if (start == null) {
            start = ComponentUtil.getFessConfig().getPagingSearchPageStartAsInteger();
        }
        return start;
    }

    @Override
    public int getOffset() {
        if (offset == null) {
            offset = 0;
        }
        return offset;
    }

    @Override
    public int getPageSize() {

        if (start == null) {
            start = ComponentUtil.getFessConfig().getPagingSearchPageStartAsInteger();
        }
        return start;
    }

    @Override
    public int getOffset() {
        if (offset == null) {
            offset = 0;
        }
        return offset;
    }

    @Override
    public int getPageSize() {

     *
     * @return The page size.
     */
    public abstract int getPageSize();

    /**
     * Returns the offset.
     *
     * @return The offset.
     */
    public abstract int getOffset();

    /**
     * Returns the extra queries.
     *
     * @return The extra queries.
     */
    public abstract String[] getExtraQueries();

    /**
     * Returns the attribute.
     *