des enterprise beans - Département Informatique

Exemple du bean entité bank
}
}
throw new RemoteException("Impossible de trouver : " + key, e);
public java.util.Enumeration ejbFindAccountsLargerThan(float balance)
throws RemoteException, FinderException {
try {
Connection connection = getConnection();
PreparedStatement statement = connection.prepareStatement
("SELECT name FROM Savings_Account WHERE balance > ");
statement.setFloat(1, balance);
ResultSet resultSet = statement.executeQuery();
Vector keys = new Vector();
while(resultSet.next()) {
String name = resultSet.getString(1);
keys.addElement(new AccountPK(name));
}
statement.close();
connection.close();
return keys.elements();
} catch(SQLException 3) {
throw new RemoteException("Impossible findAccountsLargerThan : " +
balance, e);
}
}
public void ejbLoad() throws RemoteException {
// obtient le nom de la clé primaire
_name = (AccountPK) _context.getPrimaryKey()).name;
try {
Connection connection = getConnection();
PreparedStatement statement = connection.prepareStatement
("SELECT balance FROM Savings_Account WHERE name = ");
statement.setString(1, _name);
ResultSet resultSet = statement.executeQuery();
if(!resultSet.next()) {
throw new RemoteException("Compte introuvable : " + _name);
}
_balance = resultSet.getFloat(1);
statement.close();
connection.close();
} catch(SQLException e) {
throw new RemoteException("Impossible de charger : " + _name, e):
}
}
public void ejbStore() throw RemoteException {
try {
Connection connection = getConnection();
PreparedStatement statement = connection.prepareStatement
("UPDATE Savings_Accounts SET balance = WHERE name = ");
statement.setFloat(1, _balance);
statement.setString(2, _name);
statement.executeUpdate();
10-18 Guide du dé veloppeur Enterprise JavaBeans