#1212 - ENH: Add query findSingleAttribute()

src/main/java/io/ebeaninternal/server/querydefn/DefaultOrmQuery.java

@@ -1284,6 +1284,12 @@ public class DefaultOrmQuery<T> implements SpiQuery<T> {
     return (List<A>) server.findSingleAttributeList(this, null);
   }
 
+  @Override
+  public <A> A findSingleAttribute() {
+    List<A> list = findSingleAttributeList();
+    return !list.isEmpty() ? list.get(0) : null;
+  }
+
   @Override
   public T findOne() {
     return server.findOne(this, null);