Removed DB specific get api's from Selectable class (PR #378)

on sonic-swss-common

With the change as part of #378 caclmgrd need to be updated
to use new client side Get API to access namespace.

Signed-off-by: Abhishek Dosi <abdosi@microsoft.com>

files/image_config/caclmgrd/caclmgrd

@@ -476,12 +476,14 @@ class ControlPlaneAclManager(object):
 
  # Loop on select to see if any event happen on config db of any namespace
  while True:
- (state, c) = sel.select(SELECT_TIMEOUT_MS)
+ (state, selectableObj) = sel.select(SELECT_TIMEOUT_MS)
  # Continue if select is timeout or selectable object is not return
  if state != swsscommon.Select.OBJECT:
  continue
- # Get the corresponding namespace from selectable object
- namespace = c.getDbNamespace()
+ # Get the redisselect object from selectable object
+ redisSelectObj = swsscommon.CastSelectableToRedisSelectObj(selectableObj)
+ # Get the corresponding namespace from redisselect db connector object
+ namespace = redisSelectObj.getDbConnector().getNamespace()
  # Pop data of both Subscriber Table object of namespace that got config db acl table event
  for table in config_db_subscriber_table_map[namespace]:
  table.pop()