Michael Böckling wrote:
>> Yes Nutch uses a Query class different then lucene. The query is also
>> parsed differently,
>> What nutch does basically is that, nutch parses the query with
>> Query.parse, then it runs
>> all the query plugins, which convert the nutch query to
>> lucene boolean
>> query. Then this lucene
>> query is sent to index servers, which uses lucene's searchers.
>
> Does that mean that Nutch will choke on "original Lucene" search queries?
> Since the same query is (in my case) fed to both Nutch for the static
> content and Lucene for the dynamic stuff, that wouldn't work well, i'm
> afraid.
>
No it wouldn't - Nutch query syntax is a strict subset of the Lucene
query syntax. However, Nutch doesn't throw parse errors on unrecognized
syntax, instead it silently discards operands that it doesn't
understand, according to the query analyzer.
You can test how user queries are parsed into Nutch queries, and then
translated into Lucene queries, using this tool:
bin/nutch org.apache.nutch.searcher.Query
--
Best regards,
Andrzej Bialecki <><
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