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1. Hibernate unable to instantiate default tuplizer - cannot find getter

I'm trying to use Hibernate to persist a class that looks like this:

public class Item implements Serializable, Comparable<Item> {

// Item id
private Integer id;

// Description of item in inventory
private String description;

// Number ...

2. No Default Constructor and Getters / Setters using Memento?

This is why I'm researching the possibility to apply Memento here. The model I'm thinking about is something like: - Memento holds state of Entity object. Memento is written according to Hibernate rules (default constructor, getters and setters). - Entity class have constructor with Memento parameter and is able to instantiate itself from Memento. - DAO loads Memento from database using ...