1 files changed, 35 insertions, 0 deletions

diff --git a/vendor/doctrine/orm/src/Utility/LockSqlHelper.php b/vendor/doctrine/orm/src/Utility/LockSqlHelper.php
new file mode 100644
index 0000000..7d135eb
--- /dev/null
+++ b/vendor/doctrine/orm/src/Utility/LockSqlHelper.php
@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\ORM\Utility;
+
+use Doctrine\DBAL\Platforms\AbstractMySQLPlatform;
+use Doctrine\DBAL\Platforms\AbstractPlatform;
+use Doctrine\DBAL\Platforms\DB2Platform;
+use Doctrine\DBAL\Platforms\PostgreSQLPlatform;
+use Doctrine\DBAL\Platforms\SQLitePlatform;
+use Doctrine\DBAL\Platforms\SQLServerPlatform;
+
+/** @internal */
+trait LockSqlHelper
+{
+    private function getReadLockSQL(AbstractPlatform $platform): string
+    {
+        return match (true) {
+            $platform instanceof AbstractMySQLPlatform => 'LOCK IN SHARE MODE',
+            $platform instanceof PostgreSQLPlatform => 'FOR SHARE',
+            default => $this->getWriteLockSQL($platform),
+        };
+    }
+
+    private function getWriteLockSQL(AbstractPlatform $platform): string
+    {
+        return match (true) {
+            $platform instanceof DB2Platform => 'WITH RR USE AND KEEP UPDATE LOCKS',
+            $platform instanceof SQLitePlatform,
+            $platform instanceof SQLServerPlatform => '',
+            default => 'FOR UPDATE',
+        };
+    }
+}