uiDesigner/icons/progressbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1">
+          <preferred-size width="-1" height="20" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
+      </item>
+    </group>
+  </component>
+</project>
\ No newline at end of file

.idea/vcs.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file

.idea/workspace.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AutoImportSettings">
+    <option name="autoReloadType" value="SELECTIVE" />
+  </component>
+  <component name="ChangeListManager">
+    <list default="true" id="0d616560-06e0-45af-8dd9-ccab83963a0f" name="Changes" comment="Hibernate ORM for DB">
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/Application.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/Application.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/classes/Course.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/classes/Course.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/classes/CoursesOfStudy.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/classes/CoursesOfStudy.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/classes/Enrollment.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/classes/Enrollment.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/classes/Lecturer.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/classes/Lecturer.java" afterDir="false" />
+    </list>
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="Class" />
+      </list>
+    </option>
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
+  </component>
+  <component name="JpbToolWindowState">
+    <option name="myId2FirstActivated">
+      <map>
+        <entry key="com.haulmont.jpb.jpaInspector" value="true" />
+        <entry key="com.haulmont.jpb.jpaPalette" value="true" />
+        <entry key="com.haulmont.jpb.jpaStructure" value="true" />
+      </map>
+    </option>
+    <option name="myId2Visible">
+      <map>
+        <entry key="com.haulmont.jpb.jpaInspector" value="false" />
+        <entry key="com.haulmont.jpb.jpaPalette" value="false" />
+        <entry key="com.haulmont.jpb.jpaStructure" value="false" />
+      </map>
+    </option>
+  </component>
+  <component name="MarkdownSettingsMigration">
+    <option name="stateVersion" value="1" />
+  </component>
+  <component name="ProblemsViewState">
+    <option name="selectedTabId" value="CurrentFile" />
+  </component>
+  <component name="ProjectId" id="2AA7EXVwC9qbqrXYGnaxyK7xE03" />
+  <component name="ProjectLevelVcsManager" settingsEditedManually="true">
+    <ConfirmationsSetting value="2" id="Add" />
+  </component>
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent">{
+  &quot;keyToString&quot;: {
+    &quot;ASKED_ADD_EXTERNAL_FILES&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.OpenProjectViewOnStart&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.ShowReadmeOnStart&quot;: &quot;true&quot;,
+    &quot;SHARE_PROJECT_CONFIGURATION_FILES&quot;: &quot;true&quot;,
+    &quot;project.structure.last.edited&quot;: &quot;Modules&quot;,
+    &quot;project.structure.proportion&quot;: &quot;0.15&quot;,
+    &quot;project.structure.side.proportion&quot;: &quot;0.2&quot;,
+    &quot;settings.editor.selected.configurable&quot;: &quot;DBNavigator.Project.ConnectionSettings&quot;
+  }
+}</component>
+  <component name="RecentsManager">
+    <key name="MoveFile.RECENT_KEYS">
+      <recent name="C:\Users\tayfu\IdeaProjects\jpa-hibernate\src\main" />
+    </key>
+  </component>
+  <component name="RunManager">
+    <configuration name="Application" type="Application" factoryName="Application" temporary="true" nameIsGenerated="true">
+      <option name="MAIN_CLASS_NAME" value="Application" />
+      <module name="jpa-hibernate" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <recent_temporary>
+      <list>
+        <item itemvalue="Application.Application" />
+      </list>
+    </recent_temporary>
+  </component>
+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="0d616560-06e0-45af-8dd9-ccab83963a0f" name="Changes" comment="" />
+      <created>1654440427551</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1654440427551</updated>
+    </task>
+    <task id="LOCAL-00001" summary="Hibernate ORM for DB">
+      <created>1655210036433</created>
+      <option name="number" value="00001" />
+      <option name="presentableId" value="LOCAL-00001" />
+      <option name="project" value="LOCAL" />
+      <updated>1655210036433</updated>
+    </task>
+    <option name="localTasksCounter" value="2" />
+    <servers />
+  </component>
+  <component name="Vcs.Log.Tabs.Properties">
+    <option name="TAB_STATES">
+      <map>
+        <entry key="MAIN">
+          <value>
+            <State />
+          </value>
+        </entry>
+      </map>
+    </option>
+  </component>
+  <component name="VcsManagerConfiguration">
+    <option name="ADD_EXTERNAL_FILES_SILENTLY" value="true" />
+    <MESSAGE value="Hibernate ORM for DB" />
+    <option name="LAST_COMMIT_MESSAGE" value="Hibernate ORM for DB" />
+  </component>
+</project>
\ No newline at end of file

