[jira] [Commented] (STANBOL-607) SolrYard should use quotes instead of AND for multi word TextConstraints

["Rupert Westenthaler (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/STANBOL-607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13271285#comment-13271285 ] 

Rupert Westenthaler commented on STANBOL-607:
---------------------------------------------

Ragarding "Frankf* am Main":

This is not supported to use wild cards within brackets. So the best solution is to keep the tokenized for for TextConstraint that do use wild cards (meaning separate tokens that contain '?' or '*')

That means that the above query would be best encoded as follows.

    (_\!@/rdfs\:label/:Frankf*) AND (_\!@/rdfs\:label/:"am Main")
                
> SolrYard should use quotes instead of AND for multi word TextConstraints
> ------------------------------------------------------------------------
>
>                 Key: STANBOL-607
>                 URL: https://issues.apache.org/jira/browse/STANBOL-607
>             Project: Stanbol
>          Issue Type: Improvement
>            Reporter: Rupert Westenthaler
>            Assignee: Rupert Westenthaler
>            Priority: Minor
>             Fix For: 0.10.0-incubating
>
>
> Currently a Text constraint for rdfs:label containing "The Book of Three" is encoded like
>     (_\!@/rdfs\:label/:The) AND ((_\!@/rdfs\:label/:Book) AND  (_\!@/rdfs\:label/:of) AND(_\!@/rdfs\:label/:Three))
> however Solr/Lucene allow to use quotes for multi word searches. So the correct way to encode this query would be
>     ((_\!@/rdfs\:label/:"The Book of Three"))
> This need to be fixed in the "org.apache.stanbol.entityhub.yard.solr.query.QueryUtils#encodeQueryValue(..)
> NOTE: The impact of this change for Wildcard queries need to be further investigated
> e.g  take a query "Frankf* am Main" currently encoded like
>     (_\!@/rdfs\:label/:Frankf*) AND ((_\!@/rdfs\:label/:am) AND  (_\!@/rdfs\:label/:main))
> would than result in
>     ((_\!@/rdfs\:label/:"Frankf* am Main"))

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