Definition#

The sparql markup allows to execute a query on the ontology repository. The result of the query will be rendered into the wiki page (instead of the query).

%%sparql...

After the SPARQL statement the following annotations can be inserted:

Annotation Description
@name Gives the SPARQL the specified name. The name can be used as reference in other markups (like InlineSparql)
@zebramode Renders the result table in zebra-style (gray/white).
@border A visual border is painted around the result table cells.
@rawOutput No abbreviations are used in the result table, but the full content (of literals for example) is printed.
@showQuery Besides the results of the query, also the query is shown in the view mode of the wiki.
@sorting The result table is sorted.
@timeout  The SPARQL gets more time to calculate the results; parameter in milliseconds.

Example#

The sparql markup allows full support of the SPARQL 1.1. query language specification, which can be found here: http://www.w3.org/TR/sparql11-query/

The following simple example shows a query selecting all instances of the class Person:

%%sparql
SELECT ?x  
WHERE {
  ?x rdf:type lns:Person .
}
@name: exampleQuery
@zebramode: true
@border: true 
%

In the view mode the results of the query are shown.

Hierarchy Table Example#

Demo - Simpsons

SELECT (SAMPLE(?sub) as ?sub) (SAMPLE(?par) as ?par) (SAMPLE(?name) as ?name) ?concept
WHERE {
  {
    # bind si:abraham as root node
    BIND (si:abraham as ?sub) .  
  }
  UNION
  {
    # collect all parent child relations (will be conntected automagically to si:abraham)
    ?sub si:parent ?par ;
  }
  # display name and concept as table columns
  ?sub  rdfs:label ?name .
  BIND (?sub as ?concept) .
} GROUP BY ?concept

See also#

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This page (revision-30) was last changed on 20-Mar-2018 09:23 by Joba Baumeister