Hi,

table employee (id int, departmentno int, employeeno varchar)

id is automatically generated by the DB server, I want employeeno consists of department no and id, i.e.

id 123
departmentno 777

the employeeno supposed is 777123

when I add new employee, and before I write the data into table, how can I generate the employeeno?

I am using Hibernate 3.0, struts 1.2.7, J2SDK 1.4.2, PostgreSQL 8.0

Thanks

1. You can define a preInsert Event something like


The xx.yyy.zzz class will then implement the PreInsertEventListener. Look up Events and Intereceptors in the manual.

2. Im not sure if you can do this. But when you define the property, you can use the formulat attribute of this to do something like

Im not sure if it would work but you can check out the semantics of formula to see if this is doable.

Hi Rajasaur,

Thanks, I will try and see what will happen.