function backup_migrate_source_db::switch_db in Backup and Migrate 6.3

Switch to the current database. Pass true to switch back to the previous db.

3 calls to backup_migrate_source_db::switch_db()

backup_migrate_source_db::backup_to_file in includes/sources.db.inc

Backup from this source.

backup_migrate_source_db::get_table_names in includes/sources.db.inc

Get a list of tables in the database.

backup_migrate_source_db::restore_from_file in includes/sources.db.inc

Restore to this source.

File

includes/sources.db.inc, line 214

Functions to handle the direct to database destination.

Class

backup_migrate_source_db

A destination type for saving to a database server.

Code

function switch_db($switch_back = FALSE) {
  static $db_stack = array(), $db_url_stack = array();

  // If switch back is specified, pop the previous db and activate it.
  if ($switch_back && $db_stack) {

    // Reset the db_url.
    $GLOBALS['db_url'] = array_pop($db_url_stack);

    // Set the active db to the first one on the stack.
    db_set_active(array_pop($db_stack));
    return;
  }

  // If there is a valid DB URL, switch to it.
  if ($url = $this
    ->get_location()) {

    // Add the current db_url to the stack.
    $db_url_stack[] = $GLOBALS['db_url'];

    // Make the db_url into an array if needed.
    if (!is_array($GLOBALS['db_url'])) {
      $GLOBALS['db_url'] = array(
        'default' => $GLOBALS['db_url'],
      );
    }

    // Add the new db to the db_url array.
    $GLOBALS['db_url'][$url] = $url;

    // Switch to the new db and push the old one on the stack
    $db_stack[] = db_set_active($url);
  }
}