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December 28, 2019 19:53
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Validating entity manually, accepts entityManager and the entity to validate as parameters
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| public static <T> String validateEntity(final EntityManager entityManager, T obj){ | |
| Validator validator = new HibernateValidator().buildValidatorFactory(new ConfigurationState() { | |
| @Override | |
| public boolean isIgnoreXmlConfiguration() { | |
| return true; | |
| } | |
| @Override | |
| public MessageInterpolator getMessageInterpolator() { | |
| return new ResourceBundleMessageInterpolator(); | |
| } | |
| @Override | |
| public Set<InputStream> getMappingStreams() { | |
| return new HashSet<>(); | |
| } | |
| @Override | |
| public ConstraintValidatorFactory getConstraintValidatorFactory() { | |
| return new ConstraintValidatorFactoryImpl(); | |
| } | |
| @Override | |
| public TraversableResolver getTraversableResolver() { | |
| return new EntityManagerJpaTraversable(entityManager); | |
| } | |
| @Override | |
| public ParameterNameProvider getParameterNameProvider() { | |
| return null; | |
| } | |
| @Override | |
| public Map<String, String> getProperties() { | |
| return new HashMap<>(); | |
| } | |
| }).getValidator(); | |
| Set<ConstraintViolation<T>> constraintViolations = validator.validate(obj); | |
| if (constraintViolations.size() > 0) { | |
| Set<String> violationMessages = new HashSet<>(); | |
| for (ConstraintViolation<T> constraintViolation : constraintViolations) { | |
| violationMessages.add(constraintViolation.getPropertyPath() + ": " + constraintViolation.getMessage()); | |
| } | |
| return obj.getClass().getSimpleName() + " is not valid: \n " + violationMessages.toString() + " \n "; | |
| } | |
| return null; | |
| } |
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