After trying out the JDBC4 driver in DBCP, I see that Connection.createArray(...) still just creates a big string under the covers. Is that the expected behavior? Am I doing it wrong?
On Thu, Mar 31, 2011 at 8:04 PM, bubba postgres
<bubba.postgres@gmail.com> wrote:
Hello!
In my current application I am sending a lot of data to/from the DB with JDBC, and specifically arrays of Double. (or even Double[][]).
Alas, my current implementation I converts everything into a string representation, which blows my memory out of the water and drops my transaction rate way way down while I spend most of my time working with a StringBuffer.
I note that there is this web page:
http://wiki.postgresql.org/wiki/JDBC-BinaryTransfer
Which makes me think I might be saved. Has anyone used Binary Transfer for Double[] (or other) array data?
Any pointers to some implementation would be great...
Right now I have my own implementation that extends java.sql.Array, and contains the string and a typeName and num.
Regards,
-JD