pom.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example</groupId>
+    <artifactId>jpa-hibernate</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>18</maven.compiler.source>
+        <maven.compiler.target>18</maven.compiler.target>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>jakarta.persistence</groupId>
+            <artifactId>jakarta.persistence-api</artifactId>
+            <version>3.1.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-core-jakarta</artifactId>
+            <version>5.6.8.Final</version>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish.jaxb</groupId>
+            <artifactId>jaxb-runtime</artifactId>
+            <version>3.0.2</version>
+        </dependency>
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>8.0.29</version>
+        </dependency>
+    </dependencies>
+
+</project>
\ No newline at end of file

src/main/Application.java

+import classes.*;
+import enumeration.*;
+
+import java.time.Duration;
+
+/**
+ * Defines the entry point of the Java application.
+ */
+public class Application
+{
+    private static JpaService jpaService = JpaService.getInstance();
+
+    public static void main(String[] args)
+    {
+        try
+        {
+            jpaService.runInTransaction(entityManager -> {
+                // name, semester, courseType, sws, ects, examType, isCredited
+                //entityManager.persist(new Course("Numerische Methoden", Semester.SIXTH.getSemester(), CourseType.REQUIRED.getCourseType(), 4, 5, ExamType.WRITTEN.getExamType(), null));
+                //entityManager.persist(new Course("Echtzeitsysteme", Semester.SIXTH.getSemester(), CourseType.REQUIRED.getCourseType(), 4, 5, ExamType.WRITTEN.getExamType(), null));
+                //entityManager.persist(new Course("Digitale Signalverarbeitung", Semester.SIXTH.getSemester(), CourseType.REQUIRED.getCourseType(), 4, 5, ExamType.WRITTEN.getExamType(), null));
+                //int id, String name, String degree, int duration, int fees, String fieldOfStudy
+                CoursesOfStudy coursesOfStudy = new CoursesOfStudy("Angewandte Informatik", Degree.BACHELOR_OF_SCIENCE.getDegree(), 7, 62, FieldOfStudy.B_ACS_EMBEDDED_SYSTEMS.getFieldOfStudy());
+
+                coursesOfStudy.addCourse(new Course("Systemprogrammierung", Semester.SIXTH.getSemester(), CourseType.REQUIRED.getCourseType(), 4, 5, ExamType.WRITTEN.getExamType(), null));
+
+                entityManager.persist(coursesOfStudy);
+
+                return null;
+            });
+        }
+        finally
+        {
+            jpaService.closeResource();
+        }
+    }
+}
\ No newline at end of file

src/main/JpaService.java

+import jakarta.persistence.EntityManager;
+import jakarta.persistence.EntityManagerFactory;
+import jakarta.persistence.EntityTransaction;
+import jakarta.persistence.Persistence;
+import java.util.function.Function;
+
+/**
+ * A singleton implementation that encapsulates the JPA logic.
+ * You can configure the database connection in the
+ * {@link /src/main/resources/META-INF/persistence.xml} file.
+ */
+public class JpaService
+{
+    private static JpaService instance;
+    private EntityManagerFactory entityManagerFactory;
+
+    private JpaService()
+    {
+        entityManagerFactory = Persistence.createEntityManagerFactory("jpa-hibernate-notenmanager");
+    }
+
+    public static synchronized JpaService getInstance()
+    {
+        return instance == null ? instance = new JpaService() : instance;
+    }
+
+    public void closeResource()
+    {
+        if(entityManagerFactory != null)
+        {
+            entityManagerFactory.close();
+        }
+    }
+
+    public EntityManagerFactory getEntityManagerFactory()
+    {
+        return entityManagerFactory;
+    }
+
+    /**
+     * Runs the specified function inside a transaction boundary. The function has
+     * access to a ready to use {@link EntityManager} and can return any type of
+     * value ({@code T}).
+     *
+     * @param function The function to run.
+     * @param <T>      The function's return type.
+     * @return the value returned by the specified function.
+     */
+    public <T> T runInTransaction(Function <EntityManager, T> function)
+    {
+        EntityManager entityManager = entityManagerFactory.createEntityManager();
+        EntityTransaction entityTransaction = entityManager.getTransaction();
+        boolean isPersisted = false;
+
+        entityTransaction.begin();
+
+        try
+        {
+            T returnValue = function.apply(entityManager);
+            isPersisted = true;
+
+            return returnValue;
+        }
+        finally
+        {
+            if(isPersisted)
+            {
+                entityTransaction.commit();
+            }
+            else
+            {
+                entityTransaction.rollback();
+            }
+        }
+    }
+}

