@Override
	public String toString() {
		return "BookEntity ["
				+ (id != null ? "id=" + id + ", " : "")
				+ (title != null ? "title=" + title + ", " : "")
				+ (author != null ? "author=" + author + ", " : "")
				+ (numberPage != null ? "numberPage=" + numberPage + ", " : "")
				+ (imprintDate != null ? "imprintDate=" + imprintDate + ", "
						: "") + (price != null ? "price=" + price + ", " : "")
				+ (rating != null ? "rating=" + rating + ", " : "")
				+ (discounts != null ? "discounts=" + discounts + ", " : "")
				+ (status != null ? "status=" + status : "") + "]";
	}