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Re: pqlib large object error

From: Edward Amsden <amsden_linux(at)embarqmail(dot)com>
To: pgsql-interfaces(at)postgresql(dot)org
Subject: Re: pqlib large object error
Date: 2008-06-10 21:16:08
Message-ID: 1213132568.15557.7.camel@dad-desktop2 (view raw, whole thread or download thread mbox)
Lists: pgsql-interfaces
On Tue, 2008-06-10 at 17:06 -0400, Tom Lane wrote:
> Edward Amsden <amsden_linux(at)embarqmail(dot)com> writes:
> > I am using the following code to create the large object:
> > 		lo_1 =  lo_creat(connect1, INV_READ|INV_WRITE);
> > 		if (lo_1 > 0) {
> > 			... (open and write)
> > 		} else {
> > 			fprintf (stderr, "Unable to create large object: %s\n", PQerrorMessage(connect1));
> > 		}
> BTW, what type do you have lo_1 declared as?  It strikes me that if it's
> signed int32, and your OID counter is past 2 billion, this code would
> fail because it would misinterpret a valid OID as negative.  The printf
> would then report whatever the last error on the connection had been.
> This still wouldn't explain why you're getting the duplicate-key error,
> but it might at least point to the proper place to look.
It is defined as the Oid type from pqlib-fs.h
> 			regards, tom lane

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