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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1473) Implement standard Serialization across Lucene versions
Date Fri, 12 Dec 2008 17:20:44 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12656071#action_12656071
] 

Doug Cutting commented on LUCENE-1473:
--------------------------------------

> Therefore the patch is to be taken as contribution to explore the design space [ ...
]

Yes, and it is much appreciated for that.  Thanks again!

> Currently Searchable does include a HitCollector-based search method [ ... ]

You're right.  I misremembered.  This dates back to the origin of Searchable.

http://svn.apache.org/viewvc?view=rev&revision=149813

Personally, I think it would be reasonable for a distributed implementation to throw an exception
if one tries to use a HitCollector.

> We could either solve it along the line you propose, or revert to pass the Weight again
instead of the Query.

Without using an introspection-based serialization like Java serialization it would be difficult
to pass a Weight over the wire using public APIs, since most implementations are not public.
 But, since Weight's are constructed via a standard protocol, the method I outlined could
work.


> Implement standard Serialization across Lucene versions
> -------------------------------------------------------
>
>                 Key: LUCENE-1473
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1473
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Search
>    Affects Versions: 2.4
>            Reporter: Jason Rutherglen
>            Priority: Minor
>         Attachments: custom-externalizable-reader.patch, LUCENE-1473.patch, LUCENE-1473.patch,
LUCENE-1473.patch, LUCENE-1473.patch, lucene-contrib-remote.patch
>
>   Original Estimate: 8h
>  Remaining Estimate: 8h
>
> To maintain serialization compatibility between Lucene versions, serialVersionUID needs
to be added to classes that implement java.io.Serializable.  java.io.Externalizable may be
implemented in classes for faster performance.

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