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https://issues.apache.org/jira/browse/LUCENE-5012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13663402#comment-13663402
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Michael McCandless commented on LUCENE-5012:
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bq. Will this Jira include some test code that query parsers can use so that
they can retrieve the graph for a stream containing multiple multi-term
synonyms so that they can then individually sausage the term sequences as well
as generate "OR" operators for string of sausages?
I think so ... the test case (TestStages) sort of does that already: it turns
the tokens into an automaton, to check that the automaton accepts the specified
sequence of tokens (and ONLY those sequences of tokens).
But, I think ideally we'd have a WordAutomatonQuery, which could take the
Automaton directly and match documents using that, instead of enumerating all
phrases an OR'ing them (which would be equivalent but presumably slower...). I
would do WordAutomatonQuery on a separate issue ...
> Make graph-based TokenFilters easier
> ------------------------------------
>
> Key: LUCENE-5012
> URL: https://issues.apache.org/jira/browse/LUCENE-5012
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/analysis
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Attachments: LUCENE-5012.patch
>
>
> SynonymFilter has two limitations today:
> * It cannot create positions, so eg dns -> domain name service
> creates blatantly wrong highlights (SOLR-3390, LUCENE-4499 and
> others).
> * It cannot consume a graph, so e.g. if you try to apply synonyms
> after Kuromoji tokenizer I'm not sure what will happen.
> I've thought about how to fix these issues but it's really quite
> difficult with the current PosInc/PosLen graph representation, so I'd
> like to explore an alternative approach.
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