Re: Querying oaf of the interfaces a component implements ?

[Elliot Lee <sopwith redhat com>]

On Thu, 19 Oct 2000 rodrigo linuxave net wrote:

> ok, here's how I've done it. As I don't understand very well the race condition you
> talk about, please tell me if what I'm trying would have any consequence:

The race condition is that the _active status can change in between when
you retrieve it and when you activate.

> First, I've got this function:
> 
> gboolean
> gda_corba_oafiid_is_active (const gchar *oafiid)
> {
>   OAF_ServerInfoList* servlist;
>   CORBA_Environment   ev;
>   gchar*              query;
> 
>   g_return_val_if_fail(oafiid != NULL, FALSE);
> 
>   query = g_strdup_printf("iid = '%s' AND _active = true", oafiid);
>   CORBA_exception_init(&ev);
>   servlist = oaf_query(query, NULL, &ev);
>   CORBA_exception_free(&ev);
>   g_free((gpointer) query);
> 
>   if (servlist)

This is broken - the pointer will not be null unless possible an exception
is raised. You need to check ev for an error, and servlist will not be
NULL if zero results are returned (servlist->_length will be zero).

-- Elliot
DEAR IRS, I know you got my unsubscribe request. please stop sending me
all this junk mail and asking me to work half the year for you.