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https://issues.apache.org/jira/browse/NUTCH-573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12542449
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Enis Soztutar commented on NUTCH-573:
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@Andrzej
I recall google over comma delimited syntax, but now it doesn't work. does it?
Maybe I remembered wrong.
http://www.google.com/intl/en/help/operators.html confirms that comma delimited
syntax is not allowed, but a we can make allintitle: ... type queries.
I think the raw fields, which are site, date, type and lang are unlikely to
contain commas, so we may not have to worry about escape characters. As far as
i know, we treat comma as white space, so searching comma-containing phrases in
raw fields is not enabled anyway. Of course we may fix this should it be
needed.
@Dogacan
I share the same concerns about performance and complexity about NUTCH-479.
However it may be good if it were implemented correct.
> Multiple Domains - Query Search
> -------------------------------
>
> Key: NUTCH-573
> URL: https://issues.apache.org/jira/browse/NUTCH-573
> Project: Nutch
> Issue Type: Improvement
> Components: searcher
> Affects Versions: 0.9.0
> Environment: All
> Reporter: Rajasekar Karthik
> Assignee: Enis Soztutar
> Fix For: 1.0.0
>
> Attachments: multiTermQuery_v1.patch
>
>
> Searching multiple domains can be done on Lucene - nut not that efficiently
> on nutch.
> Query:
> +content:"abc" +(site"www.aaa.com" site:"www.bbb.com")
> works on lucene but the same concept does not work on nutch.
> In Lucene, it works with
> org.apache.lucene.analysis.KeywordAnalyzer
> org.apache.lucene.analysis.standard.StandardAnalyzer
> but NOT on
> org.apache.lucene.analysis.SimpleAnalyzer
> Is Nutch analyzer based on SimpleAnalyzer? In this case, is there a
> workaround to make this work? Is there an option to change what analyzer
> nutch is using?
> Just FYI, another solution (inefficient I believe) which seems to be working
> on nutch
> <query> -site:"ccc.com" -site:"ddd.com"
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