src/main/abstractClasses/UniversityMember.java

+package abstractClasses;
+
+import enumeration.Gender;
+import jakarta.persistence.*;
+
+import java.util.Objects;
+
+@MappedSuperclass
+@Table(name = "Hochschulmitglied")
+public abstract class UniversityMember
+{
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "ID")
+    private int id;
+
+    @Column(name = "Geschlecht")
+    private String gender;
+
+    @Column(name = "Vorname")
+    private String firstName;
+
+    @Column(name = "Nachname")
+    private String lastName;
+
+    @Column(name = "Wohnort")
+    private String placeOfResidence;
+
+    @Column(name = "Geburtsort")
+    private String birthPlace;
+
+    @Column(name = "Hochschul E-Mail")
+    private String officialEmail;
+
+    @Column(name = "Private E-Mail")
+    private String privateEmail;
+
+    @Column(name = "Angemeldet")
+    private Boolean isSignedUpForCourse;
+
+    protected UniversityMember()
+    {
+
+    }
+
+    protected UniversityMember(int id, String gender, String firstName, String lastName, String placeOfResidence, String birthPlace,
+                            String officialEmail, String privateEmail, Boolean isSignedUpForCourse)
+    {
+        this.id = id;
+        this.gender = gender;
+        this.firstName = firstName;
+        this.lastName = lastName;
+        this.placeOfResidence = placeOfResidence;
+        this.birthPlace = birthPlace;
+        this.officialEmail = officialEmail;
+        this.privateEmail = privateEmail;
+        this.isSignedUpForCourse = isSignedUpForCourse;
+    }
+
+    @Override
+    public boolean equals(Object o)
+    {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        UniversityMember that = (UniversityMember) o;
+        return id == that.id;
+    }
+
+    @Override
+    public int hashCode()
+    {
+        return Objects.hash(id);
+    }
+
+    public int getId()
+    {
+        return id;
+    }
+
+    public void setId(int id)
+    {
+        this.id = id;
+    }
+
+    public String getGender()
+    {
+        return gender;
+    }
+
+    public void setGender(String gender)
+    {
+        this.gender = gender;
+    }
+
+    public String getFirstName()
+    {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName)
+    {
+        this.firstName = firstName;
+    }
+
+    public String getLastName()
+    {
+        return lastName;
+    }
+
+    public void setLastName(String lastName)
+    {
+        this.lastName = lastName;
+    }
+
+    public String getPlaceOfResidence()
+    {
+        return placeOfResidence;
+    }
+
+    public void setPlaceOfResidence(String placeOfResidence)
+    {
+        this.placeOfResidence = placeOfResidence;
+    }
+
+    public String getBirthPlace()
+    {
+        return birthPlace;
+    }
+
+    public void setBirthPlace(String birthPlace)
+    {
+        this.birthPlace = birthPlace;
+    }
+
+    public String getOfficialEmail()
+    {
+        return officialEmail;
+    }
+
+    public void setOfficialEmail(String officialEmail)
+    {
+        this.officialEmail = officialEmail;
+    }
+
+    public String getPrivateEmail()
+    {
+        return privateEmail;
+    }
+
+    public void setPrivateEmail(String privateEmail)
+    {
+        this.privateEmail = privateEmail;
+    }
+
+    public Boolean getSignedUpForCourse()
+    {
+        return isSignedUpForCourse;
+    }
+
+    public void setSignedUpForCourse(Boolean signedUpForCourse)
+    {
+        isSignedUpForCourse = signedUpForCourse;
+    }
+}

