[1607] added an empty implementation of Context::getAdditional().

for now, just to make it compile.

src/lib/datasrc/Makefile.am

@@ -23,7 +23,7 @@ libdatasrc_la_SOURCES += query.h query.cc
 libdatasrc_la_SOURCES += cache.h cache.cc
 libdatasrc_la_SOURCES += rbtree.h
 libdatasrc_la_SOURCES += zonetable.h zonetable.cc
-libdatasrc_la_SOURCES += zone.h
+libdatasrc_la_SOURCES += zone.h zone_finder_context.cc
 libdatasrc_la_SOURCES += result.h
 libdatasrc_la_SOURCES += logger.h logger.cc
 libdatasrc_la_SOURCES += client.h iterator.h

src/lib/datasrc/zone_finder_context.cc

@@ -0,0 +1,37 @@
+// Copyright (C) 2012  Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+#include <dns/rdata.h>
+#include <dns/rrset.h>
+#include <dns/rrtype.h>
+
+#include <datasrc/zone.h>
+
+#include <vector>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+
+namespace isc {
+namespace datasrc {
+
+void
+ZoneFinder::Context::getAdditional(const vector<RRType>& /*requested_types*/,
+                                   vector<ConstRRsetPtr>& /*result*/)
+{
+}
+
+} // namespace datasrc
+} // datasrc isc