MessageContext (AWS IoT Device SDK Java V2)

java.lang.Object
- software.amazon.awssdk.aws.greengrass.model.MessageContext

All Implemented Interfaces:

EventStreamJsonMessage
```
public class MessageContext
extends Object
implements EventStreamJsonMessage
```
Contextual information about the message. NOTE The context is ignored if used in PublishMessage.

Field Summary

Fields
Modifier and Type Field Description

static String APPLICATION_MODEL_TYPE

static MessageContext VOID

Constructor Summary

Constructors
Constructor Description

MessageContext()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(Object rhs)`
`String`	`getApplicationModelType()`	Returns the named model type.
`String`	`getTopic()`	The topic where the message was published.
`int`	`hashCode()`
`void`	`setTopic(String topic)`	The topic where the message was published.
`MessageContext`	`withTopic(String topic)`	The topic where the message was published.

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface software.amazon.awssdk.eventstreamrpc.model.EventStreamJsonMessage
fromJson, isVoid, postFromJson, toPayload

- Field Detail
  - APPLICATION_MODEL_TYPE
```
public static final String APPLICATION_MODEL_TYPE
```
    See Also:
    
    Constant Field Values
  - VOID
```
public static final MessageContext VOID
```
- Constructor Detail
  - MessageContext
```
public MessageContext()
```
- Method Detail
  - getTopic
```
public String getTopic()
```
    The topic where the message was published.
  - setTopic
```
public void setTopic(String topic)
```
    The topic where the message was published.
  - withTopic
```
public MessageContext withTopic(String topic)
```
    The topic where the message was published.
  - getApplicationModelType
```
public String getApplicationModelType()
```
    Description copied from interface: EventStreamJsonMessage
    
    Returns the named model type. May be used for a header.
    
    Specified by:
    
    getApplicationModelType in interface EventStreamJsonMessage
    
    Returns:
    
    the named model type
  - equals
```
public boolean equals(Object rhs)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object