Re: COPY support survey - Mailing list pgsql-jdbc
From | Dave Cramer |
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Subject | Re: COPY support survey |
Date | |
Msg-id | 926F22A7-1948-450A-824B-EED4D5185C61@fastcrypt.com Whole thread Raw |
In response to | COPY support survey (Kris Jurka <books@ejurka.com>) |
Responses |
Re: COPY support survey
|
List | pgsql-jdbc |
I would vote for 3.I already have ported your patch over to the (near) current code and it is being used by a few people and from what I understand quite stable. If you want I can fix this up and commit it. Dave On 19-Aug-05, at 3:03 AM, Kris Jurka wrote: > > On and off there's been discussions of getting COPY support into > the JDBC driver and I produced a patch to provide a stream based > interface over a year and a half ago [1]. At the time we did not > commit that because we had grand plans to provide a friendly > interface to users so they did not have to know the internals of > how COPY actually represents data. This mostly happened off-list > between Oliver and I, but the key suggestion is available here > [2]. This allows you to use SQLOutput [3] calls like > writeTimestamp or writeArray to directly send Java objects to the > database without having to know the Postgresql specific text > representation of them. This turned out to be harder and more > involved than it looked and I just let the patch languish, always > intending to return to it, but as time has passed I've actually had > less time to dedicate to the driver instead of more. > > I know a number of people are already/still using the original > patch I provided, but at the same time they have also (indirectly) > indicated that some additional support is needed [4]. > > So the question is what should we do? > > 1) Just get the raw stream interface into the official release and > let the end user deal with reading and writing the stream. That's > all I'll use and I don't care about anything else. > > 2) Don't give up, get the friendly SQLInput/SQLOutput interface in > because this is what I really want. > > 3) Put in the raw stream interface, but keep working to also add > the friendly one. I'll understand if the interface changes and I > have to modify my code a bit. > > Kris Jurka > > [1] http://archives.postgresql.org/pgsql-jdbc/2003-12/msg00186.php > [2] http://www.ejurka.com/pgsql/copy/doc/sqlinputoutput.txt > [3] http://java.sun.com/j2se/1.4.2/docs/api/java/sql/SQLOutput.html > [4] http://archives.postgresql.org/pgsql-jdbc/2004-06/msg00165.php > > ---------------------------(end of > broadcast)--------------------------- > TIP 9: In versions below 8.0, the planner will ignore your desire to > choose an index scan if your joining column's datatypes do not > match > >
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