BIND 10 #1604: reorganize RRset class hierarchy to allow further optimization

[BIND 10 Development]

#1604: reorganize RRset class hierarchy to allow further optimization
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                   Reporter:         |                 Owner:  vorner
  jinmei                             |                Status:  reviewing
                       Type:  task   |             Milestone:
                   Priority:  major  |  Sprint-20120207
                  Component:         |            Resolution:
  libdns++                           |             Sensitive:  0
                   Keywords:         |           Sub-Project:  DNS
            Defect Severity:  N/A    |  Estimated Difficulty:  5
Feature Depending on Ticket:  auth   |           Total Hours:  0
  performance                        |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Changes (by stephen):

 * owner:  stephen => vorner


Comment:

 Branch trac1604b has been updated:

 > Throwing !NotImplemented
 getRRsig() now returns an RRsetPtr().  The !BasicRRset::addRRsig() methods
 still throw !NotImplemented (on the grounds that it is better to throw an
 exception than to mistakenly call addRRsig() and have it do nothing).

 > passing the argument as {{{const ConstXxxxPtr&}}}
 All addRRsig() variants pass the signatures via {{{const Xxxx&}}}.

 > For a longer term, I personally think it's better to include the concept
 of the signature at the top level.
 In that case, perhaps we should create a ticket to merge BasicRRset and
 RRset.

 > But I think it should be the „[func]*“ category (backward incompatible).
 Will do that when I update the !ChangeLog.

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Ticket URL: <http://bind10.isc.org/ticket/1604#comment:11>
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