Cosmo user preferences

Big idea

User preferences are a bag of key value pairs that can be get, set and removed by a client. They will not be validated in any way on the server side, and therefore should not be used for sensitive operations like security.

Database design

• Key value pairs stored in a new table
• Maximum length for preference key or value: 255 chars
• Maximum number of preferences: 255 per user

Model design

• New methods:
  • User.getPreferences(Set keys)
  • User.setPreferences(Map keyValuePairs)
  • User.getPreference(String key)
  • User.setPreference(String key, String value)
  • User.removePreference(String key)

RPC design

• New methods:
  • RPCService.getPreferences(String username, Set keys) (Bobby, is this possible?)
  • RPCService.setPreferences(String username, Map keyValuePairs)
• Old methods that need to be verified or fixed:
  • RPCService.getPreference(String username, String key)
  • RPCService.setPreference(String username, String key, String value)
  • RPCService.removePreference(String username, String key)

-- TravisVachon - 13 Jan 2007