VOS.VirtBulkRDFLoaderExampleSingle

Example for Single RDF Source File Upload

The following example demonstrates how to upload single RDF source file using the Bulk Loading Sequence.

Assuming there is a folder with name "tmp" in your FS and it is under a directory specified in the DirsAllowed param defined in your virtuoso ini file.

Also assume in the folder "tmp" there is a file named "kidehen.n3" that contains:


<http://www.openlinksw.com/dataspace/kidehen@openlinksw.com#this> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://rdfs.org/sioc/ns#User> .
<http://www.openlinksw.com/dataspace/kidehen@openlinksw.com#this> <http://www.w3.org/2000/01/rdf-schema#label> 	"Kingsley" .
<http://www.openlinksw.com/dataspace/kidehen@openlinksw.com#this> <http://rdfs.org/sioc/ns#creator_of> <http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1300> .

Make sure the Bulk Loading script is executed.

Register the file "kidehen.n3" with graph IRI "http://kidehen.com#":


SQL>ld_dir ('tmp', 'kidehen.n3', 'http://kidehen.com#');
Done. -- 90 msec.

Create in the "tmp" folder an empty file with name: kidehen.ext.graph
Edit the kidehen.ext.graph by adding the graph IRI, so the content of the file to be:
```
http://kidehen.com#
```

Finally execute:


SQL>rdf_loader_run ();
Done. -- 100 msec.

As result on the Server console should be shown notification for the loading is complete:


10:21:50 PL LOG: Loader started
10:21:50 PL LOG: No more files to load. Loader has finished,

To check the inserted triples for the given graph, execute:


SQL>SPARQL
SELECT * 
FROM <http://kidehen.com#>
WHERE 
  {
    ?s ?p ?o
  }
;
  
s                                                                 p                                                 o
VARCHAR                                                           VARCHAR                                           VARCHAR
_______________________________________________________________________________
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com#this   http://www.w3.org/1999/02/22-rdf-syntax-ns#type   http://rdfs.org/sioc/ns#User
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com#this   http://www.w3.org/2000/01/rdf-schema#label        Kingsley
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com#this   http://rdfs.org/sioc/ns#creator_of                http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1300

3 Rows. -- 10 msec.