com.ibm.wiotp.sdk.codecs

Class JsonCodec

java.lang.Object

com.ibm.wiotp.sdk.codecs.JsonCodec

All Implemented Interfaces:

MessageCodec<com.google.gson.JsonObject>

public class JsonCodec
extends Object
implements MessageCodec<com.google.gson.JsonObject>

Constructor Summary

Constructors

Constructor and Description
JsonCodec()

Method Summary

Modifier and Type	Method and Description
JsonMessage	decode(org.eclipse.paho.client.mqttv3.MqttMessage msg) Convert an MQTT message into an instance of com.ibm.wiotp.sdk.Message
byte[]	encode(com.google.gson.JsonObject data, org.joda.time.DateTime timestamp) Convert an Object into a byte array suitable to send via MQTT
Class<com.google.gson.JsonObject>	getMessageClass()
String	getMessageFormat()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JsonCodec

public JsonCodec()

Method Detail

encode

public byte[] encode(com.google.gson.JsonObject data,
                     org.joda.time.DateTime timestamp)

Description copied from interface: MessageCodec

Convert an Object into a byte array suitable to send via MQTT

Specified by:

encode in interface MessageCodec<com.google.gson.JsonObject>

Parameters:

data - the Object to be encoded

timestamp - the time that the message was generated

Returns:

Byte array ready for MQTT message payload

decode

public JsonMessage decode(org.eclipse.paho.client.mqttv3.MqttMessage msg)
                   throws MalformedMessageException

Description copied from interface: MessageCodec

Convert an MQTT message into an instance of com.ibm.wiotp.sdk.Message

Specified by:

decode in interface MessageCodec<com.google.gson.JsonObject>

Parameters:

msg - the MqttMessage from Paho MQTT client to decode

Returns:

Object of class T from the decoded MQTT message

Throws:

MalformedMessageException - If unable to decode the message

getMessageClass

public Class<com.google.gson.JsonObject> getMessageClass()

Specified by:

getMessageClass in interface MessageCodec<com.google.gson.JsonObject>

getMessageFormat

public String getMessageFormat()

Specified by:

getMessageFormat in interface MessageCodec<com.google.gson.JsonObject>