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From "Yonik Seeley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-778) Allow overriding a Document
Date Fri, 02 Nov 2007 12:55:51 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12539574
] 

Yonik Seeley commented on LUCENE-778:
-------------------------------------

> getStoredFields() methods that return a Map<String, Field>

Or a Map<String,Field[]> or Map<String,Object> where Object could be Field or
Field[]
Unless it was a LinkedHashMap, that would also lose the ordering of different fields.

Document is lightweight now...pretty much just a List<Fieldable> that the user can get
directly at.
If anything, a factory for Fieldable (which for Field, isn't as lightweight) would be more
useful than a Document factory.


> Allow overriding a Document
> ---------------------------
>
>                 Key: LUCENE-778
>                 URL: https://issues.apache.org/jira/browse/LUCENE-778
>             Project: Lucene - Java
>          Issue Type: New Feature
>    Affects Versions: 2.0.0
>            Reporter: Nicolas Lalevée
>            Priority: Trivial
>
> In our application, we have some kind of generic API that is handling how we are using
Lucene. The different other applications are using this API with different semantics, and
are using the Lucene fields quite differently. We wrote some usefull functions to do this
mapping. Today, as the Document class cannot be overriden, we are obliged to make a document
wrapper by application, ie some MyAppDocument and MyOtherAppDocument which have a property
holding a real Lucene Document. Then, when MyApp or MyOtherApp want to use our generic lucene
API, we have to "get out" the Lucene document, ie do some genericLuceneAPI.writeDoc(myAppDoc.getLuceneDocument()).
This work fine, but it becomes quite tricky to use the other function of our generic API which
is genericLuceneAPI.writeDocs(Collection<Document> docs).
> I don't know the rational behind making final Document, but removing it will allow more
object-oriented code.

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