/**
* Check that the post is referencing the related entities.
*
* @param int $post_id The post ID.
*/
function checkPostReferences($post_id)
{
// Get the post.
$post = get_post($post_id);
$this->assertNotNull($post);
// Get the post Redlink URI.
$uri = wordlift_esc_sparql(wl_get_entity_uri($post->ID));
// Prepare the SPARQL query to select label and URL.
$sparql = "SELECT DISTINCT ?uri WHERE { <{$uri}> dct:references ?uri . }";
// Send the query and get the response.
$response = rl_sparql_select($sparql);
$this->assertFalse(is_wp_error($response));
$body = $response['body'];
$matches = array();
$count = preg_match_all('/^(?P<uri>[^\\r]*)/im', $body, $matches, PREG_SET_ORDER);
$this->assertTrue(is_numeric($count));
$entity_ids = wl_core_get_related_entity_ids($post->ID);
// wl_write_log( "[ entity IDs :: " . join( ', ', $entity_ids ) . " ][ size of entity IDs :: " . sizeof( $entity_ids ) . " ][ count :: $count ][ post ID :: $post->ID ]" );
//
// if ( $count !== ( 1 + sizeof( $entity_ids ) ) ) {
// wl_write_log( "[ sparql :: $sparql ][ body :: $body ]" );
// }
// Expect only one match (headers + expected entities).
$this->assertEquals($count, sizeof($entity_ids) + 1);
$entity_uris = wl_post_ids_to_entity_uris($entity_ids);
for ($i = 1; $i < $count; $i++) {
$entity_uri = $matches[$i]['uri'];
// Check that the URI is in the array.
$this->assertTrue(in_array($entity_uri, $entity_uris));
}
}
/**
* Count the number of triples in the dataset.
* @return array|WP_Error|null An array if successful, otherwise WP_Error or NULL.
*/
function rl_count_triples()
{
// Set the SPARQL query.
$sparql = 'SELECT (COUNT(DISTINCT ?s) AS ?subjects) (COUNT(DISTINCT ?p) AS ?predicates) (COUNT(DISTINCT ?o) AS ?objects) ' . 'WHERE { ?s ?p ?o }';
// Send the request.
$response = rl_sparql_select($sparql);
// Return the error in case of failure.
if (is_wp_error($response) || 200 !== (int) $response['response']['code']) {
$body = is_wp_error($response) ? $response->get_error_message() : $response['body'];
wl_write_log("rl_count_triples : error [ url :: {$url} ][ response :: ");
wl_write_log("\n" . var_export($response, true));
wl_write_log("][ body :: ");
wl_write_log("\n" . $body);
wl_write_log("]");
return $response;
}
// Get the body.
$body = $response['body'];
// Get the values.
$matches = array();
if (1 === preg_match('/(\\d+),(\\d+),(\\d+)/im', $body, $matches) && 4 === count($matches)) {
// Return the counts.
return array('subjects' => (int) $matches[1], 'predicates' => (int) $matches[2], 'objects' => (int) $matches[3]);
}
// No digits found in the response, return null.
wl_write_log("rl_count_triples : unrecognized response [ body :: {$body} ]");
return null;
}
function getPostTriples($post_id)
{
// Get the post Redlink URI.
$uri = wl_get_entity_uri($post_id);
$uri_esc = wordlift_esc_sparql($uri);
// Prepare the SPARQL query to select label and URL.
$sparql = "SELECT DISTINCT ?p ?o WHERE { <{$uri_esc}> ?p ?o . }";
// Send the query and get the response.
$response = rl_sparql_select($sparql);
$this->assertFalse(is_wp_error($response));
$lines = array();
foreach (explode("\n", $response['body']) as $line) {
if (empty($line)) {
continue;
}
$lines[] = preg_replace('/\\s+/', '', $line);
}
return $lines;
}