[FELIX-3577] Refactor helpers and service trackers

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: configadmin-1.4.0
• Fix Version/s: configadmin-1.6.0
• Component/s: Configuration Admin
• Assignee: Felix Meschberger
• Reporter: Felix Meschberger
• Created: 02/Jul/12 13:30
• Updated: 29/Oct/12 11:57
• Resolved: 05/Jul/12 17:51

Description

The ConfigurationManager class currently hosts quite a number of inner classes to help with its tasks. A few of these classes have overlapping functionality which makes it hard to easily implement targeted PIDs these functionalities should be better aligned:

• ManagedService[Factory]Tracker don't really get the services but maintain a map of PIDs and assigned
  configurations (most importantly the targeted PID and configuration modification counter)
• ManagedService[Factory] callbacks are also executed by the tracker classes
• The ManagedService[Factory]Helper classes are renamed to [Factory]ConfigurationHelper since
  they are helpers to convey configuration to ManagedService[Factory] services through the respective
  trackers.
• The ServiceHolder class is replaced by the ConfigurationMap class managed by the trackers.

Issue Links

• blocks: FELIX-3481 [Config Admin 1.5] Implement support for Targeted PIDs
• breaks: FELIX-3721 Configuration not always provided upon initial service registration
• relates to: FELIX-3554 Prevent same configuration to be delivered multiple times