From 0fb7603b58a35f1c00f4c2afd8f49e57270e7f24 Mon Sep 17 00:00:00 2001
From: Mathew Sutcliffe <oktal3700@gmail.com>
Date: Tue, 23 Aug 2016 17:10:03 +0100
Subject: [PATCH] refs #721 JSON performance samples.

---
 samples/blackmisc/main.cpp               |  2 ++
 samples/blackmisc/samplesperformance.cpp | 16 ++++++++++++++++
 samples/blackmisc/samplesperformance.h   |  3 +++
 3 files changed, 21 insertions(+)

diff --git a/samples/blackmisc/main.cpp b/samples/blackmisc/main.cpp
index 87bdeef27..dc85c2382 100644
--- a/samples/blackmisc/main.cpp
+++ b/samples/blackmisc/main.cpp
@@ -48,6 +48,7 @@ int main(int argc, char *argv[])
         qtout << "6b .. 25/100 Performance impl. type" << endl;
         qtout << "6c .. 25/20 Performance impl. type" << endl;
         qtout << "6d .. 40/20 Interpolator scenario" << endl;
+        qtout << "6e .. JSON performance" << endl;
         qtout << "7 .. Algorithms" << endl;
         qtout << "-----" << endl;
         qtout << "x .. Bye" << endl;
@@ -61,6 +62,7 @@ int main(int argc, char *argv[])
         else if (s.startsWith("6b")) { CSamplesPerformance::samplesImplementationType(qtout, 25, 100); }
         else if (s.startsWith("6c")) { CSamplesPerformance::samplesImplementationType(qtout, 25, 20); }
         else if (s.startsWith("6d")) { CSamplesPerformance::interpolatorScenario(qtout, 40, 20); }
+        else if (s.startsWith("6e")) { CSamplesPerformance::samplesJson(qtout); }
         else if (s.startsWith("7")) { CSamplesAlgorithm::samples(); }
         else if (s.startsWith("x")) { break; }
     }
diff --git a/samples/blackmisc/samplesperformance.cpp b/samples/blackmisc/samplesperformance.cpp
index 1292e3ea1..c5a65c51d 100644
--- a/samples/blackmisc/samplesperformance.cpp
+++ b/samples/blackmisc/samplesperformance.cpp
@@ -324,6 +324,22 @@ namespace BlackSample
         return 0;
     }
 
+    int CSamplesPerformance::samplesJson(QTextStream &out)
+    {
+        QTime timer;
+        auto situations = createSituations(0, 10000, 10);
+
+        timer.start();
+        QString s = situations.toJsonString();
+        out << "Convert 100,000 aircraft situations to JSON:   " << timer.elapsed() << "ms" << endl;
+
+        timer.start();
+        situations.convertFromJson(s);
+        out << "Convert 100,000 aircraft situations from JSON: " << timer.elapsed() << "ms" << endl << endl;
+
+        return 0;
+    }
+
     CAircraftSituationList CSamplesPerformance::createSituations(qint64 baseTimeEpoch, int numberOfCallsigns, int numberOfTimes)
     {
         CAircraftSituationList situations;
diff --git a/samples/blackmisc/samplesperformance.h b/samples/blackmisc/samplesperformance.h
index df0756c23..f1d5e5a2c 100644
--- a/samples/blackmisc/samplesperformance.h
+++ b/samples/blackmisc/samplesperformance.h
@@ -35,6 +35,9 @@ namespace BlackSample
         //! Interpolator scenario
         static int interpolatorScenario(QTextStream &out, int numberOfCallsigns, int numberOfTimes);
 
+        //! JSON (de)serialization
+        static int samplesJson(QTextStream &out);
+
         //! Situation values for testing
         static BlackMisc::Aviation::CAircraftSituationList createSituations(qint64 baseTimeEpoch, int numberOfCallsigns, int numberOfTimes);