Hi. I'm a Hibernate newbie and have never used Hibernate 3.x or earlier versions. I downloaded Hiberrnate 4.1 and got it working with my PostgreSQL database. Now I need to implement a custom type to map to a column in my database that holds an array of integers.

I've found many example online, but none of them seem to work with Hibernate 4.1. That includes the examples here: http://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch06.html#types-custom -- they have compilation errors, so I'm stuck. Can anyone help?

Actually, I think I got this working, thanks to this post: http://alenovarini.wikidot.com/mapping-a-custom-type-in-hibernate

The main problem was that UserType.nullSafeGet() and UserType.nullSafeGet() now each require an additional parameter, SessionImplementor session.

A secondary problem was that method calls in the example I was following, such as BigDecimalType.INSTANCE.get(), now require two additional parameters, but I worked around that by not making such calls.