How to serialize Throwable?

[Adorjann]

Discussed in #612

^{Originally posted by Adorjann July 17, 2023}
Hi, I would like to serialize an object that contains a field of type Throwable.

class ObjectToSerialize{
    Throwable throwable;
}
public class Main {

    public static void main(String[] args) {

        ObjectToSerialize objectToSerialize = new ObjectToSerialize();

        final SerializerFoundation<?> foundation = SerializerFoundation.New()
                .registerEntityTypes(ObjectToSerialize.class);
        final Serializer<byte[]> serializer = TypedSerializer.Bytes(foundation);      //line 18
        byte[] data = serializer.serialize(objectToSerialize);

        ObjectToSerialize restored = serializer.deserialize(data);

    }
} 

The code above produces:

Exception in thread "main" one.microstream.persistence.exceptions.PersistenceExceptionTypeNotPersistable: Type not persistable: "class java.lang.Throwable".
	at one.microstream.persistence.binary.internal.BinaryHandlerUnpersistable.guaranteeSubTypeInstanceViablity(BinaryHandlerUnpersistable.java:98)
	at one.microstream.persistence.types.PersistenceTypeHandlerManager$Default.lambda$recursiveEnsureTypeHandlers$0(PersistenceTypeHandlerManager.java:278)
	at one.microstream.persistence.binary.internal.AbstractBinaryHandlerReflective.iterateMemberTypes(AbstractBinaryHandlerReflective.java:591)
	at one.microstream.persistence.types.PersistenceTypeHandlerManager$Default.recursiveEnsureTypeHandlers(PersistenceTypeHandlerManager.java:271)
	at one.microstream.persistence.types.PersistenceTypeHandlerManager$Default.registerTypeHandler(PersistenceTypeHandlerManager.java:639)
	at one.microstream.persistence.types.PersistenceTypeHandlerManager$Default.internalEnsureTypeHandler(PersistenceTypeHandlerManager.java:616)
	at one.microstream.persistence.types.PersistenceTypeHandlerManager$Default.ensureTypeHandler(PersistenceTypeHandlerManager.java:384)
	at java.base/java.lang.Iterable.forEach(Iterable.java:75)
	at one.microstream.persistence.binary.util.SerializerFoundation$Default.createPersistenceManager(SerializerFoundation.java:211)
	at one.microstream.persistence.binary.util.TypedSerializer$Default.initialize(TypedSerializer.java:372)
	at one.microstream.persistence.binary.util.TypedSerializer$Default.<init>(TypedSerializer.java:262)
	at one.microstream.persistence.binary.util.TypedSerializer.New(TypedSerializer.java:145)
	at one.microstream.persistence.binary.util.TypedSerializer.Bytes(TypedSerializer.java:117)
	at com.testing.Main.main(Main.java:18)

If you can please point me to documentation or an example explaining how to do this.
Many Thanks!

[hg-ms]

Serializing Throwable and derived types is currently not supported by intend.
Nevertheless, there are use cases that can benefit from serializing Throwables. Therefore, keep that issue as an enhancement.