/**
*    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 com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import org.projectfloodlight.openflow.util.HexString;

/**
 * Serialize a DPID as colon-separated hexadecimal
 */
public class DPIDSerializer extends JsonSerializer<Long> {

    @Override
    public void serialize(Long dpid, JsonGenerator jGen,
                          SerializerProvider serializer)
                                  throws IOException, JsonProcessingException {
        jGen.writeString(HexString.toHexString(dpid, 8));
    }

}

@@ -1051,16 +1051,71 @@
 String;%0A
+import org.projectfloodlight.openflow.types.DatapathId;
 %0A/**%0A * 
@@ -1217,20 +1217,26 @@
 ializer%3C
-Long
+DatapathId
 %3E %7B%0A%0A   
@@ -1276,12 +1276,18 @@
 ize(
-Long
+DatapathId
  dpi
@@ -1497,16 +1497,26 @@
 ing(dpid
+.getLong()
 , 8));%0A 

Modify the Serializer for DPID (Long -> DatapathId )