Oliver Jowett <oliver@opencloud.com> writes:
> However the most likely cause is that the array code just does not
> understand the OID type -- there is this code in getArrayImpl when an
> unsupported array element type is encountered:
Another problem is that oidvector is not the same as oid[] --- for what
are now entirely historical reasons, they have different external
representations, which is certainly going to confuse any client-side
code trying to parse the data. You'd really need some single-purpose
code in the driver to handle oidvector at all.
In very recent PG releases, you could cast oidvector to oid[] (or maybe
better int8[]) in your query, but unless the JDBC array code copes with
nondefault subscripts, it'll still have trouble:
regression=# select '1 2 3'::oidvector::int8[];
int8
---------------
[0:2]={1,2,3}
(1 row)
regression=#
regards, tom lane