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https://issues.apache.org/jira/browse/LUCENE-1701?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-1701:
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Attachment: NumericField.java
Here is a first draft of NumericField with the same handling as
NumericTokenStream. It is for indexing only, on retrieving stored fields, one
would get the numeric field value as a string (according to Number.toString()).
Because of this, this class returns in stringValue() the string representation
of the numeric value and with tokenStreamValue the NumericTokenStream is
returned.
For SortField I still have the very strong opinion, that here a extra class is
not needed. A factory is enough (and even too much, supplying the Parser to
SortField would be enough).
I will later post a patch with this file and the moved/made public Parsers.
> Add NumericField and NumericSortField, make plain text numeric parsers public
> in FieldCache, move trie parsers to FieldCache
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-1701
> URL: https://issues.apache.org/jira/browse/LUCENE-1701
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Index, Search
> Affects Versions: 2.9
> Reporter: Uwe Schindler
> Assignee: Uwe Schindler
> Fix For: 2.9
>
> Attachments: NumericField.java
>
>
> In discussions about LUCENE-1673, Mike & me wanted to add a new NumericField
> to o.a.l.document specific for easy indexing. An alternative would be to add
> a NumericUtils.newXxxField() factory, that creates a preconfigured Field
> instance with norms and tf off, optionally a stored text (LUCENE-1699) and
> the TokenStream already initialized. On the other hand
> NumericUtils.newXxxSortField could be moved to NumericSortField.
> I and Yonik tend to use the factory for both, Mike tends to create the new
> classes.
> Also the parsers for string-formatted numerics are not public in FieldCache.
> As the new SortField API (LUCENE-1478) makes it possible to support a parser
> in SortField instantiation, it would be good to have the static parsers in
> FieldCache public available. SortField would init its member variable to them
> (instead of NULL), so making code a lot easier (FieldComparator has this ugly
> null checks when retrieving values from the cache).
> Moving the Trie parsers also as static instances into FieldCache would make
> the code cleaner and we would be able to hide the "hack"
> StopFillCacheException by making it private to FieldCache (currently its
> public because NumericUtils is in o.a.l.util).
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