src/main/classes/Course.java

+package classes;
+
+import jakarta.persistence.*;
+import java.util.Objects;
+
+@Entity
+@Table(name = "Kurs")
+public class Course
+{
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "ID")
+    private int id;
+
+    @Column(name = "Name")
+    private String name;
+
+    @Column(name = "Semester")
+    private int semester;
+
+    @Column(name = "Typ")
+    private String courseType;
+
+    @Column(name = "SWS")
+    private int sws;
+
+    @Column(name = "ECTS")
+    private double ects;
+
+    @Column(name = "Prüfungstyp")
+    private String examType;
+
+    @Column(name = "Anrechnung")
+    private Boolean isCredited;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    private CoursesOfStudy coursesOfStudy;
+
+    public Course()
+    {
+
+    }
+
+    public Course(String name, int semester, String courseType, int sws, double ects, String examType, Boolean isCredited)
+    {
+        this.name = name;
+        this.semester = semester;
+        this.courseType = courseType;
+        this.sws = sws;
+        this.ects = ects;
+        this.examType = examType;
+        this.isCredited = isCredited;
+    }
+
+    @Override
+    public boolean equals(Object o)
+    {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Course course = (Course) o;
+        return id == course.id;
+    }
+
+    @Override
+    public int hashCode()
+    {
+        return Objects.hash(id);
+    }
+
+    public int getId()
+    {
+        return id;
+    }
+
+    public void setId(int id)
+    {
+        this.id = id;
+    }
+
+    public String getName()
+    {
+        return name;
+    }
+
+    public void setName(String name)
+    {
+        this.name = name;
+    }
+
+    public int getSemester()
+    {
+        return semester;
+    }
+
+    public void setSemester(int semester)
+    {
+        this.semester = semester;
+    }
+
+    public String getCourseType()
+    {
+        return courseType;
+    }
+
+    public void setCourseType(String courseType)
+    {
+        this.courseType = courseType;
+    }
+
+    public int getSws()
+    {
+        return sws;
+    }
+
+    public void setSws(int sws)
+    {
+        this.sws = sws;
+    }
+
+    public double getEcts()
+    {
+        return ects;
+    }
+
+    public void setEcts(double ects)
+    {
+        this.ects = ects;
+    }
+
+    public String getExamType()
+    {
+        return examType;
+    }
+
+    public void setExamType(String examType)
+    {
+        this.examType = examType;
+    }
+
+    public Boolean isCredited()
+    {
+        return isCredited;
+    }
+
+    public void setCredited(Boolean credited)
+    {
+        isCredited = credited;
+    }
+
+    public void setCoursesOfStudy(CoursesOfStudy coursesOfStudy)
+    {
+        this.coursesOfStudy = coursesOfStudy;
+    }
+}

src/main/classes/CoursesOfStudy.java

+package classes;
+
+import jakarta.persistence.*;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+@Table(name = "Studiengang")
+public class CoursesOfStudy
+{
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "ID")
+    private int id;
+
+    @Column(name = "Name")
+    private String name;
+
+    @Column(name = "Abschluss")
+    private String degree;
+
+    @Column(name = "Dauer")
+    private int duration;
+
+    @Column(name = "Studiengebühr")
+    private int fees;
+
+    @Column(name = "Schwerpunkt")
+    private String fieldOfStudy;
+
+    @OneToMany(
+            mappedBy = "coursesOfStudy",
+            cascade = CascadeType.ALL,
+            orphanRemoval = true
+    )
+    private List<Course> courses = new ArrayList<>();
+    @ManyToOne
+    @JoinColumn(name = "courses_of_study_id")
+    private CoursesOfStudy coursesOfStudy;
+
+    public CoursesOfStudy getCoursesOfStudy() {
+        return coursesOfStudy;
+    }
+
+    /*
+    @ManyToOne(cascade = CascadeType.ALL)
+    @JoinColumn(name = "courses_of_study_id")
+    private CoursesOfStudy coursesOfStudy;
+    */
+
+    public CoursesOfStudy()
+    {
+
+    }
+
+    public CoursesOfStudy(String name, String degree, int duration, int fees, String fieldOfStudy)
+    {
+        this.name = name;
+        this.degree = degree;
+        this.duration = duration;
+        this.fees = fees;
+        this.fieldOfStudy = fieldOfStudy;
+    }
+
+    @Override
+    public boolean equals(Object o)
+    {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        CoursesOfStudy that = (CoursesOfStudy) o;
+        return id == that.id;
+    }
+
+    @Override
+    public int hashCode()
+    {
+        return Objects.hash(id);
+    }
+
+    public int getId()
+    {
+        return id;
+    }
+
+    public void setId(int id)
+    {
+        this.id = id;
+    }
+
+    public String getName()
+    {
+        return name;
+    }
+
+    public void setName(String name)
+    {
+        this.name = name;
+    }
+
+    public String getDegree()
+    {
+        return degree;
+    }
+
+    public void setDegree(String degree)
+    {
+        this.degree = degree;
+    }
+
+    public int getDuration()
+    {
+        return duration;
+    }
+
+    public void setDuration(int duration)
+    {
+        this.duration = duration;
+    }
+
+    public int getFees()
+    {
+        return fees;
+    }
+
+    public void setFees(int fees)
+    {
+        this.fees = fees;
+    }
+
+    public String getFieldOfStudy()
+    {
+        return fieldOfStudy;
+    }
+
+    public void setFieldOfStudy(String fieldOfStudy)
+    {
+        this.fieldOfStudy = fieldOfStudy;
+    }
+
+    public void addCourse(Course course)
+    {
+        courses.add(course);
+        course.setCoursesOfStudy(this);
+    }
+
+    public void removeCourse(Course course)
+    {
+        courses.remove(course);
+        course.setCoursesOfStudy(null);
+    }
+}

