1 files changed, 15 insertions, 3 deletions
diff --git a/lib/private/Collaboration/Reference/LinkReferenceProvider.php b/lib/private/Collaboration/Reference/LinkReferenceProvider.php
index b4c44344476..0f3ff5f6732 100644
--- a/lib/private/Collaboration/Reference/LinkReferenceProvider.php
+++ b/lib/private/Collaboration/Reference/LinkReferenceProvider.php
@@ -44,12 +44,16 @@ class LinkReferenceProvider implements IReferenceProvider {
 		$this->systemConfig = $systemConfig;
 	}
 
-	public function resolveReference(string $referenceText): ?IReference {
+	public function matchReference(string $referenceText): bool {
 		if ($this->systemConfig->getValue('reference_opengraph', true) !== true) {
-			return null;
+			return false;
 		}
 
-		if (preg_match(self::URL_PATTERN, $referenceText)) {
+		return (bool)preg_match(self::URL_PATTERN, $referenceText);
+	}
+
+	public function resolveReference(string $referenceText): ?IReference {
+		if ($this->matchReference($referenceText)) {
 			$reference = new Reference($referenceText);
 			$this->fetchReference($reference);
 			return $reference;
@@ -87,4 +91,12 @@ class LinkReferenceProvider implements IReferenceProvider {
 			$reference->setImageUrl($object->images[0]->url);
 		}
 	}
+
+	public function isGloballyCachable(): bool {
+		return true;
+	}
+
+	public function getCacheKey(string $referenceId): string {
+		return '';
+	}
 }