Re: [sparql-wrapper-devel] Query bad formed

[Visser, D. <dv...@id...>]

Mariano:

Looking at your updated query, I've highlighted all well-formed graph pattern statements in green. The first item in the WHERE clause is still problematic, though. I've highlighted it in yellow. It is simply a resource URI and a period. There needs to be a predicate connecting it to a subject or object as well. My guess is that you're wanting to bind it to the ?x variable. A good way to do this is to replace that first syntactically incorrect item with

BIND(<http://dbpedia.org/resource/Tim_Cook> AS ?x)

Best regards,
Dale

From: Mariano Alvarez [mailto:ro...@li...]
Sent: Friday, August 16, 2013 11:18 AM
To: spa...@li...
Subject: Re: [sparql-wrapper-devel] Query bad formed

Thanks for your response Dale, but I keep getting the error. This is the updated query:

u"\n        SELECT * WHERE { <http://dbpedia.org/resource/Tim_Cook>.\n          ?x dbpedia-owl:abstract ?abstract.\n          OPTIONAL { ?x dbpedia-owl:birthDate ?birthDate }\n  OPTIONAL { ?x dbpedia-owl:birthPlace ?birthPlace }\n  OPTIONAL { ?x dbpprop:name ?name }\n  OPTIONAL { ?x dbpedia-owl:profession ?profession }\n  OPTIONAL { ?x dbpprop:residence ?residence }\n  OPTIONAL { ?x dbpprop:website ?website }\n  \n          FILTER (LANG(?abstract) = 'en')\n        }\n    "
________________________________
From: dv...@id...<mailto:dv...@id...>
To: spa...@li...<mailto:spa...@li...>
Date: Fri, 16 Aug 2013 11:08:03 -0400
Subject: Re: [sparql-wrapper-devel] Query bad formed
Mariano:

There is a period after the first URI in the graph pattern, which is only supposed to come after a complete triple pattern:

u"\n        SELECT * WHERE {\n          <http://dbpedia.org/resource/Tim_Cook>.\n          ?x dbpedia-owl:abstract ?abstract.\n           OPTIONAL { ?x dbpedia-owl:birthDate ?birthDate. OPTIONAL { ?x dbpedia-owl:birthPlace ?birthPlace. OPTIONAL { ?x dbpprop:name ?name. OPTIONAL { ?x dbpedia-owl:profession ?profession. OPTIONAL { ?x dbpprop:residence ?residence. OPTIONAL { ?x dbpprop:website ?website.\n          FILTER (LANG(?abstract) = 'en')\n        }\n    "

Best regards,
Dale Visser

From: Mariano Alvarez [mailto:ro...@li...]
Sent: Friday, August 16, 2013 10:20 AM
To: spa...@li...<mailto:spa...@li...>
Subject: [sparql-wrapper-devel] Query bad formed

I'm trying to build a sparql query based on a list of properties but I get an error saying that the query is bad formed. The problem is I don't know what to do to fix it.

This is the function:

    def create_query(dbpedia_uri, props):
        #props are something like this ('dbpedia-owl', 'birthdate')
        filters = ''

        for prop in QUERIES_DICT[ename]:
            filters += ' OPTIONAL { ?x %s:%s ?%s.' % (corresp_dict[prop[0]], prop[1], prop[1])

        query = u"""
            SELECT * WHERE {
    .          <%s>.
              ?x dbpedia-owl:abstract ?abstract.
              %s
              FILTER (LANG(?abstract) = 'en')
            }
        """ % (dbpedia_uri, filters)

        return query

This is the query I get:

    u"\n        SELECT * WHERE {\n          <http://dbpedia.org/resource/Tim_Cook>.\n          ?x dbpedia-owl:abstract ?abstract.\n           OPTIONAL { ?x dbpedia-owl:birthDate ?birthDate. OPTIONAL { ?x dbpedia-owl:birthPlace ?birthPlace. OPTIONAL { ?x dbpprop:name ?name. OPTIONAL { ?x dbpedia-owl:profession ?profession. OPTIONAL { ?x dbpprop:residence ?residence. OPTIONAL { ?x dbpprop:website ?website.\n          FILTER (LANG(?abstract) = 'en')\n        }\n    "


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