boolean isExpirationLifecycleConfigurationPresent(BucketLifecycleConfiguration lifecycleConfiguration) {
  return lifecycleConfiguration != null &&
      lifecycleConfiguration.getRules() != null &&
      lifecycleConfiguration.getRules().stream()
      .filter(r -> r.getExpirationInDays() == getConfiguredExpirationInDays())
      .filter(r -> {
        LifecycleFilterPredicate predicate = r.getFilter().getPredicate();
        if (predicate instanceof LifecycleTagPredicate) {
          LifecycleTagPredicate tagPredicate = (LifecycleTagPredicate) predicate;
          return DELETED_TAG.equals(tagPredicate.getTag());
        }
        return false;
      })
      .findAny().isPresent();
}
 

private boolean isDeletedTagPredicate(final LifecycleFilterPredicate filterPredicate, final String bucketPrefix) {
  if (filterPredicate instanceof LifecycleTagPredicate) {
    LifecycleTagPredicate tagPredicate = (LifecycleTagPredicate) filterPredicate;
    return S3BlobStore.DELETED_TAG.equals(tagPredicate.getTag());
  }
  else if (filterPredicate instanceof LifecycleAndOperator) {
    LifecycleAndOperator andOperator = (LifecycleAndOperator) filterPredicate;
    return
        andOperator.getOperands().stream().anyMatch(op -> isDeletedTagPredicate(op, bucketPrefix)) &&
        andOperator.getOperands().stream().anyMatch(op -> isBucketPrefixPredicate(op, bucketPrefix));
  }
  else {
    return false;
  }
}
 

private boolean isBucketPrefixPredicate(final LifecycleFilterPredicate filterPredicate, final String bucketPrefix) {
  if (filterPredicate instanceof LifecyclePrefixPredicate) {
    LifecyclePrefixPredicate prefixPredicate = (LifecyclePrefixPredicate) filterPredicate;
    return prefixPredicate.getPrefix().equals(bucketPrefix);
  }
  else {
    return false;
  }
}
 

@Override
protected void doStartElement(
    String uri,
    String name,
    String qName,
    Attributes attrs) {

    if (in("LifecycleConfiguration")) {
        if (name.equals("Rule")) {
            currentRule = new Rule();
        }
    } else if (in("LifecycleConfiguration", "Rule")) {
        if (name.equals("Transition")) {
            currentTransition = new Transition();
        } else if (name.equals("NoncurrentVersionTransition")) {
            currentNcvTransition = new NoncurrentVersionTransition();
        } else if (name.equals("AbortIncompleteMultipartUpload")) {
            abortIncompleteMultipartUpload = new
                AbortIncompleteMultipartUpload();
        } else if (name.equals("Filter")) {
            currentFilter = new LifecycleFilter();
        }
    } else if (in("LifecycleConfiguration", "Rule", "Filter")) {
        if (name.equals("And")) {
            andOperandsList = new ArrayList<LifecycleFilterPredicate>();
        }
    }
}