this.pathPrefix = pathPrefix;
    }

    /**
     * Gets the format type for the request.
     * @param request The HTTP servlet request.
     * @return The format type.
     */
    protected FormatType getFormatType(final HttpServletRequest request) {
        FormatType formatType = (FormatType) request.getAttribute(API_FORMAT_TYPE);
        if (formatType != null) {
            return formatType;
        }

    }

    @Override
    public void process(final HttpServletRequest request, final HttpServletResponse response, final FilterChain chain)
            throws IOException, ServletException {
        switch (getFormatType(request)) {
        case SEARCH:
            processSearchRequest(request, response, chain);
            break;
        case LABEL:
            processLabelRequest(request, response, chain);
            break;