Re: Is it possible to get the Payload from a NOTIFY via the JDBC Driver?
От | Edvin Syse |
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Тема | Re: Is it possible to get the Payload from a NOTIFY via the JDBC Driver? |
Дата | |
Msg-id | 6C37221E818AD94EB8593F2D10B7D62611A9B9@EX-2010-01.ad.sdhosting.no обсуждение исходный текст |
Ответ на | Re: Is it possible to get the Payload from a NOTIFY via the JDBC Driver? (Kris Jurka <books@ejurka.com>) |
Список | pgsql-jdbc |
> This works with 9.0 and newer server versions. The JDBC driver didn't > need any changes to make that happen, so the comment never got > updated. Sweet, thanks :) > > I'm also curious to know if there are any plans to implement async > > support for notifications. > > > > Meaning a callback mechanism or just not needing to issue queries to the > server? Currently the JDBC driver supports an intermediate method > depending on your connection type. You only need to poll > PGConnection.getNotifications, not issue server queries as long as you > aren't connected via SSL. The driver uses InputStream.available to > determine when a notification is pending which isn't supported on all > InputStreams. It would be nice to be able to attach a listener that gets notifications in realtime as they come over the wire, but if Iunderstand you correctly, I can atleast let a thread poll regularily, and it will not create any network traffic, right?Is there a way to attach a listener with today's architecture? -- Edvin
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