public Object fetch(Object[] fields, Object identity)
throws ObjectNotFoundException, PersistenceException {
Object stamp = null;
try {
// Load all the fields of the object including one-one relations
// index 0 belongs to the identity
for (int i = 1; i < _sqlTypes.length; ++i)
fields[i - 1] = SQLTypes.getObject(_rs, i + 1, _sqlTypes[i]);
if (_rs.next()) _lastIdentity = SQLTypes.getObject(_rs, 1, _sqlTypes[0]);
else _lastIdentity = null;
} catch (SQLException except) {
throw new PersistenceException(Messages.format("persist.nested", except));
}
return stamp;
}
public Object nextIdentity(Object identity) throws PersistenceException {
try {
if (_lastIdentity == null) {
if (!_rs.next()) return null;
_lastIdentity = SQLTypes.getObject(_rs, 1, _sqlTypes[0]);
return new Complex(_lastIdentity);
}
while (_lastIdentity.equals(identity)) {
if (!_rs.next()) {
_lastIdentity = null;
return null;
}
_lastIdentity = SQLTypes.getObject(_rs, 1, _sqlTypes[0]);
}
return new Complex(_lastIdentity);
} catch (SQLException except) {
_lastIdentity = null;
throw new PersistenceException(Messages.format("persist.nested", except));
}
}