Re: refreshRow is slow
От | Kris Jurka |
---|---|
Тема | Re: refreshRow is slow |
Дата | |
Msg-id | alpine.BSO.2.00.1012251718240.29778@leary.csoft.net обсуждение исходный текст |
Ответ на | Re: refreshRow is slow (Oliver Jowett <oliver@opencloud.com>) |
Список | pgsql-jdbc |
On Sat, 16 Jan 2010, Oliver Jowett wrote: > John T. Dow wrote: > >> Certainly that piece of code can be made more efficient. One query ought to >> be able to return all the primary keys. > > It's not the PKs it is after (it's already worked those out earlier), it's > the column names to select to populate the rest of the resultset. > > But yes, it could be more efficient. We'd need a static String[] > Field.getColumnNames(Connection,Field[]) method or similar. > I've adjusted the fetching of all of the ResultSetMetaData attributes to happen in one query for the entire ResultSet instead of one attribute of one column at a time. I've adjusted the updateable ResultSet code to use ResultSetMetaData to take advantage of this, so refreshRow should be much faster now. Kris Jurka
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