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<?php
namespace PPP\Wikidata\ValueFormatters;
use DataValues\DataValue;
use InvalidArgumentException;
use OutOfBoundsException;
use PPP\Wikidata\Cache\JsonLdDataValueFormatterCache;
use PPP\Wikidata\ValueFormatters\JsonLd\JsonLdDataValueFormatter;
/**
* Adds a cache level on top of JsonLdDataValueFormatter
*
* @licence GPLv2+
* @author Thomas Pellissier Tanon
*/
class CachedJsonLdDataValueFormatter implements JsonLdDataValueFormatter {
* @var JsonLdDataValueFormatter
private $formatter;
* @var JsonLdDataValueFormatterCache
private $cache;
public function __construct(JsonLdDataValueFormatter $formatter, JsonLdDataValueFormatterCache $cache) {
$this->formatter = $formatter;
$this->cache = $cache;
}
* @see ValueFormatter::format
public function format($value) {
if(!($value instanceof DataValue)) {
throw new InvalidArgumentException('$value is not a DataValue.');
try {
return $this->cache->fetch($value);
} catch(OutOfBoundsException $e) {
$jsonLd = $this->formatter->format($value);
$this->cache->save($value, $jsonLd);
return $jsonLd;
ProjetPP /
PPP-Wikidata
