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https://issues.apache.org/jira/browse/LUCENE-1473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12655676#action_12655676
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Wolf Siberski commented on LUCENE-1473:
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This seems to be the right way to go. The patch attached removes all
dependencies to Serializable and Remote from the core and moves it to
contrib/remote. I introduced a new interface RemoteSearcher
(not RemoteSearchable because I didn't want to pass Weights around),
implemented by DefaultRemoteSearcher. An adapter realizing Searchable and
delegating to RemoteSearcher is also included (RemoteSearcherAdapter.
Encoding/Decoding of Lucene objects is delegated to the
org.apache.lucene.remote.Serializer. For a sample serialization, I employed
XStream which offers XML serialization (nearly) out-of-the-box.
Everything is rather undocumented and would need a lot of cleanup, but as
proof-of-concept it should be ok. Core and remote tests pass, with one
exception: it is not possible anymore to serialize a RAMDirectory.
What I don't like with the current patch is that a lot of different objects are
passed around to keep the Searchable interface alive. Would it be possible to
refactor such that Searchable represents a higher-level interface (or introduce
a new alternative abstraction)?
> 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
>
> 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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