Re: logging statements from hibernate to valid SQL

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От Andy Dale
Тема Re: logging statements from hibernate to valid SQL
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Msg-id faa313131002092352k49021fbak3ebe6ffb68021722@mail.gmail.com
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Ответ на logging statements from hibernate to valid SQL  (Willy-Bas Loos <willybas@gmail.com>)
Ответы Re: logging statements from hibernate to valid SQL  (Willy-Bas Loos <willybas@gmail.com>)
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Hi,

I would consider telling Hibernate to log the SQL it is generating to a file. This can be done by setting the logging category org.hibernate.SQL to debug, and for the parameters used in the prepared statements I think you must also enable org.hibernate.type on debug (I have not managed to get this working under JBoss though).

The produced output should look something like so:

2010-02-10 08:04:18,726 DEBUG [org.hibernate.SQL]
    /* named HQL query MessagingSession.findMessages */ select
        message0_.ID_ as col_0_0_
    from
        JBPM_MESSAGE message0_
    where
        message0_.DESTINATION_=?
        and message0_.ISSUSPENDED_<>true
        and (
            message0_.EXCEPTION_ is null
        )

Cheers,

Andy


On 9 February 2010 11:00, Willy-Bas Loos <willybas@gmail.com> wrote:
Hi,
I'm trying to log statements that are being fired from hibernate, so that i can benchmark them without hibernate itself.
I want to fire the SQL at the database directly and see what difference i can make by tweaking things.

But when i set log_statement = 'all', the logging looks like this:

2010-02-09 00:12:32 CET LOG:  execute <unnamed>: select nextval ('schema.sequence')
2010-02-09 00:12:32 CET LOG:  execute <unnamed>: insert into schema.tabe (field1, field2, field3, ...) values ($1, $2, $3, ...)
2010-02-09 00:12:32 CET DETAIL:  parameters: $1 = '1', $2 = NULL, $3 = '654767', ...)

Now, how can i get these $1 etc values to be replaced with their values, so that i can produce valid SQL?
Is there a postgresql.conf setting, or maybe some perl script that goes around?
(of course, it's more than just 3 lines.... I can't do it by hand.)

thx!

WBL

--
"Patriotism is the conviction that your country is superior to all others because you were born in it." -- George Bernard Shaw

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