src/main/classes/Enrollment.java

+package classes;
+
+import jakarta.persistence.*;
+
+import java.time.LocalDateTime;
+import java.util.Objects;
+
+@Entity
+@Table(name = "Kursanmeldung")
+public class Enrollment
+{
+    @Id
+    @Column(name = "ID")
+    private int id;
+
+    @ManyToOne
+    @JoinColumn(name = "Matrikelnummer")
+    Student student;
+
+    @ManyToOne
+    @JoinColumn(name = "Kursnummer")
+    Course course;
+
+    @Column(name = "Datum der Anmeldung")
+    private LocalDateTime enrollmentDate;
+
+    @Column(name = "Note")
+    private double grade;
+
+    public Enrollment()
+    {
+
+    }
+
+    public Enrollment(Student student, Course course, LocalDateTime enrollmentDate)
+    {
+        this.student = student;
+        this.course = course;
+        this.enrollmentDate = enrollmentDate;
+    }
+
+    @Override
+    public boolean equals(Object o)
+    {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Enrollment that = (Enrollment) o;
+        return student == that.student && course == that.course;
+    }
+
+    @Override
+    public int hashCode()
+    {
+        return Objects.hash(student, course);
+    }
+
+    public Student getStudent()
+    {
+        return student;
+    }
+
+    public void setStudent(Student student)
+    {
+        this.student = student;
+    }
+
+    public Course getCourse()
+    {
+        return course;
+    }
+
+    public void setCourse(Course course)
+    {
+        this.course = course;
+    }
+
+    public LocalDateTime getEnrollmentDate()
+    {
+        return enrollmentDate;
+    }
+
+    public void setEnrollmentDate(LocalDateTime enrollmentDate)
+    {
+        this.enrollmentDate = enrollmentDate;
+    }
+
+    public double getGrade()
+    {
+        return grade;
+    }
+
+    public void setGrade(double grade)
+    {
+        this.grade = grade;
+    }
+}

src/main/classes/Lecturer.java

+package classes;
+
+import abstractClasses.UniversityMember;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "Dozent")
+public class Lecturer extends UniversityMember
+{
+    @Column(name = "Fakultaet")
+    String faculty;
+
+    public Lecturer()
+    {
+
+    }
+
+    public Lecturer(int id, String gender, String firstName, String lastName, String placeOfResidence, String birthPlace,
+                    String officialEmail, String privateEmail, Boolean isSignedUpForCourse, String faculty)
+    {
+        super(id, gender, firstName, lastName, placeOfResidence, birthPlace,
+                officialEmail, privateEmail, isSignedUpForCourse);
+        this.faculty = faculty;
+    }
+
+    public String getFaculty()
+    {
+        return faculty;
+    }
+
+    public void setFaculty(String faculty)
+    {
+        this.faculty = faculty;
+    }
+}

