<?php
// Include RAP
define("RDFAPI_INCLUDE_DIR", "./../api/");
include RDFAPI_INCLUDE_DIR . "RdfAPI.php";
//get a GraphSet from the ModelFactory
$graphset = ModelFactory::getNamedGraphSetMem('NGSet1');
// Create a new NamedGraphsMem
$graph1 = new NamedGraphMem(new Resource('http://graph1'));
$graph2 =& $graphset->createGraph(new Resource('http://graph2'));
//create Quads
$quad1 = new Quad(new Resource('http://graph3'), new Resource('http://subject1'), new Resource('http://predicate1'), new Resource('http://object1'));
$quad2 = new Quad(new Resource('http://graph3'), new Resource('http://subject2'), new Resource('http://predicate2'), new Resource('http://object2'));
$quad3 = new Quad(new Resource('http://graph4'), new Resource('http://subject3'), new Resource('http://predicate3'), new Resource('http://object3'));
$quad5 = new Quad(new Resource('http://graph4'), new Resource('http://subject5'), new Resource('http://predicate5'), new Resource('http://object5'));
//add Quads to the GraphSet. Thee needed NamedGraphs will be created automatically
$graphset->addQuad($quad1);
$graphset->addQuad($quad3);
$graphset->addQuad($quad2);
//add a NamedGraph to the Set
$graphset->addGraph($graph1);
//Is the Graph "http://graph1" part of the GraphSet?
echo '<b>Is the Graph "http://graph1" part of the GraphSet?</b><BR>';
var_dump($graphset->containsGraph(new Resource('http://graph1')));
echo '<p/>';
//remove 'http://graph2' from the set
$graphset->removeGraph(new Resource('http://graph2'));
//Is the Graph "http://graph2" part of the GraphSet?
echo '<b>Is the Graph "http://graph2" part of the GraphSet?</b><BR>';
var_dump($graphset->containsGraph(new Resource('http://graph2')));
echo '<p/>';
