Re: Inserting data a UDT in binary format using LIBPQ

FUNC_BINARY_FORMAT was similar to varlena struct and I thought
this is what you would get back from a detoasted argument in
recieve function but I guess it was a wrong assumption. I will
try StringInfo structure instead.

Thanks for the pointer.
Brijesh

> -----Original Message-----
> From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
> Sent: Tuesday, January 09, 2007 1:17 PM
> To: Brijesh Shrivastav
> Cc: pgsql-interfaces@postgresql.org
> Subject: Re: [INTERFACES] Inserting data a UDT in binary format using
> LIBPQ
>
>
> "Brijesh Shrivastav" <Bshrivastav@esri.com> writes:
> > Datum func_Recv(PG_FUNCTION_ARGS)
> > {
> >      FUNC_BINARY_FORMAT *input
> >         = (FUNC_BINARY_FORMAT
> *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
>
> Why would you expect that the input to a receive function would be
> already in the datatype's internal format?
>
> I'm too lazy to go check the code right now, but my
> recollection is that
> what you get is a reference to a StringInfo holding the data message
> received from the client.  You should probably not touch the
> StringInfo
> directly if you can avoid it, but use the convenience
> functions that are
> provided for receive functions to use.  Look at the code for existing
> receive functions for datatypes similar to yours.
>
>             regards, tom lane
>
>