Dev8D Examples

This page has examples of using the Graphite Library to work with the RDF Programme of Dev8D and Semantic Wiki RDF data.

Walk the Programme

This example walks through the entire RDF programme.

Code

<?php
include_once("arc/ARC2.php");
include_once("Graphite.php");
 
$graph = new Graphite( array(
	     "iswc" => "http://data.semanticweb.org/ns/swc/ontology#",
	      "cal" => "http://www.w3.org/2002/12/cal#",
	     "prog" => "http://programme.ecs.soton.ac.uk/2010/programme-schema#",
	    "dev8d" => "http://data.dev8d.org/2010/programme/dev8d_programme.rdf#",
	"dev8dwiki" => "http://wiki.2010.dev8d.org/w/Special:URIResolver/" ) );
$graph->load("http://data.dev8d.org/2010/programme/dev8d_programme.rdf"); 
 
$main_prog = $graph->primaryTopic();
print "<h1>".$main_prog->label()."</h1>";
print "<ul>";
foreach( $main_prog->all( "prog:hasSubProgramme" ) as $day_prog )
{
	print "<li>";
	print $day_prog->label();
	print "<ul><li>Timeslots<ul>";
	foreach( $day_prog->all( "prog:hasTimeSlot" ) as $time_slot )
	{
		print "<li>".$time_slot->get( "cal:summary" )."</li>";
	}
	print "</ul></li>";
	print "<li>Events<ul>";
	foreach( $day_prog->all( "prog:hasUnstreamedEvent", "prog:hasStreamedEvent" ) as $event)
	{
		print "<li>";
		print "<a href='$event'>".$event->get("cal:summary")."</a>";
		print "</li>";
	}
	print "</ul></li>";
 
	print "</ul>";
	print "</li>";
}
print "</ul>";
 
?>

Output

JISC Dev8D 2010 Programme

Wed 24th: Challenges Announced!
- Timeslots
  - Object id #25
  - Object id #25
  - Object id #25
  - Object id #25
  - Object id #25
  - Object id #25
  - Object id #25
  - Object id #25
  - Object id #25
- Events
Thu 25th: Cloud, Mobile, Learning Tools and Miscellaneous
- Timeslots
  - Object id #22
  - Object id #22
  - Object id #22
  - Object id #22
  - Object id #22
  - Object id #22
  - Object id #22
- Events
Fri 26th: Linked Data, Mashups and Miscellaneous
- Timeslots
  - Object id #15
  - Object id #15
  - Object id #15
  - Object id #15
  - Object id #15
  - Object id #15
- Events
Sat 27th: Finale!
- Timeslots
  - Object id #20
  - Object id #20
  - Object id #20
  - Object id #20
  - Object id #20
  - Object id #20
- Events

Link with Wiki RDF

This example starts with a session in the RDF programme, uses the rdf:sameAs to load info from the wiki, then walks through every talk in that session.

Code

<?php
include_once("arc/ARC2.php");
include_once("Graphite.php");
 
$graph = new Graphite( array(
	     "iswc" => "http://data.semanticweb.org/ns/swc/ontology#",
	      "cal" => "http://www.w3.org/2002/12/cal#",
	     "prog" => "http://programme.ecs.soton.ac.uk/2010/programme-schema#",
	    "dev8d" => "http://data.dev8d.org/2010/programme/dev8d_programme.rdf#",
    "dev8dwikiprop" => "http://wiki.2010.dev8d.org/w/Special:URIResolver/Property-3A",
	"dev8dwiki" => "http://wiki.2010.dev8d.org/w/Special:URIResolver/" ) );
$graph->load("http://data.dev8d.org/2010/programme/dev8d_programme.rdf"); 
 
$session_id = $_GET["session_id"];
if( $session_id == "" ) { $session_id = "dev8d:event-thu-1030-1300-expert"; }
 
$session = $graph->resource( $session_id );
$session->loadSameAs();
print "<ul>";
foreach( $session->all( "dev8dwiki:Property-3ATalk" ) as $talk )
{
	$talk->load();
	print "<li>";
	print $talk->get( "dev8dwikiprop:Title" );
	print "<ul>";
	print "<li>Speaker: ".join( ", ", $talk->all( "dev8dwikiprop:Speaker_Name"))."</li>";
	print "<li>Starts: ".$talk->get( "dev8dwikiprop:Begin_Time" )."</li>";
	print "<li>".$talk->get( "dev8dwikiprop:Description" )."</li>";
	print "</ul>";
	print "</li>";
}
print "</ul>";

Output

Notice: Undefined index: session_id in /var/ecsweb/sites/ecs.soton.ac.uk/graphite/htdocs/dev8d/linked.php on line 14

Are we ready for Cloud computing?
- Speaker:
- Starts: Object id #33
- Object id #33
Public Data and the Linked Data Cloud
- Speaker:
- Starts: Object id #37
- Object id #37
Web Security
- Speaker:
- Starts: Object id #41
- Object id #41
Stay the hell out of perl_lib
- Speaker:
- Starts: Object id #46
- Object id #46
Symbian Application Development
- Speaker:
- Starts: Object id #49
- Object id #49
iPhone and that other device...
- Speaker:
- Starts: Object id #53
- Object id #53
Android LiveWallpapers
- Speaker:
- Starts: Object id #57
- Object id #57
REPRAP 3D printer
- Speaker:
- Starts: Object id #61
- Object id #61
REPRAP 3D printer
- Speaker:
- Starts: Object id #65
- Object id #65
Emergence or Genetic Algorithms
- Speaker:
- Starts: Object id #69
- Object id #69