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https://issues.apache.org/jira/browse/LUCENE-2167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12929370#action_12929370
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Robert Muir commented on LUCENE-2167:
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{quote}
But if, say, we had a Tokenizer that recognizes hostnames/URLs, one that
recognizes email addresses, one for proper names/places/date/time, other app
dependent stuff like detecting part numbers and what not, then ideally one
could simply cascade/compose these tokenizers at will to build up whatever
"initial" tokenizer you need for you chain?
I think our current lack of composability of the initial tokenizer ("there can
be only one") makes cases like this hard...
{quote}
I agree that sounds like a "cool" idea to have, but at the same time, we should
try to not make analysis the "wonder-do-it-all" machine.
I mean some stuff belongs in the app, and i think that includes a lot of things
you mentioned... e.g. the app can do "NER" and pull
out proper names/places/dates and put them in separate fields.
I don't think the analysis chain is the easiest or best place to do this, i
would prefer if we tried to keep the complexity down and recognize
that some things (really a lot of this "recognizer" stuff) might be better
implemented in the app.
> Implement StandardTokenizer with the UAX#29 Standard
> ----------------------------------------------------
>
> Key: LUCENE-2167
> URL: https://issues.apache.org/jira/browse/LUCENE-2167
> Project: Lucene - Java
> Issue Type: New Feature
> Components: contrib/analyzers
> Affects Versions: 3.1, 4.0
> Reporter: Shyamal Prasad
> Assignee: Steven Rowe
> Priority: Minor
> Fix For: 3.1, 4.0
>
> Attachments: LUCENE-2167-jflex-tld-macro-gen.patch,
> LUCENE-2167-jflex-tld-macro-gen.patch, LUCENE-2167-jflex-tld-macro-gen.patch,
> LUCENE-2167-lucene-buildhelper-maven-plugin.patch,
> LUCENE-2167.benchmark.patch, LUCENE-2167.benchmark.patch,
> LUCENE-2167.benchmark.patch, LUCENE-2167.patch, LUCENE-2167.patch,
> LUCENE-2167.patch, LUCENE-2167.patch, LUCENE-2167.patch, LUCENE-2167.patch,
> LUCENE-2167.patch, LUCENE-2167.patch, LUCENE-2167.patch, LUCENE-2167.patch,
> LUCENE-2167.patch, LUCENE-2167.patch, LUCENE-2167.patch, LUCENE-2167.patch,
> LUCENE-2167.patch, LUCENE-2167.patch, LUCENE-2167.patch, LUCENE-2167.patch,
> LUCENE-2167.patch, standard.zip, StandardTokenizerImpl.jflex
>
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> It would be really nice for StandardTokenizer to adhere straight to the
> standard as much as we can with jflex. Then its name would actually make
> sense.
> Such a transition would involve renaming the old StandardTokenizer to
> EuropeanTokenizer, as its javadoc claims:
> bq. This should be a good tokenizer for most European-language documents
> The new StandardTokenizer could then say
> bq. This should be a good tokenizer for most languages.
> All the english/euro-centric stuff like the acronym/company/apostrophe stuff
> can stay with that EuropeanTokenizer, and it could be used by the european
> analyzers.
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