[jira] [Commented] (LUCENE-7355) Leverage MultiTermAwareComponent in query parsers

["Adrien Grand (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-7355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15351156#comment-15351156 ] 

Adrien Grand commented on LUCENE-7355:
--------------------------------------

I propose the following plan:
 - add {{TokenStream tokenStreamMultiTerm(String fieldName, String text)}} to {{Analyzer}}.
 - change {{Analyzer.createComponents}} to take an additional boolean {{multiTerm}} parameter to know which parts of the analysis chain it should use when analyzing multi-term queries. For instance, the standard analyzer would apply a keyword tokenizer rather than a standard tokenizer, and only apply the standard and lowercase filters (no stop words). CustomAnalyzer would only apply the factories that implement {{MultiTermAwareComponent}} and pass them through {{MultiTermAwareComponent.getMultiTermComponent()}}.
 - change query parsers to call {{tokenStreamMultiTerm}} rather than {{tokenStream}} when analyzing text for wildcard, regexp or fuzzy queries.

> Leverage MultiTermAwareComponent in query parsers
> -------------------------------------------------
>
>                 Key: LUCENE-7355
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7355
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Priority: Minor
>
> MultiTermAwareComponent is designed to make it possible to do the right thing in query parsers when in comes to analysis of multi-term queries. However, since query parsers just take an analyzer and since analyzers do not propagate the information about what to do for multi-term analysis, query parsers cannot do the right thing out of the box.



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