Hi Denis,
I checked that and all 'normal' objects are serializable.
The only thing I could think of is a static reference
to org.apache.commons.logging.Log.
I will try to declare this field as transient.
Thanks,
Florian.
Denis Pasek schrieb:
Hi Florian,
seems to be a problem of serialization/deserialization. The JCS lateral cache
wraps every cache operation into a LateralElementDescriptor which contains the
key, the value and the cache event type (put, remove etc.). These descriptor
objects are sent to all lateral peers and there they're deserialized.
A single field inside a value will never be wrapped into such a descriptor
object.
Since your stacktrace only contains the standard Java IO
serialization/deserialization stuff it's not possible to determine the reason.
Maybe you can send the whole stacktrace (and the JCS version you're using) and
check the following things:
- are all value classes Serializable (also the referenced sub objects).
- are there custom implementations of serialization/deserialization in your
classes that could be responsible for the problems.
The structure of your stored value could also be of some help since the problem
seems to occur deserializing a HashMap. What's inside this HashMap?
Cheers
Denis
-----Ursprüngliche Nachricht-----
Von: Florian Hawlitzek [mailto:[EMAIL PROTECTED]
Gesendet: Montag, 30. Oktober 2006 16:33
An: JCS Users List
Betreff: ClassCastExceptions
Hi,
I'm getting often ClassCastExceptions when using the LateralCache.
I don't know why, but JCS seems to change simple String fields
to a thing called LateralElementDescriptor.
What can I do?
Thanks,
Florian.
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
[org.apa
che.jcs.auxiliary.lateral.socket.tcp.LateralTCPListener] Unexpected
exception. Closing conneciton java.lang.ClassCastException: cannot
assign instance of
org.apache.jcs.auxiliary.lateral.LateralElementDescriptor to field
de.br.aroona.wetterdaten.vo.StationDataContainerVO.stationNameUser of
type java.lang.String in instance of
de.br.aroona.wetterdaten.vo.StationDataContainerVO
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at
java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(ObjectStreamClass.
java:1885)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java:1076)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1851)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1769)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at java.util.HashMap.readObject(HashMap.java:1006)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at sun.reflect.GeneratedMethodAccessor163.invoke(Unknown Source)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.
java:25)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at java.lang.reflect.Method.invoke(Method.java:324)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:838)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1746)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)
**** Error Mo Okt 30 13:15:47 CET 2006 1162210547045 ---
....stack trace CROPPED after 15 lines.
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