add manual variants for jackson/json as well to see overhead of databind

Author: cowtowncoder

src/main/java/com/cowtowncoder/jsonperf/dzone/MeasurementPOJO.java

@@ -1,7 +1,10 @@
 package com.cowtowncoder.jsonperf.dzone;
 
 import com.dslplatform.json.CompiledJson;
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.io.SerializedString;
 
+import java.io.IOException;
 import java.util.List;
 
 /**
@@ -11,6 +14,8 @@
 @CompiledJson
 public class MeasurementPOJO
 {
+    private final static SerializedString PROP_ITEMS = new SerializedString("items");
+
     public List<MeasurementRecord> items;
 
     public MeasurementPOJO() { }
@@ -42,4 +47,16 @@ public String asJSON()
         }
         return sb.toString();
     }
+
+    public void writeTo(JsonGenerator gen) throws IOException
+    {
+        gen.writeStartObject();
+        gen.writeFieldName(PROP_ITEMS);
+        gen.writeStartArray();
+        for (int i = 0, end = items.size(); i < end; ++i) {
+            items.get(i).writeTo(gen);
+        }
+        gen.writeEndArray();
+        gen.writeEndObject();
+    }
 }

src/main/java/com/cowtowncoder/jsonperf/dzone/MeasurementRecord.java

@@ -4,6 +4,8 @@
 import java.util.*;
 
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.io.SerializedString;
 
 /**
  * Main test item. Contains both fields and getters/setters, given that different
@@ -13,6 +15,11 @@
 @JsonPropertyOrder({ "measurementId", "type", "duration", "time" })
 public class MeasurementRecord
 {
+    private final static SerializedString PROP_MEASUREMENT_ID = new SerializedString("measurementId");
+    private final static SerializedString PROP_TYPE = new SerializedString("type");
+    private final static SerializedString PROP_DURATION = new SerializedString("duration");
+    private final static SerializedString PROP_TIME = new SerializedString("time");
+
     public String measurementId;
     public MeasurementType type;
 
@@ -63,4 +70,18 @@ public void appendAsJSON(Appendable target) throws IOException
                 measurementId, type.name(), duration, time
                 ));
     }
+
+    public void writeTo(JsonGenerator gen) throws IOException
+    {
+        gen.writeStartObject();
+        gen.writeFieldName(PROP_MEASUREMENT_ID);
+        gen.writeString(measurementId);
+        gen.writeFieldName(PROP_TYPE);
+        gen.writeString(type.name());
+        gen.writeFieldName(PROP_DURATION);
+        gen.writeNumber(duration);
+        gen.writeFieldName(PROP_TIME);
+        gen.writeNumber(time);
+        gen.writeEndObject();
+    }
 }

src/main/java/com/cowtowncoder/jsonperf/dzone/write/DZoneManualWJackson.java

@@ -0,0 +1,62 @@
+package com.cowtowncoder.jsonperf.dzone.write;
+
+import java.io.OutputStream;
+import java.io.Writer;
+import java.util.concurrent.TimeUnit;
+
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.State;
+
+import com.cowtowncoder.jsonperf.dzone.DZoneWriteTestBase;
+import com.cowtowncoder.jsonperf.dzone.MeasurementPOJO;
+
+import com.fasterxml.jackson.core.*;
+import com.fasterxml.jackson.core.io.SegmentedStringWriter;
+import com.fasterxml.jackson.core.util.BufferRecycler;
+
+@State(Scope.Thread)
+@OutputTimeUnit(TimeUnit.SECONDS)
+public class DZoneManualWJackson extends DZoneWriteTestBase
+{
+    private final JsonFactory _jsonFactory;
+    private final SegmentedStringWriter _writer;
+
+    public DZoneManualWJackson()
+    {
+        _jsonFactory = new JsonFactory();
+        _writer = new SegmentedStringWriter(new BufferRecycler());
+    }
+
+    @Override
+    public int _writeItems(MeasurementPOJO items, OutputStream out) throws Exception
+    {
+        int count = 0;
+        try (JsonGenerator g = _jsonFactory.createGenerator(out)) {
+            items.writeTo(g);
+            count = items.size();
+        }
+        return count;
+    }
+
+    @Override
+    public int _writeItems(MeasurementPOJO items, Writer out) throws Exception
+    {
+        int count = 0;
+        try (JsonGenerator g = _jsonFactory.createGenerator(out)) {
+            items.writeTo(g);
+            count = items.size();
+        }
+        return count;
+    }
+    
+    
+    @Override
+    public String _writeAsString(MeasurementPOJO items) throws Exception
+    {
+        try (JsonGenerator g = _jsonFactory.createGenerator(_writer)) {
+            items.writeTo(g);
+            return _writer.getAndClear();
+        }
+    }
+}