sdbImportDatabase function
Copy a database export (lines or map sembast export) to another
return the opened database
Implementation
Future<Database> sdbImportDatabase(
  Object data,
  IdbFactory dstFactory,
  String dstDbName,
) async {
  // if it is a sembast factory use it!
  // if (false) {
  if (dstFactory is IdbFactorySembast) {
    final sdbDb = await sembast.importDatabaseAny(
      data,
      dstFactory.sdbFactory,
      dstFactory.getDbPath(dstDbName),
    );
    return dstFactory.openFromSdbDatabase(sdbDb);
  } else {
    // import to a memory one
    final sdbDb = await sembast.importDatabaseAny(
      data,
      sembast.databaseFactoryMemory,
      _tempExportPath,
    );
    final tmpDb = await (idbFactoryMemory as IdbFactorySembast)
        .openFromSdbDatabase(sdbDb);
    final db = await copyDatabase(tmpDb, dstFactory, dstDbName);
    tmpDb.close();
    return db;
  }
}