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From "John McClain (JIRA)" <j...@apache.org>
Subject [jira] Updated: (RIVER-130) JavaSpaces spec is silent on schema evolution
Date Sat, 28 Jul 2007 00:09:53 GMT

     [ https://issues.apache.org/jira/browse/RIVER-130?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

John McClain updated RIVER-130:

    Priority: Minor  (was: Major)

> JavaSpaces spec is silent on schema evolution
> ---------------------------------------------
>                 Key: RIVER-130
>                 URL: https://issues.apache.org/jira/browse/RIVER-130
>             Project: River
>          Issue Type: Improvement
>          Components: net_jini_space
>    Affects Versions: jtsk_1.0
>            Reporter: John McClain
>            Priority: Minor
> Bugtraq ID [4256312|http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4256312]
> User write entries of class {{Foo}}, modifies the class {{Foo}} (adding fields say) and
then write more entries....should anything reasonable happen?  At the very least we should
put verbiage in the spec saying that the results are undefined.
> Comments:
> We might also want to consider throwing an exception so that client program is notified
of this condition
> An intresing example of this problem in real life was the removal of the static
> serVerID from Serializable between 1.2 and 1.2.2.  This caused problems because
> this made Entries from 1.2 VM have a different number of field as those from 1.2.2 VMs

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