public class ThemeException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    public ThemeException(final String message, final Throwable cause) {
        super(message, cause);
    }

    public ThemeException(final String message) {
        super(message);
    }

    private final transient VaMessenger<FessMessages> messageCode;

    public InvalidQueryException(final VaMessenger<FessMessages> messageCode, final String message, final Throwable cause) {
        super(message, cause);
        this.messageCode = messageCode;
    }

    public InvalidQueryException(final VaMessenger<FessMessages> messageCode, final String message) {
        super(message);

                    e = causes[causes.length - 1];
                }
            }

            String errorName;
            final Throwable cause = e.getCause();
            if (cause != null) {
                errorName = cause.getClass().getCanonicalName();
            } else {
                errorName = e.getClass().getCanonicalName();
            }

        return OptionalThing.of(asJson(createFailureBean(Status.BAD_REQUEST, createMessage(resource, cause))));
    }

    @Override
    public OptionalThing<ApiResponse> handleServerException(final ApiFailureResource resource, final Throwable cause) {
        return OptionalThing.of(asJson(createFailureBean(Status.SYSTEM_ERROR, createMessage(resource, cause))));
    }

public class QueryParseException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    public QueryParseException(final ParseException cause) {
        super(cause);
    }

public class DictionaryException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    public DictionaryException(final String message, final Throwable cause) {
        super(message, cause);
    }

    public DictionaryException(final String message) {
        super(message);
    }

public class ThumbnailGenerationException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    public ThumbnailGenerationException(final String message, final Exception cause) {
        super(message, cause);
    }

    public ThumbnailGenerationException(final String message) {
        super(message, false, false);
    }

                    crawlerStatsHelper.record(keyObj, StatsAction.ACCESS_EXCEPTION);
                    final Throwable cause = e.getCause();
                    if (cause instanceof ChildUrlsException) {
                        ((ChildUrlsException) cause).getChildUrlList().stream().map(RequestData::getUrl).forEach(s -> {
                            if (!processedUrls.contains(s) && !urlQueue.contains(s)) {

                cause = e;
            }
            if (cause instanceof OpenSearchStatusException) {
                final RestStatus status = ((OpenSearchStatusException) cause).status();
                switch (status) {
                case UNAUTHORIZED:
                    logger.warn("[{}] Unauthorized access: {}", i, SystemUtil.getSearchEngineHttpAddress(), cause);
                    break;

        final BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();
        for (final BooleanClause clause : booleanQuery.clauses()) {
            final QueryBuilder queryBuilder = getQueryProcessor().execute(context, clause.getQuery(), boost);
            if (queryBuilder != null) {
                switch (clause.getOccur()) {
                case MUST:
                    boolQuery.must(queryBuilder);
                    break;