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From "Michael McCandless (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (LUCENE-3177) Decouple indexer from Document/Field impls
Date Tue, 20 Mar 2012 15:11:43 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-3177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless resolved LUCENE-3177.
----------------------------------------

    Resolution: Fixed
    
> Decouple indexer from Document/Field impls
> ------------------------------------------
>
>                 Key: LUCENE-3177
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3177
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: 4.0
>
>         Attachments: LUCENE-3177.patch, LUCENE-3177.patch
>
>
> I think we should define minimal iterator interfaces,
> IndexableDocument/Field, that indexer requires to index documents.
> Indexer would consume only these bare minimum interfaces, not the
> concrete Document/Field/FieldType classes from oal.document package.
> Then, the Document/Field/FieldType hierarchy is one concrete impl of
> these interfaces. Apps are free to make their own impls as well.
> Maybe eventually we make another impl that enforces a global schema,
> eg factored out of Solr's impl.
> I think this frees design pressure on our Document/Field/FieldType
> hierarchy, ie, these classes are free to become concrete
> fully-featured "user-space" classes with all sorts of friendly sugar
> APIs for adding/removing fields, getting/setting values, types, etc.,
> but they don't need substantial extensibility/hierarchy. Ie, the
> extensibility point shifts to IndexableDocument/Field interface.
> I think this means we can collapse the three classes we now have for a
> Field (Fieldable/AbstracField/Field) down to a single concrete class
> (well, except for LUCENE-2308 where we want to break out dedicated
> classes for different field types...).

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