BIND 10 #1258: "preserve order" option for Message::fromWire()

[BIND 10 Development]

#1258: "preserve order" option for Message::fromWire()
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                   Reporter:         |                 Owner:  jinmei
  jinmei                             |                Status:  accepted
                       Type:  task   |             Milestone:
                   Priority:         |  Sprint-20111011
  blocker                            |            Resolution:
                  Component:         |             Sensitive:  0
  libdns++                           |           Sub-Project:  DNS
                   Keywords:         |  Estimated Difficulty:  0
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Comment (by jinmei):

 Branch trac1258 is ready for review.

 I believe it's straightforward and non controversial.  Since the main
 part is simple, I've made some improvements to fromwire that are not
 directly related to the task subject: adding some more basic tests
 (the message class still lacks many tests and we should gradually improve
 the
 situation anyway), making the python wrapper code safer and (IMO) cleaner
 by catching exceptions/error cases more and avoiding unnecessary
 reinterpret_cast.

 Also, as a result of adding new tests I've effectively addressed #927,
 too.
 So, I plan to close that ticket once this one is merged.

 This feature itself is a separate functionality, so I propose adding
 a changelog entry for this ticket:
 {{{
 288.?   [func]          jinmei
         libdns++/pydnspp: added an option parameter to the "from wire"
         methods of the Message class.  One option is defined,
         PRESERVE_ORDER, which specifies the parser to handle each RR
         separately, preserving the order, and construct RRsets in the
         message sections so that each RRset contains only one RR.
         (Trac #1258, git TBD)
 }}}

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Ticket URL: <http://bind10.isc.org/ticket/1258#comment:2>
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