public function Schema::renameTable

Rename a table.

Parameters

$table: The table to be renamed.

$new_name: The new name for the table.

Throws

Drupal\Core\Database\SchemaObjectDoesNotExistException If the specified table doesn't exist.

Drupal\Core\Database\SchemaObjectExistsException If a table with the specified new name already exists.

Overrides Schema::renameTable

File

drupal/core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php, line 238

Definition of Drupal\Core\Database\Driver\sqlite\Schema

Class

Schema

Namespace

Code

public function renameTable($table, $new_name) {
  if (!$this
    ->tableExists($table)) {
    throw new SchemaObjectDoesNotExistException(t("Cannot @ename @table to @table_new: table @table doesn't exist.", array(
      '@table' => $table,
      '@table_new' => $new_name,
    )));
  }
  if ($this
    ->tableExists($new_name)) {
    throw new SchemaObjectExistsException(t("Cannot rename @table to @table_new: table @table_new already exists.", array(
      '@table' => $table,
      '@table_new' => $new_name,
    )));
  }
  $schema = $this
    ->introspectSchema($table);

  // SQLite doesn't allow you to rename tables outside of the current
  // database. So the syntax '...RENAME TO database.table' would fail.
  // So we must determine the full table name here rather than surrounding
  // the table with curly braces incase the db_prefix contains a reference
  // to a database outside of our existsing database.
  $info = $this
    ->getPrefixInfo($new_name);
  $this->connection
    ->query('ALTER TABLE {' . $table . '} RENAME TO ' . $info['table']);

  // Drop the indexes, there is no RENAME INDEX command in SQLite.
  if (!empty($schema['unique keys'])) {
    foreach ($schema['unique keys'] as $key => $fields) {
      $this
        ->dropIndex($table, $key);
    }
  }
  if (!empty($schema['indexes'])) {
    foreach ($schema['indexes'] as $index => $fields) {
      $this
        ->dropIndex($table, $index);
    }
  }

  // Recreate the indexes.
  $statements = $this
    ->createIndexSql($new_name, $schema);
  foreach ($statements as $statement) {
    $this->connection
      ->query($statement);
  }
}