Merge pull request #34 from benjaminknauer/patch-1

Instanciate ValidatorFactory only once

src/main/java/io/reflectoring/buckpal/common/SelfValidating.java

@@ -10,9 +10,9 @@ import java.util.Set;
 public abstract class SelfValidating<T> {
 
   private Validator validator;
+  private static ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
 
   public SelfValidating() {
-    ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
     validator = factory.getValidator();
   }