Re: data from the table is getting dropped when I am restarting my application after making changes in the objects created in my application in play

On 07/20/2012 05:54 PM, Roshan Saxena wrote:
> Yes it is connect and insertion and udation and deletion is taking
> place normally but the proble of table drop occurs when I make any
> changes in my models in play

Please reply to the mailing list (reply all) not to me directly.

If Play framework is issuing a DROP TABLE, then you need to ask for help
with the Play people. PostgreSQL has no way of knowing that you don't
want the DROP TABLE your framework asks for.

On Thu, Jul 19, 2012 at 9:25 AM, Craig Ringer <ringerc(at)ringerc(dot)id(dot)au
<mailto:ringerc(at)ringerc(dot)id(dot)au>> wrote:

On 07/19/2012 03:19 AM, rajonrole(at)gmail(dot)com
<mailto:rajonrole(at)gmail(dot)com> wrote:

I am creating one application using play in the models I had
created a table and everything is working fine except when i
make changes in any of the object(fields) all the previous data
in the database is getting dropped how to recover that

You're better off asking the Play! framework people.

If you want to investigate it from the database side, set
log_statement='all' in postgresql.conf, reload or restart
PostgreSQL, and run your test. Now examine the logs and trace what
the framework did. Check to see if:

- It ever connects to PostgreSQL at all. You might be using an
in-memory h2 or derby instance and just think you're using PostgreSQL

- It ever inserts any data

- It ever commits its transactions

If you confirm that it's getting its data into PostgreSQL, you then
need to look and see if it's deleting it again by checking the log
for DELETE and TRUNCATE statements.

It could also be re-creating your tables every time it runs. Check
for "CREATE TABLE" statements.

--
Craig Ringer