improved account controller

account/src/main/java/de/muehlencord/shared/account/business/AbstractController.java

@@ -78,7 +78,7 @@ public abstract class AbstractController<T> {
         if (Updateable.class.isAssignableFrom(entity.getClass())) {
             Updateable updateable = (Updateable) entity;
             applyUpdateableChanges(updateable, true);
-        }        
+        }
         em.persist(entity);
         return entity;
     }
@@ -90,7 +90,7 @@ public abstract class AbstractController<T> {
         if (Updateable.class.isAssignableFrom(entity.getClass())) {
             Updateable updateable = (Updateable) entity;
             applyUpdateableChanges(updateable, false);
-        }        
+        }
         return em.merge(entity);
     }
 
@@ -101,6 +101,11 @@ public abstract class AbstractController<T> {
         em.remove(attach(entity));
     }
 
+    @Lock(LockType.READ)
+    public T find(Object id) {
+        return em.find(entityClass, id);
+    }
+
     @Lock(LockType.READ)
     public List<T> findAll() {
         return findAll(new ArrayList<>());

account/src/main/java/de/muehlencord/shared/account/business/account/control/AccountControl.java

@@ -33,7 +33,11 @@ import java.util.Date;
 import java.util.List;
 import java.util.stream.Collectors;
 import javax.ejb.EJB;
+import javax.ejb.Lock;
+import javax.ejb.LockType;
 import javax.ejb.Stateless;
+import javax.ejb.TransactionAttribute;
+import javax.ejb.TransactionAttributeType;
 import javax.inject.Inject;
 import javax.persistence.EntityManager;
 import javax.persistence.NoResultException;
@@ -106,6 +110,8 @@ public class AccountControl implements Serializable {
     }
 
 
+    @Lock(LockType.READ)
+    @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED)
     public AccountEntity getAccountEntity(String userName, boolean loadRoles) {
         StringBuilder queryBuilder = new StringBuilder();
         queryBuilder.append("SELECT a FROM AccountEntity a ");