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https://issues.apache.org/jira/browse/SOLR-1677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12800518#action_12800518
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Robert Muir commented on SOLR-1677:
-----------------------------------
bq. The implication i got from Robert was that there was (or would soon be)
expectations in Lucene-Java code that if one object was told to use Version.X
it wold be assumed that every other object in the application was using
Version.X.
Hoss, I didn't mean to imply any such thing, just that i don't see any tests
(or the framework for testing such behavior), so even if its officially
supported, in my opinion it does not exist.
For example, as far as analysis goes, my personal opinion is that in any given
package (say one language, or whatever), we will test the entire Analyzer
against Version X, and will test that back compat works for Version Y, Z, etc.
But i personally can't see myself ensuring the all the underlying tokenstreams
(maybe this language uses 5 lets say), works across all the permutations of
different versions { X, Y, Z } you can apply, its simply asking too much.
> Add support for o.a.lucene.util.Version for BaseTokenizerFactory and
> BaseTokenFilterFactory
> -------------------------------------------------------------------------------------------
>
> Key: SOLR-1677
> URL: https://issues.apache.org/jira/browse/SOLR-1677
> Project: Solr
> Issue Type: Sub-task
> Components: Schema and Analysis
> Reporter: Uwe Schindler
> Attachments: SOLR-1677.patch, SOLR-1677.patch, SOLR-1677.patch,
> SOLR-1677.patch
>
>
> Since Lucene 2.9, a lot of analyzers use a Version constant to keep backwards
> compatibility with old indexes created using older versions of Lucene. The
> most important example is StandardTokenizer, which changed its behaviour with
> posIncr and incorrect host token types in 2.4 and also in 2.9.
> In Lucene 3.0 this matchVersion ctor parameter is mandatory and in 3.1, with
> much more Unicode support, almost every Tokenizer/TokenFilter needs this
> Version parameter. In 2.9, the deprecated old ctors without Version take
> LUCENE_24 as default to mimic the old behaviour, e.g. in StandardTokenizer.
> This patch adds basic support for the Lucene Version property to the base
> factories. Subclasses then can use the luceneMatchVersion decoded enum (in
> 3.0) / Parameter (in 2.9) for constructing Tokenstreams. The code currently
> contains a helper map to decode the version strings, but in 3.0 is can be
> replaced by Version.valueOf(String), as the Version is a subclass of Java5
> enums. The default value is Version.LUCENE_24 (as this is the default for the
> no-version ctors in Lucene).
> This patch also removes unneeded conversions to CharArraySet from
> StopFilterFactory (now done by Lucene since 2.9). The generics are also fixed
> to match Lucene 3.0.
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