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https://issues.apache.org/jira/browse/LUCENE-2308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13051512#comment-13051512
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Michael McCandless commented on LUCENE-2308:
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Patch looks good, thanks Nikola!
When you make the patch, can you run "svn diff" from the top-level
dir? Ie, so that file paths look
lucene/src/java/org/apache/lucene/document/Field.java
A couple minor code-formatting things:
* Please add { } around one-line ifs, eg in FieldType.toString
* import lines go after the copyright (FieldType.java)
* If possible please try to avoid adding "noise" to the patch, for
example re-formatting javadocs (eg NumericField.java). It's fine
to clean things up (add missing {}'s to existing code) as you go,
but if it's simply a reformat that just adds noise which makes it
harder to see real changes.
Other stuff:
* The DEFAULT_TYPE for each field can be final right?
* For FieldType, can we use direct members of the class, instead of
the EnumSet? (Ie, boolean indexed, boolean stored, etc.).
The patch causes compilation errors when I run "ant compile-core", but
that's expected right?
I think our immediate goal here should be to get a compilable patch
with tests passing, ie the "dirt path". Then we can go back and
iterate.
But, because so many tests rely on the current Document/Field API... I
think in order to stage this we should make a totally new package,
call it document2 for now, and create all these new classes inside
there. Then, one by one we can cutover tests to use document2/*,
starting with TestDemo. Eventually, once everything is cutover, we
can remove document and rename document2 to document.
> Separately specify a field's type
> ---------------------------------
>
> Key: LUCENE-2308
> URL: https://issues.apache.org/jira/browse/LUCENE-2308
> Project: Lucene - Java
> Issue Type: Improvement
> Components: core/index
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Labels: gsoc2011, lucene-gsoc-11, mentor
> Fix For: 4.0
>
> Attachments: LUCENE-2308-2.patch, LUCENE-2308.patch, LUCENE-2308.patch
>
>
> This came up from dicussions on IRC. I'm summarizing here...
> Today when you make a Field to add to a document you can set things
> index or not, stored or not, analyzed or not, details like omitTfAP,
> omitNorms, index term vectors (separately controlling
> offsets/positions), etc.
> I think we should factor these out into a new class (FieldType?).
> Then you could re-use this FieldType instance across multiple fields.
> The Field instance would still hold the actual value.
> We could then do per-field analyzers by adding a setAnalyzer on the
> FieldType, instead of the separate PerFieldAnalzyerWrapper (likewise
> for per-field codecs (with flex), where we now have
> PerFieldCodecWrapper).
> This would NOT be a schema! It's just refactoring what we already
> specify today. EG it's not serialized into the index.
> This has been discussed before, and I know Michael Busch opened a more
> ambitious (I think?) issue. I think this is a good first baby step. We could
> consider a hierarchy of FIeldType (NumericFieldType, etc.) but maybe hold
> off on that for starters...
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