Last update timestamp with JPA

Question

I\'m playing around a bit with JPA(Eclipselink to be specific). The below entity have a timestamp that\'s supposed to reflect whenever that entity was last updated.

Answer 1

if you are using mysql, I think you can do the following to disable the timestamps from being updated from entity

@Column(name = "lastUpdate", updatable= false, insertable=false)
@Temporal(TemporalType.TIMESTAMP)
private Date lastUpdate;

for oracle you time have to set the timestamps from the entity using @PreUpdate annotation as explained above.