On 11/20/01 7:38 AM, "Nick Pomfret" <[EMAIL PROTECTED]> wrote:
> When performing a select (using a Criteria object) containing a join to a > table, if that has never been selected from before (in the Turbine app) I > get the following error: > > Exception: java.lang.NullPointerException: > Stack Trace follows: > java.lang.NullPointerException: > at > org.apache.turbine.util.db.Criteria.containsObjectColumn(Criteria.java:393) > at org.apache.turbine.om.peer.BasePeer.doSelect(BasePeer.java:1111) > > I've discovered through querying the databaseMap that the tableMap in > question does not exist. Is it true that a tableMap is loaded into a > databaseMap only when performing a select on its table (it seems so)? Yes, Torque has some odd initialization patterns which will be cleaned up to be more deterministic. Trying to find the source of initialization can be very, very confusing and looking at a sequence diagram leaves you scratching your head. Are you using Torque in 2.x or the decoupled Torque? Can you send me your datamodel and your code that is causing this? I will add it to the testbed and fix the problem. > If so > is there a way to configure turbine to load all the tableMaps in when it > starts up? Or is there another solution? They will load when the system starts up in a deterministic way. The system may take up a few more resources given that the lazy initialization will be removed but I believe it will make the code a lot easier to understand. With your discovery as a case in point I don't know of any common misconfiguration that might be causing the problem and I don't know what's going on until I see your code. John often has more insight into Criteria related behaviour as I haven't delved into that class in earnest because I would like to make the query model pluggable so queries can be made in terms of the object model and not the datamodel. > Nick > > > -- > To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> -- jvz. Jason van Zyl http://tambora.zenplex.org http://jakarta.apache.org/turbine http://jakarta.apache.org/velocity http://jakarta.apache.org/alexandria http://jakarta.apache.org/commons -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
