diff core/modules/jsonapi/src/Revisions/VersionById.php @ 5:12f9dff5fda9 tip

Update to Drupal core 8.7.1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/jsonapi/src/Revisions/VersionById.php	Thu May 09 15:34:47 2019 +0100
@@ -0,0 +1,28 @@
+<?php
+
+namespace Drupal\jsonapi\Revisions;
+
+use Drupal\Core\Entity\EntityInterface;
+
+/**
+ * Defines a revision ID implementation for entity revision ID values.
+ *
+ * @internal JSON:API maintains no PHP API since its API is the HTTP API. This
+ *   class may change at any time and this will break any dependencies on it.
+ *
+ * @see https://www.drupal.org/project/jsonapi/issues/3032787
+ * @see jsonapi.api.php
+ */
+class VersionById extends NegotiatorBase implements VersionNegotiatorInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getRevisionId(EntityInterface $entity, $version_argument) {
+    if (!is_numeric($version_argument)) {
+      throw new InvalidVersionIdentifierException('The revision ID must be an integer.');
+    }
+    return $version_argument;
+  }
+
+}