Jackson serialization test

src/main/java/mops/gruppen2/controller/SwaggerAPIControllerExample.java

@@ -1,10 +1,13 @@
 package mops.gruppen2.controller;
 
 
+import com.fasterxml.jackson.core.JsonProcessingException;
 import com.github.javafaker.Faker;
 import io.swagger.annotations.ApiOperation;
 import io.swagger.annotations.ApiParam;
 import mops.gruppen2.domain.ProductSwaggerExample;
+import mops.gruppen2.domain.event.AddUserEvent;
+import mops.gruppen2.service.SerializationService;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.ArrayList;
@@ -19,6 +22,11 @@ public class SwaggerAPIControllerExample {
 
     private final Faker faker = new Faker();
     private final List<ProductSwaggerExample> products = new ArrayList<>();
+    private final SerializationService serializationService;
+
+    public SwaggerAPIControllerExample(SerializationService serializationService) {
+        this.serializationService = serializationService;
+    }
 
     @GetMapping("/get/all")
     @ApiOperation(value = "Erzeugt eine Liste mit allen gespeicherten Produkten")
@@ -44,4 +52,19 @@ public class SwaggerAPIControllerExample {
 
         return "Product saved successfully";
     }
+
+    @GetMapping("/json")
+    public void json() {
+        try {
+            serializationService.serializeEvent(new AddUserEvent(
+                    1,
+                    1,
+                    "Eins",
+                    faker.leagueOfLegends().location(),
+                    faker.name().lastName(),
+                    "123@email.de"));
+        } catch (JsonProcessingException e) {
+            e.printStackTrace();
+        }
+    }
 }

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

@@ -1,10 +1,12 @@
 package mops.gruppen2.domain.event;
 
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
 import lombok.Value;
 import lombok.experimental.NonFinal;
 
 @Value
 @NonFinal
+@JsonTypeInfo(include = JsonTypeInfo.As.WRAPPER_OBJECT, use = JsonTypeInfo.Id.NAME)
 public class Event {
     long event_id;
     long group_id;

src/main/java/mops/gruppen2/service/GroupService.java

@@ -12,14 +12,12 @@ public class GroupService {
     /**
      * Konstruiert eine vollständige Gruppe aus Events, welche dieselbe Gruppe betreffen.
      *
-     * @param event Initiales CreateGroup-Event
-     * @param eventList Die restlichen Events für diese Gruppe
+     * @param eventList Die Events für diese Gruppe
      * @return Gruppe auf aktuellem Stand
      */
     Group buildGroupFromEvents(List<Event> eventList) {
         Group newGroup = new Group();
         newGroup.apply(eventList);
-
         return newGroup;
     }
 }

src/main/java/mops/gruppen2/service/SerializationService.java

@@ -1,5 +1,11 @@
 package mops.gruppen2.service;
 
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import mops.gruppen2.domain.event.Event;
+import mops.gruppen2.repository.EventRepository;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Service;
 
 /**
@@ -7,4 +13,18 @@ import org.springframework.stereotype.Service;
  */
 @Service
 public class SerializationService {
+
+    private final EventRepository eventStore;
+    private final Logger log = LoggerFactory.getLogger(SerializationService.class);
+
+    public SerializationService(EventRepository eventStore) {
+        this.eventStore = eventStore;
+    }
+
+    public String serializeEvent(Event event) throws JsonProcessingException {
+        ObjectMapper mapper = new ObjectMapper();
+        String json =  mapper.writeValueAsString(event);
+        log.info(json);
+        return json;
+    }
 }