[Haskell-cafe] Re: HDBC converting a date sql value to UTCTime

2008-06-20 Thread George Moschovitis
Alternatively is there a way to create a UTCTime value from an epoch integer
(no of seconds since epoch).
I can't find a suitable constructor with Hoogle.

thank you in advance,
George.


On Thu, Jun 19, 2008 at 10:08 PM, George Moschovitis <
[EMAIL PROTECTED]> wrote:

> Hello,
>
> I am HDBC with the Postgres driver. I am trying to read a simple date
> column from the DB:
>
> stmt <- DB.prepare conn "SELECT date FROM my_table ORDER BY date DESC LIMIT
> 1"
> DB.execute stmt []
> DB.commit conn
> rows <- fetchAllRows' stmt
> let ((d:_):_) = rows
>
> the d variable is of type:
>
> SqlEpochTime 1213736400
>
> I am wondering how to convert this value to an UTCTime value.
>
> Any help appreciated (I am a newbie).
>
> -g.
>
>
>
> --
> http://gmosx.me.gr
> http://joy.gr
> http://cull.gr
> http://nitroproject.org
> http://phidz.com
> http://joyerz.com




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[Haskell-cafe] HDBC converting a date sql value to UTCTime

2008-06-19 Thread George Moschovitis
Hello,

I am HDBC with the Postgres driver. I am trying to read a simple date column
from the DB:

stmt <- DB.prepare conn "SELECT date FROM my_table ORDER BY date DESC LIMIT
1"
DB.execute stmt []
DB.commit conn
rows <- fetchAllRows' stmt
let ((d:_):_) = rows

the d variable is of type:

SqlEpochTime 1213736400

I am wondering how to convert this value to an UTCTime value.

Any help appreciated (I am a newbie).

-g.



-- 
http://gmosx.me.gr
http://joy.gr
http://cull.gr
http://nitroproject.org
http://phidz.com
http://joyerz.com
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[Haskell-cafe] Haskell FCGI server.

2007-08-03 Thread George Moschovitis
Dear devs,

is it possible to create a FCGI server that listens to a specific port using
the Haskell FCGI library?
The front end web server would then communicate with this back end FCGI
server through this port.
A small example would be really appreciated.

thanks,
George.

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Re: [Haskell-cafe] HDBC or HSQL

2007-07-26 Thread George Moschovitis


Ok, I am evaluating HDBC. I wrote a simple test program:
...
Can I get a more specific error? Is there a way to inspect this exception
more deeply?



handleSqlError does the trick, for other newbies:

main =
 handleSqlError $
 do
   dbc <- connectPostgreSQL "dbname=test user=postgres password=,psql51e"
   putStrLn "done"

Everything works ok now, I cann access my psql database and run basic sql
queries/updates.

-g.

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Fwd: [Haskell-cafe] HDBC or HSQL

2007-07-25 Thread George Moschovitis

Ok, I am evaluating HDBC. I wrote a simple test program:

import Database.HDBC
import Database.HDBC.PostgreSQL

main = do
 db <- connectPostgreSQL "dbname=Test user=postgres password='mypass'"
 putStrLn "done"

when I run it I get the following error:

db: exception :: Database.HDBC.SqlError

Can I get a more specific error? Is there a way to inspect this exception
more deeply?

thanks,
-g.

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[Haskell-cafe] HDBC or HSQL

2007-07-25 Thread George Moschovitis

Dear devs,

I am a Haskell newbie and I would like to hear your suggestions regarding a
Database conectivity library:

HSQL or HDBC ?

which one is better / more actively supported?

thanks in advance,
-g.

--
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http://blog.gmosx.com
http://cull.gr
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