Tehnici avansate de programare - Profs.info.uaic.ro

Persistenţa relaţiilor
Or<strong>de</strong>r 1 --- 0..∗ Or<strong>de</strong>rItem
Salvarea, citirea, ştergere relaţiilor:
Individual
Or<strong>de</strong>r or<strong>de</strong>r = new Or<strong>de</strong>r();
Or<strong>de</strong>rItem item = new Or<strong>de</strong>rItem(...);
or<strong>de</strong>r.addItem(item); ...
mappingLayer.save(or<strong>de</strong>r);
item.setOr<strong>de</strong>rId(or<strong>de</strong>r.getId());
mappingLayer.save(item);
Cascadă
mappingLayer.save(or<strong>de</strong>r);
...
Or<strong>de</strong>r or<strong>de</strong>r = mappingLayer.retrieve(id);
Tehnologii <strong>avansate</strong> <strong>de</strong> <strong>programare</strong> – p.34/7