BIND 10 #1206: Create datasource factory

[BIND 10 Development]

#1206: Create datasource factory
-------------------------------------+-------------------------------------
                   Reporter:         |                 Owner:
  stephen                            |                Status:  new
                       Type:  task   |             Milestone:
                   Priority:  major  |  Sprint-20110927
                  Component:  data   |            Resolution:
  source                             |             Sensitive:  0
                   Keywords:         |           Sub-Project:  DNS
            Defect Severity:  N/A    |  Estimated Difficulty:  4
Feature Depending on Ticket:         |           Total Hours:  0
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
-------------------------------------+-------------------------------------

Comment (by jelte):

 The way I figure dynamic loading would work is that you specify a .so
 filename (or a filename that is automatically mapped to that .so filename,
 e.g. by adding _datasrc.so), and that would then be all the mapping would
 need; the .so is found, called, and initialized through some predefined
 functions. We get a bunch of .so files that all have the exact same
 external interface, and no specific mapping from name to class/function
 should be needed.

 This is indeed mostly orthogonal from the factory-API-side (the API for
 the factory should not need much changes, if any, for either way). It is a
 nontrivial task though :) (the accessor API will need a bit of tweaking,
 see also the notes from yesterday:
 http://bind10.isc.org/wiki/WeeklyMinutes20110920)

-- 
Ticket URL: <http://bind10.isc.org/ticket/1206#comment:4>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development