See below.
> DC>Caused by: org.exolab.castor.jdo.PersistenceException: Nested error:
> DC>java.lang.NullPointerException
> DC> at org.exolab.castor.persist.TransactionContext.create(Unknown
Source)
> DC> at org.exolab.castor.jdo.engine.DatabaseImpl.create(Unknown
Source)
> DC> at
com.xmlmodeling.portal.data.PortalUser.insert(PortalUser.java:41)
> DC>
> DC>The Java classes were generated from an XML Schema using Castor source
> DC>generator, so they are a bit verbose to copy relevant parts. Here is the
> DC>mapping.xml for the two classes involved in the inheritance. I'm
attempting to
> DC>insert the subclass, PortalUser.
>
> The NullPointerException stack trace says that PortalUser.java, line
> #41 is the problem. What's on that line? When debugging this type of
> exception, without the relevant code it's difficult to speculate.
>
That line simply calls "db.insert(this)", then the NPE occurs within
TransactionContext.create()
>
> What database are you using? The reason I ask is that there is a problem with
> either Oracle or the Oracle JDBC drivers and the way timestamps are handled.
> The trouble is with handling of the nanoseconds. This is what could cause the
> date fields to be off resulting in the ObjecModifiedException.
>
I'm using SQL Server. But your comment about dates prompts a thought that I
may be using java.util.Date in my Java apps and this is causing some difference
with the timestamp format in the database.
Thanks,
Dave
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