How to use

FingerprintableBaseEntity

in

org.lwapp.hibernate.persistence.common

private static void updateFingerPrint(final AbstractEntity entity) {
  if (entity.getClass().isAnnotationPresent(Fingerprintable.class)) {
    ((FingerprintableBaseEntity) entity).setFingerPrint(((FingerprintableBaseEntity) entity).generateFingerPrint());
  }
}

private StringBuilder getFingerPrintableString() {
  final StringBuilder sb = new StringBuilder();
  for (final String value : getSortedFingerprintableValues()) {
    if (value != null) {
      sb.append(value);
    }
  }
  return sb;
}

private List<String> getSortedFingerprintableValues() {
  final List<String> fingerPrintableValues = new ArrayList<>();
  fingerPrintableValues.add(String.valueOf(getId()));
  fingerPrintableValues.add(String.valueOf(fingerPrintVersion));
  fingerPrintableValues.add(getFingerprintKey());
  for (final Object value : getFingerprintableValues()) {
    if (value != null) {
      final String formattedValue;
      if (value instanceof Date) {
        formattedValue = DateFormatUtils.ISO_DATETIME_TIME_ZONE_FORMAT.format((Date) value);
      } else {
        formattedValue = String.valueOf(value);
      }
      fingerPrintableValues.add(formattedValue);
    }
  }
  // Sort the values to avoid unnecessary ordering issues while
  // calculating the hash.
  Collections.sort(fingerPrintableValues);
  return Collections.unmodifiableList(fingerPrintableValues);
}

protected void validateFingerPrint(final T entity) {
  if ((entity != null) && entity.getClass().isAnnotationPresent(Fingerprintable.class)) {
    final FingerprintableBaseEntity fe = (FingerprintableBaseEntity) entity;
    if (!fe.generateFingerPrint().equals(fe.getFingerPrint())) {
      throw new InvalidFingerPrintException(
          "Fingerprint mismatch for the given id:" + entity.getId() + ". Make sure the fingerprint value is not altered outside of the application.");
    }
  }
}

final String generateFingerPrint() {
  final StringBuilder sb = getFingerPrintableString();
  return DigestUtils.sha512Hex(sb.toString());
}

private String getFingerprintKey() {
  return String.valueOf(Math.abs(String.valueOf(getId()).hashCode()));
}

@SuppressWarnings("unchecked")
private List<Object> getFingerprintableValues() {
  final List<Object> fieldValues = new ArrayList<>();
  try {
    final Set<Field> fields = ReflectionUtils.getFields(getClass());
    for (final Field field : fields) {
      field.setAccessible(true);
      final Object value = field.get(this);
      if ((value != null) && !isAnnotationPresent(field, IgnoreFingerprint.class, Version.class, Transient.class)) {
        fieldValues.add(value);
      }
    }
    return fieldValues;
  } catch (final Exception e) {
    throw new RuntimeException(e);
  }
}

private List<String> getSortedFingerprintableValues() {
  final List<String> fingerPrintableValues = new ArrayList<>();
  fingerPrintableValues.add(String.valueOf(getId()));
  fingerPrintableValues.add(String.valueOf(fingerPrintVersion));
  fingerPrintableValues.add(getFingerprintKey());
  for (final Object value : getFingerprintableValues()) {
    if (value != null) {
      final String formattedValue;
      if (value instanceof Date) {
        formattedValue = DateFormatUtils.ISO_DATETIME_TIME_ZONE_FORMAT.format((Date) value);
      } else {
        formattedValue = String.valueOf(value);
      }
      fingerPrintableValues.add(formattedValue);
    }
  }
  // Sort the values to avoid unnecessary ordering issues while
  // calculating the hash.
  Collections.sort(fingerPrintableValues);
  return Collections.unmodifiableList(fingerPrintableValues);
}

protected void validateFingerPrint(final T entity) {
  if ((entity != null) && entity.getClass().isAnnotationPresent(Fingerprintable.class)) {
    final FingerprintableBaseEntity fe = (FingerprintableBaseEntity) entity;
    if (!fe.generateFingerPrint().equals(fe.getFingerPrint())) {
      throw new InvalidFingerPrintException(
          "Fingerprint mismatch for the given id:" + entity.getId() + ". Make sure the fingerprint value is not altered outside of the application.");
    }
  }
}

final String generateFingerPrint() {
  final StringBuilder sb = getFingerPrintableString();
  return DigestUtils.sha512Hex(sb.toString());
}

private String getFingerprintKey() {
  return String.valueOf(Math.abs(String.valueOf(getId()).hashCode()));
}

@SuppressWarnings("unchecked")
private List<Object> getFingerprintableValues() {
  final List<Object> fieldValues = new ArrayList<>();
  try {
    final Set<Field> fields = ReflectionUtils.getFields(getClass());
    for (final Field field : fields) {
      field.setAccessible(true);
      final Object value = field.get(this);
      if ((value != null) && !isAnnotationPresent(field, IgnoreFingerprint.class, Version.class, Transient.class)) {
        fieldValues.add(value);
      }
    }
    return fieldValues;
  } catch (final Exception e) {
    throw new RuntimeException(e);
  }
}

private static void updateFingerPrint(final AbstractEntity entity) {
  if (entity.getClass().isAnnotationPresent(Fingerprintable.class)) {
    ((FingerprintableBaseEntity) entity).setFingerPrint(((FingerprintableBaseEntity) entity).generateFingerPrint());
  }
}

protected void validateFingerPrint(final T entity) {
  if ((entity != null) && entity.getClass().isAnnotationPresent(Fingerprintable.class)) {
    final FingerprintableBaseEntity fe = (FingerprintableBaseEntity) entity;
    if (!fe.generateFingerPrint().equals(fe.getFingerPrint())) {
      throw new InvalidFingerPrintException(
          "Fingerprint mismatch for the given id:" + entity.getId() + ". Make sure the fingerprint value is not altered outside of the application.");
    }
  }
}

private StringBuilder getFingerPrintableString() {
  final StringBuilder sb = new StringBuilder();
  for (final String value : getSortedFingerprintableValues()) {
    if (value != null) {
      sb.append(value);
    }
  }
  return sb;
}

private static void updateFingerPrint(final AbstractEntity entity) {
  if (entity.getClass().isAnnotationPresent(Fingerprintable.class)) {
    ((FingerprintableBaseEntity) entity).setFingerPrint(((FingerprintableBaseEntity) entity).generateFingerPrint());
  }
}

protected void validateFingerPrint(final T entity) {
  if ((entity != null) && entity.getClass().isAnnotationPresent(Fingerprintable.class)) {
    final FingerprintableBaseEntity fe = (FingerprintableBaseEntity) entity;
    if (!fe.generateFingerPrint().equals(fe.getFingerPrint())) {
      throw new InvalidFingerPrintException(
          "Fingerprint mismatch for the given id:" + entity.getId() + ". Make sure the fingerprint value is not altered outside of the application.");
    }
  }
}

private static void updateFingerPrint(final AbstractEntity entity) {
  if (entity.getClass().isAnnotationPresent(Fingerprintable.class)) {
    ((FingerprintableBaseEntity) entity).setFingerPrint(((FingerprintableBaseEntity) entity).generateFingerPrint());
  }
}