public class ValidatorUtils { private static final Map<Class<?>, List<ApacheValidator.ConstraintCacheItem>> constraintCache = new ConcurrentHashMap<>(); public static List<ApacheValidator.ConstraintCacheItem> getConstraints(Class<?> clazz) { if (!constraintCache.containsKey(clazz)) { synchronized (constraintCache) { if (!constraintCache.containsKey(clazz)) { List<ConstraintCacheItem> constraints = convertToConstraints(clazz); constraintCache.put(clazz, constraints); } } } return constraintCache.get(clazz); } private static List<ApacheValidator.ConstraintCacheItem> convertToConstraints(Class<?> clazz) { // perform conversion and return the constraints } } ValidatorFactory factory = Validation.byProvider(ApacheValidationProvider.class) .configure() .addProperty(ApacheValidatorConfiguration.Properties.FAIL_FAST, "true") .buildValidatorFactory(); ValidatorFactory factory = Validation.byProvider(ApacheValidationProvider.class) .configure() .addProperty(ApacheValidatorConfiguration.Properties.VALIDATION_PROVIDER_MODE, "method") .buildValidatorFactory();