[weld-dev] Wire Compatibility

[Andrew Lee Rubinger]

I'm not seeing a link to make a new entry on:

http://seamframework.org/Documentation/Testing

Perhaps I don't have permissions?

If someone else would like to post the email from below, that'd be great. :)

S,
ALR

On 07/07/2010 11:07 PM, Pete Muir wrote:
> Hi Andy
>
> I suspect this is more useful for our end users, as we don't provide any serialization services in Weld - they are either provided by the user who implements serializable, or by the EJB container.
>
> Could you make this into a FAQ on seamframework.org?
>
> Thanks!
>
> On 28 Jun 2010, at 07:18, Andrew Lee Rubinger wrote:
>
>> Hey guys:
>>
>> Had a good talk w/ Dan and Lincoln at the conclusion of JBossWorld
>> regarding wire compatibility and was asked to pass references along to
>> this list.
>>
>> The key is that marking a class as "implements Serializable" isn't
>> sufficient to:
>>
>> 1) Make it really Serializable
>> 2) Ensure that the wire protocol maintains compatibility across releases
>>
>> I've been using a technique documented by Bob Lee awhile back:
>>
>> http://crazybob.org/2006/01/unit-testing-serialization-evolution_13.html
>>
>> The idea is that after you've formalized your protocol (ie.
>> Externalizable or readObject/writeObject explicitly), you make a copy of
>> this original class.  Then, using a special ObjectOutputStream, you can
>> redefine this class as a new name, hence converting from old to new or
>> new to old.
>>
>> For instance, I implement this here in ShrinkWrap to make Archives
>> Serializable:
>>
>> http://anonsvn.jboss.org/repos/common/shrinkwrap/trunk/impl-base/src/test/java/org/jboss/shrinkwrap/impl/base/serialization/SerializationTestCase.java
>>
>> Recommend this approach, or one similar.  Some folks like to serialize
>> the original version into a .ser file which stays in SCM, and ends up
>> being the basis for the test point.  But that can only test compat in
>> one direction.
>>
>> S,
>> ALR
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>