Merge branch 'db-introduce-database' of github.com:grossherzogin-elisabeth/eventplanner into db-introduce-database

Author: Lars Grahmann

backend/src/main/java/org/eventplanner/config/DatabaseConfig.java

@@ -14,9 +14,11 @@
 import org.springframework.transaction.PlatformTransactionManager;
 
 import lombok.AllArgsConstructor;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
 
 @Configuration
 @AllArgsConstructor
+@EnableTransactionManagement
 public class DatabaseConfig {
     private final Environment env;
 

backend/src/main/java/org/eventplanner/events/adapter/jpa/EventJpaRepositoryAdapter.java

@@ -4,7 +4,9 @@
 import org.eventplanner.events.entities.Event;
 import org.eventplanner.events.values.EventKey;
 import org.springframework.stereotype.Component;
+import org.springframework.transaction.annotation.Transactional;
 
+import java.beans.Transient;
 import java.util.List;
 import java.util.Optional;
 
@@ -24,32 +26,37 @@ public Optional<Event> findByKey(EventKey key) {
     }
 
     @Override
+    @Transactional(readOnly = true)
     public List<Event> findAllByYear(int year) {
         return this.eventJpaRepository.findAllByYear(year)
             .map(EventJpaEntity::toDomain)
             .toList();
     }
 
     @Override
+    @Transactional
     public Event create(Event event) {
         var entity = EventJpaEntity.fromDomain(event);
         entity = this.eventJpaRepository.save(entity);
         return entity.toDomain();
     }
 
     @Override
+    @Transactional
     public Event update(Event event) {
         var entity = EventJpaEntity.fromDomain(event);
         entity = this.eventJpaRepository.save(entity);
         return entity.toDomain();
     }
 
     @Override
+    @Transactional
     public void deleteByKey(EventKey key) {
         this.eventJpaRepository.deleteById(key.value());
     }
 
     @Override
+    @Transactional
     public void deleteAllByYear(int year) {
         this.eventJpaRepository.deleteAllByYear(year);
     }