Can you not simply:
(jdbc/with-connection db2
(jdbc/with-query-results results
query
{:result-type :forward-only
:fetch-size 1000}
(jdbc/with-connection db1
;; read and write?
)))
?
On Tue, Oct 9, 2012 at 2:53 PM, Brian Craft <craft.br...@gmail.com> wrote:
>
> On Tuesday, October 9, 2012 12:11:28 PM UTC-7, Tassilo Horn wrote:
>>
>> Brian Craft <craft...@gmail.com> writes:
>>
>> Hi Brian,
>>
>> > If (read-stuff) is not lazy, then this looks pretty simple: all the
>> > data is loaded in memory & returned to (write-stuff). If the data is
>> > large you wouldn't want it all in memory. What then? Could you make
>> > read-stuff return a lazy sequence? My impression after a brief
>> > experiment is that this doesn't work: when the inner with-connection*
>> > returns, the db connection is closed. A lazy sequence from
>> > (read-stuff) then can't be evaluated w/o throwing an error.
>>
>> Yes, that's true. Maybe Korma [1] is better suited for this kind of
>> operation.
>>
>
> Damn. I was hoping there was some lispy fp thing I was missing here, but
> *db* really is just a global variable that fails in the same way that
> globals fail in all languages.
>
> Thanks for the link to korma.
>
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