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[yaffs-website] / web / core / lib / Drupal / Core / Lock / PersistentDatabaseLockBackend.php

diff --git a/web/core/lib/Drupal/Core/Lock/PersistentDatabaseLockBackend.php b/web/core/lib/Drupal/Core/Lock/PersistentDatabaseLockBackend.php
new file mode 100644 (file)
index 0000000..eba5c47
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+++ b/web/core/lib/Drupal/Core/Lock/PersistentDatabaseLockBackend.php
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+<?php
+
+namespace Drupal\Core\Lock;
+
+use Drupal\Core\Database\Connection;
+
+/**
+ * Defines the persistent database lock backend. This backend is global for this
+ * Drupal installation.
+ *
+ * @ingroup lock
+ */
+class PersistentDatabaseLockBackend extends DatabaseLockBackend {
+
+  /**
+   * Constructs a new PersistentDatabaseLockBackend.
+   *
+   * @param \Drupal\Core\Database\Connection $database
+   *   The database connection.
+   */
+  public function __construct(Connection $database) {
+    // Do not call the parent constructor to avoid registering a shutdown
+    // function that releases all the locks at the end of a request.
+    $this->database = $database;
+    // Set the lockId to a fixed string to make the lock ID the same across
+    // multiple requests. The lock ID is used as a page token to relate all the
+    // locks set during a request to each other.
+    // @see \Drupal\Core\Lock\LockBackendInterface::getLockId()
+    $this->lockId = 'persistent';
+  }
+
+}