Re: [topbraid-users] Faceted Search in TopBraid 4.3

Holger Knublauch Tue, 21 Jan 2014 16:05:14 -0800

Michael,

Jena's latest versions basically offer a programmatic way ofsynchronizing a (Lucene/Solr) text index so that certain text operationscan be handled faster than with the FILTER regex trick. Our Solrintegration offers similar capabilities although only for facetedsearch. So it would certainly make sense to generalize this (like weused to have with LARQ support) and we do have such a JIRA ticket on ourlist. The problem is keeping track of changes, and making sure that theexternal text index doesn't get out of synch. This is easy for Jena APIusers in a controlled environment but harder for a generic tool such asTopBraid. That's why this task hasn't made it to the top of our list.

Could you clarify what your use case is so that we can better understandthe benefits?


Thanks
Holger


On 1/22/2014 9:49, Scott Henninger wrote:

Michale, Composer used to support LARQ, but we have moved to Solr forserver solutions. Jena and Jena ARQ are the platform TopBraid isbuilt over.


-- Scott

On 1/21/2014, 5:32 PM, Michael B. wrote:

Do you have any plans on integrating Jena ARQ? It offers text searchover pretty much everything out of the box...


-- Michael

On Thursday, 2 January 2014 18:32:10 UTC+1, Scott Henninger wrote:

    Stephane; Text search is separate from Solr indexing.  As stated,
    the Jena interface is not directly supported. But if you look in
    the Search View, the 'Search any Text' does what I think you want
    out-of-the-box.  This is a property-based search, therefore it
    will by default search all datatype properties for the chosen
    class and its subclasses (to search across the entire project,
    choose the top-level node).

    You can also restrict which properties the search field will
    search - see
    
http://topquadrant.com/topbraid/evn/43doc/adminguide.html#activateSrchTxtProps
    
<http://topquadrant.com/topbraid/evn/43doc/adminguide.html#activateSrchTxtProps>.


    Note this is a regex search and in 4.3.1 performs a phrase
    search, so [condition action] would not match "condition and
    action".  In 4.4, out later this month, the phrases will be
    tokenized, so [condition action] would match "condition and
    action", as would ["condition and"].

    -- Scott

    On 1/2/2014, 10:58 AM, Stephane Varin wrote:

    Hi Scott,

    Thanks a lot for the prompt answer. Following Mark's previous
    answer, I have successfully configured EVN's interface with Solr
    and I have no additional question at this point.

    My current question is independent of EVN. I would like to know
    if it is possible to use the solr index from TBC, i.e. execute a
    "sparql query + text search" directly from Top Braid Composer,
    such as

    PREFIX text:<http://jena.apache.org/text#>  <http://jena.apache.org/text#>
    PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

    SELECT ?s
    { ?s text:query (rdfs:label 'word' 10) ;
          rdfs:label ?label
    }
    (from http://jena.apache.org/documentation/query/text-query.html
    <http://jena.apache.org/documentation/query/text-query.html>)

    I see there are some SparqlMotion Modules related to Solr, and I
    have also found a solr.ttl file, but so far I have not been able
    to figure out how to "assemble" the pieces.

    Cheers,
    Stéphane VARIN

    On Thursday, January 2, 2014 5:44:15 PM UTC+1, Scott Henninger
    wrote:

        Stephane;  There is a section in the EVN documentation that
        describes EVN's interface with Solr - see
        http://topquadrant.com/topbraid/evn/43doc/userguide.html#solr 
<http://topquadrant.com/topbraid/evn/43doc/userguide.html#solr>

        The Jena interface is not supported directly in the  EVN
        UI.  Instead, Solr is used in the background for the faceted
        search UI. Once set up, and EVN user will be able to use
        faceted search to look up property values - for example
        choosing a related concept or customized concept.

        That's a bit vague, so take a look at the documentation and
        let us know what questions arise from that.

        -- Scott

        On 1/2/2014, 9:58 AM, Stephane Varin wrote:

        Thanks Mark,

        After some further exploration, I have been able to
        configure a Solr instance and somehow "configure" it from
        EVN web interface. It seems to work fine. I suppose from
        now on, EVN will use the solr index to do some "full text
        search" in addition to the sparlq based search?

        Anyways, that is not exactly what I am trying to do here. I
        am looking for a way to run a SPARQL query in TopBraid
        Composer which combines SPARQL and Text Search, such as:

        PREFIX  text:  <http://jena.apache.org/text#>
        PREFIX  rdfs:  <http://www.w3.org/2000/01/rdf-schema#>

        SELECT  ?s

{ ?s text:query (rdfs:label 'word' 10) ;rdfs:label ?label}

        (from
        http://jena.apache.org/documentation/query/text-query.html
        <http://jena.apache.org/documentation/query/text-query.html>)

        Is this possible at all? If yes, how do I configure TBC to
        use my Solr instance?

        Cheers,
        Stephane VARIN

        PS: Happy New Year to all the users of TBC and all the
        support team at Top Quadrant !!!

        On Wednesday, December 18, 2013 6:11:35 PM UTC+1, Mark
        Graham wrote:

            Hi Stephane,

            Can click on the Schema.org Example project, click on
            Configure Solr. You will need to place a URL for your
            Solr account there.

            Thanks,
            Mark


            On Wed, Dec 18, 2013 at 11:32 AM, Stephane Varin
            <[email protected]> wrote:

                Hi all,

                We would like to use a search index from our Sparql
                queries, and we are investigating how to configure
                Lucene or Solr to work with Jena in our environment.

                I just came accross this article
                faceted-search-in-topbraid-43
                
<http://composing-the-semantic-web.blogspot.fr/2013/06/faceted-search-in-topbraid-43.html>
 which
                indicates:
                "The alternative mode is using Apache Solr, a
                Lucene-based search index that is optimized for
                faceted search scenarios. To make use of this, you
                only need to configure your TopBraid EVN project to
                synchronize with a Solr server."

                Would there be any documentation or example
                explaining how to do this?

                Cheers,
                Stéphane

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Re: [topbraid-users] Faceted Search in TopBraid 4.3

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