SPARQL.NET - A simple read-only SPARQL API
Features
- Based on RestSharp (http://restsharp.org) to deserialize XML into objects
- Can send SPARQL queries to a SPARQL enabled endpoints
- Parses the output from the endpoint into objects
- HTML table output
- Text table output
Examples
static void Main(string[] args)
{
//Set the endpoint
QueryClient client = new QueryClient("http://dbpedia.org/sparql");
//Create a query that finds people who were born in Berlin before 1900
QueryResult result = client.Query("PREFIX : <http://dbpedia.org/resource/>" +
"PREFIX dbo: <http://dbpedia.org/ontology/>" +
"SELECT ?name ?birth ?death ?person WHERE {" +
" ?person dbo:birthPlace :Berlin ." +
" ?person dbo:birthDate ?birth ." +
" ?person foaf:name ?name ." +
" ?person dbo:deathDate ?death ." +
" FILTER (?birth < \"1900-01-01\"^^xsd:date) ." +
"} ORDER BY ?birth LIMIT 10");
Console.WriteLine(result.GetOutput(OutputFormat.Text, 77));
}Output:
-----------------------------------------------------------------------------
| name | birth | death | person |
-----------------------------------------------------------------------------
|Dorothea of Bra...| 1420-02-09 | 1491-01-19 |http://dbpedia....|
|Anna of Branden...| 1487-08-27 | 1514-05-03 |http://dbpedia....|
|Sigismund Of Br...| 1538-12-11 | 1566-09-13 |http://dbpedia....|
|Erdmuthe of Bra...| 1561-06-26 | 1623-11-13 |http://dbpedia....|
|Sigismund, John...| 1572-11-08 | 1619-12-23 |http://dbpedia....|
|Magdalene of Br...| 1582-01-07 | 1616-05-04 |http://dbpedia....|
|Agnes of Brande...| 1584-07-17 | 1629-03-26 |http://dbpedia....|
|Margrave of Bra...| 1591-11-20 | 1615-11-29 |http://dbpedia....|
|Margravine Loui...| 1617-09-13 | 1676-08-29 |http://dbpedia....|
|Frederick William | 1620-02-16 | 1688-04-29 |http://dbpedia....|
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For more examples, take a look at the SPARQL.NET Client included in the project.