Re: [INTERFACES] libpq++ ---- PgDatabase instance problem

Sounds like you can just have a pointer to PgDatabase in your class
(private: PgDatabase* db_ptr;), and initialize that to the NULL
pointer. Later on you instantiate PgDatabase with "new".

--Yu Cao

On Fri, 20 Aug 1999, inkle c wrote:

> Well, this is where the problem comes because PgDatabase() is a
> protected constructor, myclass doesn't inherit from PgDatabase. In
> simple words:
> ==============================================
> class myclass {
>     public:
>            myclass();
>     private:
>            PgDatabase db;
> }
> 
> myclass::myclass():db(NULL){
> some-other-stuff-goes-here
> }; 
> ===============================================
> the above codes causes me trouble as I described 
> below, any ideas how to fix it? I also tried
> PgDatabase db as a global variable and init it to
> be NULL, but this causes the same problem.
> 
> Thanks.
> 
> inkle 
> 
> --- Patrick Welche <prlw1@newn.cam.ac.uk> wrote:
> > inkle c wrote:
> > > 
> > > Hi,
> > > 
> > > I am writing a small class which has a PgDatabase
> > > instance as its private member, and in the
> > constructor,
> > > I init it to be NULL (i.e.,
> > > myclass::myclass():PgDatabaseInstanceMember(NULL)
> > ), this causes a core
> > > dump, what's wrong with that?
> > 
> > I'm not too sure what you want, but how about
> > 
> > myclass::myclass():PgDatabase()
> > 
> > ?
> > 
> > Cheers,
> > 
> > Patrick
> > 
> 
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