protected DatabaseLockBackend::ensureTableExists()
Check if the semaphore table exists and create it if not.
File
- core/lib/Drupal/Core/Lock/DatabaseLockBackend.php, line 170
Class
- DatabaseLockBackend
- Defines the database lock backend. This is the default backend in Drupal.
Namespace
Drupal\Core\Lock
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | protected function ensureTableExists() { try { $database_schema = $this ->database->schema(); if (! $database_schema ->tableExists( static ::TABLE_NAME)) { $schema_definition = $this ->schemaDefinition(); $database_schema ->createTable( static ::TABLE_NAME, $schema_definition ); return TRUE; } } // If another process has already created the semaphore table, attempting to // recreate it will throw an exception. In this case just catch the // exception and do nothing. catch (SchemaObjectExistsException $e ) { return TRUE; } return FALSE; } |
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