this.queryString = queryString.substring(ALLINURL_FIELD_PREFIX.length());
            } else if (queryString.startsWith(ALLINTITLE_FIELD_PREFIX)) {
                defaultField = ComponentUtil.getFessConfig().getIndexFieldTitle();
                this.queryString = queryString.substring(ALLINTITLE_FIELD_PREFIX.length());
            } else {
                this.queryString = queryString;
            }
        } else {

}

// Parses signature version '4' query string of the following form.
//
//	querystring = X-Amz-Algorithm=algorithm
//	querystring += &X-Amz-Credential= urlencode(accessKey + '/' + credential_scope)
//	querystring += &X-Amz-Date=date
//	querystring += &X-Amz-Expires=timeout interval
//	querystring += &X-Amz-SignedHeaders=signed_headers
//	querystring += &X-Amz-Signature=signature
//

    private final String fq;

    /**
     * Constructor for QueryLog.
     * @param queryString The query string.
     * @param filterQueryString The filter query string (can be null).
     */
    public QueryLog(final String queryString, @Nullable final String filterQueryString) {
        q = queryString;
        fq = filterQueryString;
    }

    /**
     * Returns the query string.

    protected Map<String, String[]> getParameterMapFromQueryString(final HttpServletRequest request, final String enc) throws IOException {
        final String queryString = request.getQueryString();
        if (StringUtil.isNotBlank(queryString)) {
            return parseQueryString(queryString, enc);
        }
        return Collections.emptyMap();
    }

    /**
     * Parses a query string and extracts parameter name-value pairs.

        final String urlField = fessConfig.getIndexFieldUrl();
        final String queryString = "*" + text + "*";
        context.addFieldLog(urlField, queryString);
        context.addHighlightedQuery(text);
        return QueryBuilders.wildcardQuery(urlField, queryString).boost(boost);
    }

    /**
     * Converts a term query ending with asterisk to a prefix query.
     *

        final String queryString = queryLog.getQueryString();
        final String filterQueryString = queryLog.getFilterQueryString();

        final List<String> tagList = new ArrayList<>();
        for (final String tagFieldName : tagFieldNames) {
            tagList.addAll(Arrays.asList(SuggestUtil.parseQuery(queryString, tagFieldName)));
            if (filterQueryString != null) {

    }

    /**
     * Deletes suggest items by a query string.
     * @param queryString The query string.
     * @return The SuggestDeleteResponse.
     */
    public SuggestDeleteResponse deleteByQuery(final String queryString) {
        return deleteByQuery(QueryBuilders.queryStringQuery(queryString).defaultOperator(Operator.AND));
    }

    /**
     * Deletes suggest items by a query builder.

// must be extracted from the header.
var userMetadataKeyPrefixes = []string{
	"x-amz-meta-",
	"x-minio-meta-",
}

// extractMetadataFromReq extracts metadata from HTTP header and HTTP queryString.
func extractMetadataFromReq(ctx context.Context, r *http.Request) (metadata map[string]string, err error) {
	return extractMetadata(ctx, textproto.MIMEHeader(r.Form), textproto.MIMEHeader(r.Header))
}

                }
                queryBuilder = boolQueryBuilder;
            }

            return queryBuilder;
        } catch (final IOException e) {
            throw new SuggesterException("Failed to create queryString.", e);
        }
    }

    /**
     * Builds a filter query.
     * @param fieldName The field name.
     * @param words The words to filter by.
     * @return The QueryBuilder instance.
     */