PreparedStatement with Statement.RETURN_GENERATED_KEYS

Question

The only way that some JDBC drivers to return Statement.RETURN_GENERATED_KEYS is to do something of the following:

long key = -1L;
Statement statement = connection.createStatement();
statement.executeUpdate(YOUR_SQL_HERE, Statement.RETURN_GENERATED_KEYS);
ResultSet rs = statement.getGeneratedKeys();
if (rs != null && rs.next()) {
    key = rs.getLong(1);
}

Is there a way to do the same with PreparedStatement?

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Edit

The reason I asked if I can do the same with PreparedStatement consider the following scenario:

private static final String SQL_CREATE = 
            "INSERT INTO
            USER(FIRST_NAME, MIDDLE_NAME, LAST_NAME, EMAIL_ADDRESS, DOB) 
            VALUES (?, ?, ?, ?, ?)";

In the USER table there's a PRIMARY KEY (USER_ID) which is a BIGINT AUTOINCREMENT (hence why you don't see it in the SQL_CREATE String.

Now, I populate the ? using PreparedStatement.setXXXX(index, value). I want to return ResultSet rs = PreparedStatement.getGeneratedKeys(). How can I achieve this?

Answer 1

You can either use the prepareStatement method taking an additional int parameter

PreparedStatement ps = con.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)

For some JDBC drivers (for example, Oracle) you have to explicitly list the column names or indices of the generated keys:

PreparedStatement ps = con.prepareStatement(sql, new String[]{"USER_ID"})

Answer 2

You mean something like this?

long key = -1L;

PreparedStatement preparedStatement = connection.prepareStatement(YOUR_SQL_HERE, PreparedStatement.RETURN_GENERATED_KEYS);
preparedStatement.setXXX(index, VALUE);
preparedStatement.executeUpdate();

ResultSet rs = preparedStatement.getGeneratedKeys();

if (rs.next()) {
    key = rs.getLong(1);
}

Answer 3

Not having a compiler by me right now, I'll answer by asking a question:

Have you tried this? Does it work?

long key = -1L;
PreparedStatement statement = connection.prepareStatement();
statement.executeUpdate(YOUR_SQL_HERE, PreparedStatement.RETURN_GENERATED_KEYS);
ResultSet rs = statement.getGeneratedKeys();
if (rs != null && rs.next()) {
    key = rs.getLong(1);
}

Disclaimer: Obviously, I haven't compiled this, but you get the idea.

PreparedStatement is a subinterface of Statement, so I don't see a reason why this wouldn't work, unless some JDBC drivers are buggy.