Look up a session by id and unmarshal
its data if
found.
# File activerecord/lib/active_record/session_store.rb, line 222
def find_by_session_id(session_id)
if record = connection.select_one("SELECT * FROM #{@@table_name} WHERE #{@@session_id_column}=#{connection.quote(session_id)}")
new(:session_id => session_id, :marshaled_data => record['data'])
end
end