class method self.parse_sqlite_config!

# File activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb, line 28
        def parse_sqlite_config!(config)
          config[:database] ||= config[:dbfile]
          # Require database.
          unless config[:database]
            raise ArgumentError, "No database file specified. Missing argument: database"
          end

          # Allow database path relative to RAILS_ROOT, but only if
          # the database path is not the special path that tells
          # Sqlite to build a database only in memory.
          if Object.const_defined?(:RAILS_ROOT) && ':memory:' != config[:database]
            config[:database] = File.expand_path(config[:database], RAILS_ROOT)
          end
        end