* @return The page size.
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

    /**
     * Sets the page size for pagination.
     * @param pageSize The page size.
     */
    public void setPageSize(final int pageSize) {
        this.pageSize = pageSize;
    }

    /**

     *
     * @return the page size
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

    /**
     * Sets the number of records per page.
     *
     * @param pageSize the page size
     */
    public void setPageSize(final int pageSize) {
        this.pageSize = pageSize;
    }

     *
     * @return the page size
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

    /**
     * Sets the number of records per page.
     *
     * @param pageSize the page size
     */
    public void setPageSize(final int pageSize) {
        this.pageSize = pageSize;
    }

     *
     * @return The page size.
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

    /**
     * Sets the page size.
     *
     * @param pageSize The page size.
     */
    public void setPageSize(final int pageSize) {
        this.pageSize = pageSize;
    }

    /**

     *
     * @return the page size
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

    /**
     * Sets the number of records to display per page.
     *
     * @param pageSize the page size to set
     */
    public void setPageSize(final int pageSize) {
        this.pageSize = pageSize;
    }

     * Gets the page size.
     * @return The page size.
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

    /**
     * Sets the page size.
     * @param pageSize The page size.
     */
    public void setPageSize(final int pageSize) {
        this.pageSize = pageSize;
    }

    /**

     * Gets the page size.
     * @return The page size.
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

    /**
     * Sets the page size.
     * @param pageSize The page size.
     */
    public void setPageSize(final int pageSize) {
        this.pageSize = pageSize;
    }

    /**

     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

    /**
     * Sets the number of records to display per page.
     *
     * @param pageSize the number of records per page to set
     */
    public void setPageSize(final int pageSize) {
        this.pageSize = pageSize;

            throw new UnsupportedOperationException("getOffset() is not supported in this implementation");
        }

        @Override
        public int getPageSize() {
            throw new UnsupportedOperationException("getPageSize() is not supported in this implementation");
        }

        @Override
        public String[] getExtraQueries() {

        @Override
        protected SearchResult search(String query, SearchRequestParams params, OptionalThing<FessUserBean> userBean) {
            int start = params.getStartPosition();
            int size = params.getPageSize();
            SearchResultBuilder builder = SearchResult.create();
            for (int i = start; i < start + size && i < allRecordCount; i++) {
                Map<String, Object> doc = new HashMap<>();