/**
* Returns the number of books.
*
* @return the number of books
* @throws SystemException if a system exception occurred
*/
public int getBooksCount() throws SystemException {
return bookPersistence.countAll();
}
/**
* Returns the number of books.
*
* @return the number of books
* @throws SystemException if a system exception occurred
*/
public int getBooksCount() throws SystemException {
return bookPersistence.countAll();
}