general style improvements + javadoc

src/main/java/mops/gruppen2/domain/Aggregate.java

@@ -5,6 +5,9 @@ import mops.gruppen2.domain.event.Event;
 
 import java.lang.reflect.Method;
 
+/**
+ * Repräsentiert viele Events als aggregiertes Objekt.
+ */
 public abstract class Aggregate {
 
     @Getter
@@ -17,7 +20,7 @@ public abstract class Aggregate {
     /**
      * Ruft die spezifische applyEvent-Methode im entsprechenden Aggregat auf.
      *
-     * @param event Einzelne Änderung an dem Aggregat
+     * @param event Event, welches aggregiert wird
      */
     public void applyEvent(Event event) {
         try {

src/main/java/mops/gruppen2/domain/Role.java

@@ -1,5 +1,5 @@
 package mops.gruppen2.domain;
 
 public enum Role {
-    ORGA, ADMIN
+    ORGA, ADMIN, STUDENT
 }

src/main/java/mops/gruppen2/domain/User.java

@@ -6,8 +6,9 @@ import lombok.Data;
 @Data
 @AllArgsConstructor
 public class User {
-	String user_id;
-	String givenname;
-	String familyname;
-	String email;
+
+    String user_id;
+    String givenname;
+    String familyname;
+    String email;
 }

src/main/java/mops/gruppen2/domain/event/AddUserEvent.java

@@ -4,22 +4,27 @@ import lombok.EqualsAndHashCode;
 import lombok.Value;
 import mops.gruppen2.domain.User;
 
+/**
+ * Fügt einen einzelnen Nutzer einer Gruppe hinzu.
+ */
 @EqualsAndHashCode(callSuper = true)
 @Value
-public class AddUserEvent extends Event{
-	String givenname, familyname, email;
+public class AddUserEvent extends Event {
+    String givenname;
+    String familyname;
+    String email;
 
-	public AddUserEvent(long event_id, long group_id, String user_id, String givenname, String familyname, String email) {
-		super(event_id, group_id, user_id);
-		this.givenname = givenname;
-		this.familyname = familyname;
-		this.email = email;
-	}
+    public AddUserEvent(long event_id, long group_id, String user_id, String givenname, String familyname, String email) {
+        super(event_id, group_id, user_id);
+        this.givenname = givenname;
+        this.familyname = familyname;
+        this.email = email;
+    }
 
-	public AddUserEvent(long event_id, long group_id, User user) {
-		super(event_id, group_id, user.getUser_id());
-		this.givenname = user.getGivenname();
-		this.familyname = user.getFamilyname();
-		this.email = user.getEmail();
-	}
+    public AddUserEvent(long event_id, long group_id, User user) {
+        super(event_id, group_id, user.getUser_id());
+        this.givenname = user.getGivenname();
+        this.familyname = user.getFamilyname();
+        this.email = user.getEmail();
+    }
 }

src/main/java/mops/gruppen2/domain/event/CreateGroupEvent.java

@@ -6,11 +6,12 @@ import lombok.Value;
 @EqualsAndHashCode(callSuper = true)
 @Value
 public class CreateGroupEvent extends Event {
-	String groupTitle, groupDescription;
+    String groupTitle;
+    String groupDescription;
 
-	public CreateGroupEvent(long event_id, long group_id, String user_id, String groupTitle, String groupDescription) {
-		super(event_id, group_id, user_id);
-		this.groupTitle = groupTitle;
-		this.groupDescription = groupDescription;
-	}
+    public CreateGroupEvent(long event_id, long group_id, String user_id, String groupTitle, String groupDescription) {
+        super(event_id, group_id, user_id);
+        this.groupTitle = groupTitle;
+        this.groupDescription = groupDescription;
+    }
 }

src/main/java/mops/gruppen2/domain/event/DeleteUserEvent.java

@@ -3,9 +3,12 @@ package mops.gruppen2.domain.event;
 import lombok.EqualsAndHashCode;
 import lombok.Value;
 
+/**
+ * Entfernt ein einzelnes Mitglied einer Gruppe.
+ */
 @EqualsAndHashCode(callSuper = true)
 @Value
-public class DeleteUserEvent extends Event{
+public class DeleteUserEvent extends Event {
 
     public DeleteUserEvent(long event_id, long group_id, String user_id) {
         super(event_id, group_id, user_id);

src/main/java/mops/gruppen2/domain/event/Event.java

@@ -6,7 +6,7 @@ import lombok.experimental.NonFinal;
 @Value
 @NonFinal
 public class Event {
-	long event_id;
-	long group_id;
-	String user_id;
+    long event_id;
+    long group_id;
+    String user_id;
 }

src/main/java/mops/gruppen2/domain/event/UpdateGroupDescriptionEvent.java

@@ -3,6 +3,9 @@ package mops.gruppen2.domain.event;
 import lombok.EqualsAndHashCode;
 import lombok.Value;
 
+/**
+ * Ändert nur die Gruppenbeschreibung.
+ */
 @EqualsAndHashCode(callSuper = true)
 @Value
 public class UpdateGroupDescriptionEvent extends Event {

src/main/java/mops/gruppen2/domain/event/UpdateGroupTitleEvent.java

@@ -3,6 +3,9 @@ package mops.gruppen2.domain.event;
 import lombok.EqualsAndHashCode;
 import lombok.Value;
 
+/**
+ * Ändert nur den Gruppentitel.
+ */
 @EqualsAndHashCode(callSuper = true)
 @Value
 public class UpdateGroupTitleEvent extends Event {

src/main/java/mops/gruppen2/domain/event/UpdateRoleEvent.java

@@ -4,6 +4,9 @@ import lombok.EqualsAndHashCode;
 import lombok.Value;
 import mops.gruppen2.domain.Role;
 
+/**
+ * Aktualisiert die Gruppenrolle eines Teilnehmers.
+ */
 @EqualsAndHashCode(callSuper = true)
 @Value
 public class UpdateRoleEvent extends Event {