<?php

class LODrStore {

	var $store;

	public function __construct() {
		$this->init();
	}
	
	public function do_query($query) {
		global $debug;
		$res = $this->store->query("
		PREFIX sioc: <http://rdfs.org/sioc/ns#>
		PREFIX dc: <http://purl.org/dc/elements/1.1/>
		PREFIX dct: <http://purl.org/dc/terms/>
		PREFIX tags: <http://www.holygoat.co.uk/owl/redwood/0.1/tags/>		
		PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>		
		PREFIX foaf: <http://xmlns.com/foaf/0.1/>
		PREFIX moat: <http://moat-project.org/ns#>
		PREFIX dbp: <http://dbpedia.org/property/>
		PREFIX content: <http://purl.org/rss/1.0/modules/content/>
		PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#>		
		$query
		");
		if($debug && $this->store->getErrors()) {
			print_r($this->store->errors);
			echo "***\nQuery = $query";
			die();
		}
		return $res;
	}

	private function init() {
		global $arc_config;
		$config = $arc_config + array(
			'sem_html_formats' => 'rdfa',
			'store_triggers_path' => dirname(__FILE__).'/triggers/',
			'store_triggers' => array(
	   			'insert' => array('graphTimestamp'),
				'load' => array('subPropertyInference'),
			),
		);
		$this->store = ARC2::getStore($config);
	}
	
	public function dump() {
		$query = "select ?g ?s ?p ?o where { graph ?g { ?s ?p ?o } } ";
		$res = $this->do_query($query);
		print_r($res);
		die();
	}
	
	public function setup() {
		global $user, $default_vocabs;
		// If the store exists - do not reset 
		if($this->store->isSetUp()) {
			echo "The store is already setup";
			die();
		}
		$this->store->reset();
		$this->store->setUp();
		// Load ontologies so that we can infer subproperties later
		foreach($default_vocabs as $vocab) {
			$graph = LODrTools::get_datagraph($vocab);
			$this->store->query("LOAD <$vocab> INTO <$graph>");
		}
		// Load user data
		$usergraph = LODrTools::get_datagraph($user);
		$this->store->query("LOAD <$user> INTO <$usergraph>");
	}

	public function endpoint() {
		global $arc_config;
		$config = $arc_config + array (
			'endpoint_features' => array(
				'select', 'construct', 'ask', 'describe'
			)
		);
		$ep = ARC2::getStoreEndpoint($config);
		$ep->go();
	}
 
}

?>