It’s Only Software

This simple change in Spring 2.5.2 and above lets you remove boilerplate code that you have probably written for simple JDBC queries performed with the generics-aware SimpleJdbcTemplate (read my earlier 5 Minute Guide to… if you don’t know what this is). Change this:

new ParameterizedRowMapper<String>() {
                        @Override
                        public String mapRow(ResultSet rs, int rowNum) throws SQLException {
                                return rs.getString("State");
                        }
                }

Into this:

new ParameterizedSingleColumnRowMapper<String>()

The fully qualified class name is org.springframework.jdbc.core.simple.ParameterizedSingleColumnRowMapper. Neat! If you’re interested in where this came from, you can have a look at the JIRA issue SPR-4320.