Re: [Treebase-devel] we may have to give up on PK auto-generation by postgres

[Vladimir G. <vla...@du...>]

On Jan 27, 2010, at 2:42 PM, Hilmar Lapp wrote:

> So does this mean that Hibernate assumes that no-one else is  
> touching the database while it is running.
> Does this then also mean that we cannot touch the database (such as  
> for inserting data) through any other means than the running  
> instance of Hibernate while such an Hibernate is running? I.e., a  
> Java program that also uses Hibernate but runs as a separate process  
> won't do either.

It's more like that the other program must respect the same convention  
for using hibernate_sequence that Hibernate in TB2 web front end uses.  
(I hope that a program on top of the TB2 DAO layer would respect it.)  
It is possible that the Hibernate convention is designed to allow for  
concurrent agents -- since it relies on transactional increments of  
hibernate_sequence.

> Is this a situation that we can live with, or does this need to be  
> remedied?

To have hope of meeting Feb 5, we have to live with it, I think.   
(Unless it also messes up data importing.)

--VG