In my Lift app based on the JPA demo I tried this, which should work
beautifully according to everything I've been able to get my hands on:
@Temporal(TemporalType.TIMESTAMP)
@Column{val name="CREATED_AT", val updatable = false,
val insertable = false}
@org.hibernate.annotations.Generated(org.hibernate.annotations.GenerationTime.INSERT)
var createdAt : Date = new Date()
@Temporal(TemporalType.TIMESTAMP)
@Column{val name="UPDATED_AT", val updatable = false,
val insertable = false}
@org.hibernate.annotations.Generated(org.hibernate.annotations.GenerationTime.ALWAYS)
var updatedAt : Date = new Date()
This should, if I'm right, set an immutable created_at timestamp and a
mutable updated_at timestamp upon insert, and update the updated_at
timestamp upon each update.
What it actually does is leave both fields null. What a drag.
Any ideas? Is this a Scala thing? Am I missing something really obvious,
as usual?
Thanks,
Chas.
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