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https://issues.apache.org/jira/browse/SOLR-3143?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir reassigned SOLR-3143:
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Assignee: Robert Muir
> Supply a phrase-oriented QueryConverter for Suggesters
> ------------------------------------------------------
>
> Key: SOLR-3143
> URL: https://issues.apache.org/jira/browse/SOLR-3143
> Project: Solr
> Issue Type: New Feature
> Components: spellchecker
> Reporter: Robert Muir
> Assignee: Robert Muir
> Fix For: 3.6, 4.0
>
>
> The supplied QueryConverter makes sense for Spellcheckers:
> it tries to parse out the 'meat' of the query (using e.g. identifier rules),
> and analyzes each parsed 'word' with the configured analyzer (separate
> tokenstream).
> {code}
> words[] = splitByIdentifierRules();
> for (each word) {
> tokenstream ts = analyzer.tokenStream(word)
> for (each analyzedWord from tokenstream) {
> tokens.add(analyzedWord)
> }
> }
> {code}
> However, for Suggesters this is not really optimal, because in the general
> case they do not work one word at a time: they aren't really suggesting
> individual words but instead an entire 'query' that matches a prefix.
> so instead here, I think we just want a QueryConverter that creates a
> single string containing all the 'meat', and we pass the whole thing to
> the analyzer, then the suggester.
> The current workaround on the wiki to this problem, is to ask the user to
> write custom
> code (http://wiki.apache.org/solr/Suggester#Tips_and_tricks), I think thats
> not
> great since this phrase-based suggesting is really the primary use case for
> suggesters.
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