/**
* Test adding a new prefix.
*/
function test_prefixes_add_and_delete()
{
// Create a random prefix and an example namespace.
$prefix = uniqid('prefix');
$namespace = 'http://example.org/ns/';
// Check that the prefix doesn't exist yet.
$this->assertFalse(wl_prefixes_get($prefix));
// Add the prefix.
wl_prefixes_add($prefix, $namespace);
$path = uniqid('this/is/a/test/');
// Compact a URL.
$url_to_compact = $namespace . $path;
$url_compacted = wl_prefixes_compact($url_to_compact);
$this->assertEquals($prefix . ':' . $path, $url_compacted);
// Expand a URL.
$url_to_expand = $url_compacted;
$url_expanded = wl_prefixes_expand($url_to_expand);
$this->assertEquals($namespace . $path, $url_expanded);
// Check the namespace.
$this->assertEquals($namespace, wl_prefixes_get($prefix));
// Now delete the prefix.
wl_prefixes_delete($prefix);
// Check that the prefix doesn't exist.
$this->assertFalse(wl_prefixes_get($prefix));
}
/**
* Get a property value using the specified name, language and graph. The property name can be a concatenated tree of
* keys, e.g. schema:location>schema:latitude.
*
* @param object $graph The graph.
* @param string $name The property tree.
* @param null|string $language If provided, a two-characters language code.
* @param string $suffix The suffix for remote requests (empty if not provided).
* @return null|string The value or null if not found.
*/
function wl_jsonld_get_property($graph, $name, $language = null, $suffix = '', $index = 0)
{
$keys = explode('>', html_entity_decode($name));
$value = null;
foreach ($keys as $key) {
if (null !== $value) {
$graph = wl_jsonld_load_remote($value . $suffix);
}
$key_exp = wl_prefixes_expand($key);
$value = wl_jsonld_get_property_value($graph, $key_exp, $language, $index);
}
return $value;
}