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https://issues.apache.org/jira/browse/STANBOL-654?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rupert Westenthaler reopened STANBOL-654:
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Tokens with wildcards ('?' or '*') MUST NOT be quoted - see
http://markmail.org/message/jlrivpcxnrmdpwsd
> The SolrYard does not correcly enclose multi word query terms in quotes
> -----------------------------------------------------------------------
>
> Key: STANBOL-654
> URL: https://issues.apache.org/jira/browse/STANBOL-654
> Project: Stanbol
> Issue Type: Bug
> Components: Entity Hub
> Reporter: Rupert Westenthaler
> Assignee: Rupert Westenthaler
> Priority: Critical
> Fix For: entityhub-0.10.0-incubating
>
>
> STANBOL-607 introduced that natural language constraints containing of
> multiple words are encoded using "Frankfurt am Main" instead of (Frankfurt
> AND am AND Main).
> However the implementation does not correctly put "quotes" around multi word
> tokens
> Because of that a query for the rdfs:label "Frankfurt am Main" is encoded as
> (_\!@/rdfs\:label/:Frankfurt am Main)
> instead of
> (_\!@/rdfs\:label/:"Frankfurt am Main")
> resulting in Solr to search for
> * "Frankfurt" in the values of rdfs:label OR
> * "am" in the full text field OR
> * "Main" in the full text field
> instead of "Frankfurt am Main" in the values of rdfs:label.
> Sadly all unit test passes because for the used DBpedia test data Solr
> ranking "ensures" that the wrongly encoded query has the same result as a
> correctly encoded one.
> However on bigger data sets with more data in the full text field this really
> has a big impact on query results.
> NOTE: the release 0.9.0-incubating version is NOT affected by this as this
> was only introduced in the trunk while working on 0.10.0!
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