Re: Help with NPE
От | M. A. Sridhar |
---|---|
Тема | Re: Help with NPE |
Дата | |
Msg-id | 20021114161408.59514.qmail@web40402.mail.yahoo.com обсуждение исходный текст |
Ответ на | Re: Help with NPE (Barry Lind <blind@xythos.com>) |
Список | pgsql-jdbc |
Thanks for your inputs, folks. I did find the problem in my code, and as David said, it was because of an attempt to use a closed connection. Thanks again. --- Barry Lind <blind@xythos.com> wrote: > I checked in a patch that produces a better error message when this > situation arises. > > --Barry > > > David Hooker wrote: > > This is because you tried to use a Connection that was closed. I agree > > that something other than a NPE should be thrown in this case. > > > > -----Original Message----- > > From: pgsql-jdbc-owner@postgresql.org > > [mailto:pgsql-jdbc-owner@postgresql.org] On Behalf Of M. A. Sridhar > > Sent: Sunday, November 10, 2002 8:56 PM > > To: pgsql-jdbc@postgresql.org > > Subject: [JDBC] Help with NPE > > > > > > Hello folks, > > > > I'm getting this NullPointerException from within the PostgreSQL JDBC > > driver, > > and I'm not sure what to make of it: > > > > java.lang.NullPointerException > > at > > org.postgresql.core.QueryExecutor.execute(QueryExecutor.java:62) > > at > > org.postgresql.jdbc1.AbstractJdbc1Connection.ExecSQL(AbstractJdbc1Connec > > tion.java:497) > > at > > org.postgresql.jdbc1.AbstractJdbc1Statement.execute(AbstractJdbc1Stateme > > nt.java:320) > > at > > org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Stateme > > nt.java:48) > > at > > org.postgresql.jdbc1.AbstractJdbc1Statement.executeQuery(AbstractJdbc1St > > atement.java:153) > > at > > zerocode.udm.PreparedStmtWithSql.executeQuery(PreparedStmtWithSql.java:1 > > 75) > > at > > zerocode.udm.DbObjectStore._retrieveWithOptSql(DbObjectStore.java:1562) > > .... > > > > This seems to happen not immediately at application startup, but some > > time > > thereafter. When I first connect to the database, everything is fine, > > but > > after I leave the app idle for a while and use it again, it crashes. > > This > > could well be because there is something in my code base that keeps an > > open > > connection around for a while, but I was hoping for a more informative > > message if that were the case (such as "connection expired") instead of > > an > > NPE. > > > > I would greatly appreciate any help on this one. > > > > Thanks. > > > > ===== > > ------ > > M. A. Sridhar > > m_a_sridhar@yahoo.com > > > > __________________________________________________ > > Do you Yahoo!? > > U2 on LAUNCH - Exclusive greatest hits videos > > http://launch.yahoo.com/u2 > > > > ---------------------------(end of broadcast)--------------------------- > > TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org > > > > > > ---------------------------(end of broadcast)--------------------------- > > TIP 2: you can get off all lists at once with the unregister command > > (send "unregister YourEmailAddressHere" to majordomo@postgresql.org) > > > > ===== ------ M. A. Sridhar m_a_sridhar@yahoo.com __________________________________________________ Do you Yahoo!? Yahoo! Web Hosting - Let the expert host your site http://webhosting.yahoo.com
В списке pgsql-jdbc по дате отправления: