Magical MySQL URL parameters Save my Groovy Code

I've been working with legacy databases in MySQL and basically forbidden from using hibernate by a bug I had with all zero dates of the format '0000-00-00' which is perfectly legal in MySQL but completely disallowed in JDBC.
Stack trace for this problem contains:

SQL Exception: Value '0000-00-00' can not be represented as java.sql.Date 

The answer? Apparently there is a hidden setting to use...

dataSource {
  driverClassName = "com.mysql.jdbc.Driver"
  dialect= org.hibernate.dialect.MySQLMyISAMDialect
  url = "jdbc:mysql://localhost:3306/legacy?zeroDateTimeBehavior=convertToNull"
  username = "legacyUser"
  password = "legacyPassword"
 }

That little flag on the URL is absolutely magical and now I can map my Grails objects onto a legacy database. Isn't life grand?