On Wed, 2002-05-15 at 20:06, Simon Stewart wrote:
> I have a simple EJB that has three fields ("ID", a "key" and a "value")
> Key is a string, and value is given as being of class
> java.io.Serializable, so this class represents a basic key/value pair.
> Data appears to be serialized to the database okay (Postgres 7.2.1,
> column type BYTEA) but as a byte array. (I'll paste it below so someone
> can correct me when they want to)
>
> On deserializing the data, I get ClassCastErrors. The class being
> recovered from the DB is "[B" according to the exception being thrown,
> and that's just plain wrong. Anyone else seen this or got any ideas? A
>
> deserializedObject.getClass().getName()
>
> also returns "[B". More poking about reveals that this is a byte array.
> Is it a quirk of my JDBC driver that this happens, or is this something
> to do with JBoss' handling of serialzied objects in EJBs? I can post
> code, should people need it.
>
> Currently using Postgres 7.2.1, JDK 1.4 (from Sun), JBoss 3RC2, the
> usual suspects :)
I'm starting to suspect that JBoss might be the culprit here. If I
manually extract an object from the byte array, it turns out to be a
java.rmi.MarshalledObject when the expected class was java.lang.String.
Can anyone shed some light on this? I'm using CMP 2, if that helps.
Regards,
Simon
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