text: """
  Copyright (c) 2016-2020 Keith Sterling http://www.keithsterling.com
  
  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
  documentation files (the "Software"), to deal in the Software without restriction, including without limitation
  the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
  Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
  THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  """
  from programy.storage.stores.sql.store.sqlstore import SQLStore
  from programy.storage.entities.linked import LinkedAccountStore
  from programy.storage.stores.sql.dao.linked import LinkedAccount
  from programy.utils.logging.ylogger import YLogger
  
  
  class SQLLinkedAccountStore(SQLStore, LinkedAccountStore):
  
      def __init__(self, storage_engine):
          SQLStore.__init__(self, storage_engine)
          LinkedAccountStore.__init__(self)
  
      def _get_all(self):
          return self._storage_engine.session.query(LinkedAccount)
  
      def empty(self):
          self._get_all().delete()
  
      def link_accounts(self, primary_userid, linked_userid):
          shared = LinkedAccount(primary_user=primary_userid, linked_user=linked_userid)
          self._storage_engine.session.add(shared)
          return shared
  
      def unlink_accounts(self, primary_userid):
          self._storage_engine.session.query(LinkedAccount).filter(
              LinkedAccount.primary_user == primary_userid).delete()
          return True
  
      def linked_accounts(self, primary_userid):
          db_accounts = self._storage_engine.session.query(LinkedAccount).filter(
              LinkedAccount.primary_user == primary_userid)
          accounts = []
          for account in db_accounts:
              accounts.append(account.linked_user)
  
          return accounts
  
      def primary_account(self, linked_userid):
          try:
              db_account = self._storage_engine.session.query(LinkedAccount).filter(
                  LinkedAccount.linked_user == linked_userid).one()
              return db_account.primary_user
  
          except Exception as excep:
              YLogger.exception_nostack(self, "Failed to find priamry account for userid [%s]", excep, linked_userid)
  
          return None
  