Question

Is it possible to check a ResultSet to see if it contains a column label for the current row. I would assume that it is backed by some kind of Map, so providing an rs.contains(“label”) method can’t be that expensive, but I can’t find one in the javadoc.

The current way I’m testing for the presence of a label is:

BigDecimal bid;
    try {
        bid = rs.getBigDecimal("bid");
    }
    catch(final SQLException e) {
        bid = null;
    }

But this seems untidy to me, and will be unreadable if you want to test multiple rows in this manner.

Answer 1

You can use metadata that you can obtain from resultset. Use rs.getMetaData(), and then on metadata there are getColumnName() and getColumnLabel() methods.