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https://issues.apache.org/jira/browse/LUCENE-2310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12845134#action_12845134
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Chris Male commented on LUCENE-2310:
------------------------------------

Haha, i whole heartedly agree with all your points.

One option instead of adding another method to return Iterable<Fieldable>, is 
for Document to implement Iterable<Fieldable> and to return a unmodifiable 
Iterator.

This would then fit nicely with future ideas I had about providing iterators 
based on FieldType criteria, allowing the IW to then retrieve an iterator of 
only those fields which are to be indexed for example.

> Reduce Fieldable, AbstractField and Field complexity
> ----------------------------------------------------
>
>                 Key: LUCENE-2310
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2310
>             Project: Lucene - Java
>          Issue Type: Sub-task
>          Components: Index
>            Reporter: Chris Male
>         Attachments: LUCENE-2310-Deprecate-AbstractField.patch, 
> LUCENE-2310-Deprecate-AbstractField.patch, 
> LUCENE-2310-Deprecate-AbstractField.patch
>
>
> In order to move field type like functionality into its own class, we really 
> need to try to tackle the hierarchy of Fieldable, AbstractField and Field.  
> Currently AbstractField depends on Field, and does not provide much more 
> functionality that storing fields, most of which are being moved over to 
> FieldType.  Therefore it seems ideal to try to deprecate AbstractField (and 
> possible Fieldable), moving much of the functionality into Field and 
> FieldType.

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