OFStatsReply custom serializer. Works for OFFlowStatsReply presently.

src/main/java/net/floodlightcontroller/core/web/OFStatsTypeStrings.java

+package net.floodlightcontroller.core.web;
+
+public class OFStatsTypeStrings {
+	public static final String AGGREGATE = "aggregate";
+	public static final String DESC = "desc";
+	public static final String EXPERIMENTER = "experimenter";
+	public static final String FLOW = "flow";
+	public static final String GROUP = "group";
+	public static final String GROUP_DESC = "group-desc";
+	public static final String GROUP_FEATURES = "group-features";
+	public static final String METER = "meter";
+	public static final String METER_CONFIG = "meter-config";
+	public static final String METER_FEATURES = "meter-features";
+	public static final String PORT = "port";
+	public static final String PORT_DESC = "port-desc";
+	public static final String QUEUE = "queue";
+	public static final String TABLE = "table";
+	public static final String TABLE_FEATURES = "table-features";
+	public static final String FEATURES = "features"; // TODO not a stats but a features request
+													// not sure where to put it though
+}

src/main/java/net/floodlightcontroller/core/web/serializers/MacSerializer.java

+/**
+*    Copyright 2011,2012 Big Switch Networks, Inc. 
+*    Originally created by David Erickson, Stanford University
+* 
+*    Licensed under the Apache License, Version 2.0 (the "License"); you may
+*    not use this file except in compliance with the License. You may obtain
+*    a copy of the License at
+*
+*         http://www.apache.org/licenses/LICENSE-2.0
+*
+*    Unless required by applicable law or agreed to in writing, software
+*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+*    License for the specific language governing permissions and limitations
+*    under the License.
+**/
+
+package net.floodlightcontroller.core.web.serializers;
+
+import java.io.IOException;
+
+import org.projectfloodlight.openflow.types.MacAddress;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonSerializer;
+import com.fasterxml.jackson.databind.SerializerProvider;
+
+/**
+ * Serialize a MAC as colon-separated hexadecimal
+ */
+public class MacSerializer extends JsonSerializer<Long> {
+
+    @Override
+    public void serialize(Long mac, JsonGenerator jGen,
+                          SerializerProvider serializer)
+                                  throws IOException, JsonProcessingException {
+        jGen.writeString(MacAddress.of(mac).toString());
+    }
+
+}