RE: how to confirm the context has been initialized .

From: Stephane Faroult <sfaroult_at_oriolecorp.com>
Date: Wed, 26 Mar 2003 00:18:37 -0800
Message-ID: <F001.00572D5F.20030326001837@fatcity.com>

>----- ------- Original Message ------- -----
>From: "liujd" <liujd_at_cti.ac.cn>
>To: Multiple recipients of list ORACLE-L
><ORACLE-L_at_fatcity.com>
>Sent: Tue, 25 Mar 2003 22:53:44
>
>i write two function .
>one is login function as login(char * password,int
>contextId).this
>function initialize the context environment .and
>login database.
>two is getGroupInfo(char * groupName,int
>contextId); this function is as
>his name to get one group information.And refer to
>ctx[contextId] in the
>login function initial
>the sql_context variable is declared in the *.h as
>following
>EXEC SQL BEGIN DECLARE SECTION;
> sql_context ctx[20];
>EXEC SQL END DECLARE SECTION;
>Now ,my question is in the function two(
>getGroupInfo() ) ,how to judge
>the ctx[contextId] has been initialized before used
>it?
>
>thanks in advance!
>

static char global_init = 0;

             /* Initialized at compile-time */

login(..)
{
 /* do stuff */
 global_init = 1;
}

getGroupInfo()
{
 if (!global_init)

    {

     fprintf(stderr, "Not logged on, get lost\n");
     exit(1);

    }
 /* Now you're safe */
}

And reset global_init to 0 in the logoff function.

Regards,

Stephane Faroult
Oriole

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-- 
Author: Stephane Faroult
  INET: sfaroult_at_oriolecorp.com

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Received on Wed Mar 26 2003 - 02:18:37 CST