Commit ed2adc06 authored by JINMEI Tatuya's avatar JINMEI Tatuya
Browse files

[2310] added some implementation notes as comment for in-memory findAtOrigin.

parent 4760fba1
......@@ -765,6 +765,16 @@ InMemoryZoneFinder::findAll(const isc::dns::Name& name,
options))));
}
// The implementation is a special case of the generic findInternal: we know
// the qname should have an "exact match" and its node is accessible via
// getOriginNode(); and, since there should be at least SOA RR at the origin
// the case of CNAME can be eliminated (these should be guaranteed at the load
// or update time, but even if they miss a corner case and allows a CNAME to
// be added at origin, the zone is broken anyway, so we'd just let this
// method return garbage, too). As a result, there can be only too cases
// for the result codes: SUCCESS if the requested type of RR exists; NXRRSET
// otherwise. Due to its simplicity we implement it separately, rather than
// sharing the code with findInternal.
boost::shared_ptr<ZoneFinder::Context>
InMemoryZoneFinder::findAtOrigin(const isc::dns::RRType& type,
bool use_minttl,
......
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