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https://issues.apache.org/jira/browse/LUCENE-7827?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mikhail Khludnev resolved LUCENE-7827.
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Resolution: Fixed
Fix Version/s: 7.1
master (8.0)
> disable "textgrams" when minPrefixChars=0 AnalyzingInfixSuggester
> ------------------------------------------------------------------
>
> Key: LUCENE-7827
> URL: https://issues.apache.org/jira/browse/LUCENE-7827
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Mikhail Khludnev
> Priority: Minor
> Fix For: master (8.0), 7.1
>
> Attachments: LUCENE-7827.patch, LUCENE-7827.patch, LUCENE-7827.patch,
> LUCENE-7827.patch, LUCENE-7827.patch
>
>
> The current code allows to set minPrefixChars=0, but it creates an
> unnecessary {{textgrams}} field, and might bring significant footprint.
> Bypassing it keeps existing tests green.
> {code}
> if (fieldName.equals("textgrams") && minPrefixChars > 0) {
> TokenFilter filter = new
> EdgeNGramTokenFilter(components.getTokenStream(), 1, minPrefixChars);
> return new TokenStreamComponents(components.getTokenizer(), filter);
> } else {
> return components; // threre is no sense to go here if
> minPrefixChars==0 and fieldName=="textgrams"
> }
> {code}
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