src/main/classes/Student.java

+package classes;
+
+import abstractClasses.UniversityMember;
+import interfaces.Calculable;
+import jakarta.persistence.*;
+
+import java.util.Set;
+
+@Entity
+@Table(name = "Student")
+public class Student extends UniversityMember implements Calculable
+{
+    @Column(name = "Status")
+    private String status;
+
+    @Column(name = "Gebühren bezahlt")
+    private boolean paidFees;
+
+    @Column(name = "Semester")
+    private int semester;
+
+    @OneToMany(mappedBy = "student")
+    Set<Enrollment> enrollments;
+
+    public Student()
+    {
+
+    }
+
+    public Student(int id, String gender, String firstName, String lastName, String placeOfResidence, String birthPlace,
+                   String officialEmail, String privateEmail, Boolean isSignedUpForCourse, String status,
+                   boolean paidFess, int semester)
+    {
+        super(id, gender, firstName, lastName, placeOfResidence, birthPlace,
+                officialEmail, privateEmail, isSignedUpForCourse);
+        this.status = status;
+        this.paidFees = paidFess;
+        this.semester = semester;
+    }
+
+    @Override
+    public double calculateAverage()
+    {
+        return 0;
+    }
+
+    @Override
+    public int calculateMedian()
+    {
+        return 0;
+    }
+
+    public String getStatus()
+    {
+        return status;
+    }
+
+    public void setStatus(String status)
+    {
+        this.status = status;
+    }
+
+    public boolean isPaidFees()
+    {
+        return paidFees;
+    }
+
+    public void setPaidFees(boolean paidFees)
+    {
+        this.paidFees = paidFees;
+    }
+
+    public int getSemester()
+    {
+        return semester;
+    }
+
+    public void setSemester(int semester)
+    {
+        this.semester = semester;
+    }
+}
\ No newline at end of file

src/main/enumeration/CourseType.java

+package enumeration;
+
+public enum CourseType
+{
+    COMPULSORY("FWP"),
+    ELECTIVE("AWP"),
+    PLV("PLV"),
+    REQUIRED("Required"),
+    VOLUNTARY("Voluntary");
+
+    private String courseType;
+
+    private CourseType(String courseType)
+    {
+        this.courseType = courseType;
+    }
+
+    public String getCourseType()
+    {
+        return courseType;
+    }
+}

src/main/enumeration/Degree.java

+package enumeration;
+
+public enum Degree
+{
+    BACHELOR_OF_ARTS("B.A."),
+    BACHELOR_OF_ENGINEERING("B.Eng."),
+    BACHELOR_OF_SCIENCE("B.Sc."),
+    MASTER_OF_ARTS("M.A."),
+    MASTER_OF_ENGINEERING("M.Eng."),
+    MASTER_OF_SCIENCE("M.Sc.");
+
+    private String degree;
+
+    private Degree(String degree)
+    {
+        this.degree = degree;
+    }
+
+    public String getDegree()
+    {
+        return degree;
+    }
+}

src/main/enumeration/ExamType.java

+package enumeration;
+
+public enum ExamType
+{
+    BACHELOR_THESIS("BA"),
+    INTERNSHIP("Pr"),
+    MASTER_THESIS("MA"),
+    ORAL("mdlP"),
+    PERFORMANCE_RECORD("LN"),
+    PROOF_OF_PARTICIPATION("TN"),
+    RESEARCH_PROJECT("PStA"),
+    WRITTEN("schrP");
+
+    private String examType;
+
+    private ExamType(String examType)
+    {
+        this.examType = examType;
+    }
+
+    public String getExamType()
+    {
+        return examType;
+    }
+}

src/main/enumeration/FieldOfStudy.java

+package enumeration;
+
+public enum FieldOfStudy
+{
+    B_ACS_EMBEDDED_SYSTEMS("Embedded Systems"),
+    B_ACS_MOBILE_AND_SPATIAL_SYSTEMS("Mobile and Spatial Systems");
+
+    private String fieldOfStudy;
+
+    private FieldOfStudy(String fieldOfStudy)
+    {
+        this.fieldOfStudy = fieldOfStudy;
+    }
+
+    public String getFieldOfStudy()
+    {
+        return fieldOfStudy;
+    }
+}