Headers (Axon Framework 4.1.1 API)

java.lang.Object
- org.axonframework.messaging.Headers

```
public abstract class Headers
extends Object
```
Default headers to include when publishing a message on a broker.

Since:

3.0

Author:

Nakul Mishra

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`AGGREGATE_ID` Key pointing to the aggregate identifier of a message.
`static String`	`AGGREGATE_SEQ` Key pointing to the aggregate sequence of a message.
`static String`	`AGGREGATE_TYPE` Key pointing to the aggregate type of a message.
`static String`	`DEADLINE_NAME` Key pointing to the deadline name of a `DeadlineMessage`.
`static String`	`MESSAGE_ID` Key pointing to a message identifier.
`static String`	`MESSAGE_METADATA` Key pointing to the `MetaData` of a message.
`static String`	`MESSAGE_REVISION` Key pointing to the revision of a message.
`static String`	`MESSAGE_TIMESTAMP` Key pointing to the timestamp of a message.
`static String`	`MESSAGE_TYPE` Key pointing to the payload type of a message.
`static String`	`SERIALIZED_MESSAGE_PAYLOAD` Key pointing to the serialized payload of a message.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`static Map<String,Object>`	`defaultHeaders(EventMessage<?> message, SerializedObject<?> serializedObject)` Generate defaults headers to recognise an event message.
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - MESSAGE_ID
```
public static final String MESSAGE_ID
```
    Key pointing to a message identifier.
    
    See Also:
    
    Constant Field Values
  - SERIALIZED_MESSAGE_PAYLOAD
```
public static final String SERIALIZED_MESSAGE_PAYLOAD
```
    Key pointing to the serialized payload of a message.
    
    See Also:
    
    Constant Field Values
  - MESSAGE_TYPE
```
public static final String MESSAGE_TYPE
```
    Key pointing to the payload type of a message.
    
    See Also:
    
    Constant Field Values
  - MESSAGE_REVISION
```
public static final String MESSAGE_REVISION
```
    Key pointing to the revision of a message.
    
    See Also:
    
    Constant Field Values
  - MESSAGE_TIMESTAMP
```
public static final String MESSAGE_TIMESTAMP
```
    Key pointing to the timestamp of a message.
    
    See Also:
    
    Constant Field Values
  - AGGREGATE_ID
```
public static final String AGGREGATE_ID
```
    Key pointing to the aggregate identifier of a message.
    
    See Also:
    
    Constant Field Values
  - AGGREGATE_SEQ
```
public static final String AGGREGATE_SEQ
```
    Key pointing to the aggregate sequence of a message.
    
    See Also:
    
    Constant Field Values
  - AGGREGATE_TYPE
```
public static final String AGGREGATE_TYPE
```
    Key pointing to the aggregate type of a message.
    
    See Also:
    
    Constant Field Values
  - MESSAGE_METADATA
```
public static final String MESSAGE_METADATA
```
    Key pointing to the MetaData of a message.
    
    See Also:
    
    Constant Field Values
  - DEADLINE_NAME
```
public static final String DEADLINE_NAME
```
    Key pointing to the deadline name of a DeadlineMessage.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - defaultHeaders
```
public static Map<String,Object> defaultHeaders(EventMessage<?> message,
                                                SerializedObject<?> serializedObject)
```
    Generate defaults headers to recognise an event message.
    
    Parameters:
    
    message - event message.
    
    serializedObject - payload.
    
    Returns:
    
    headers
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class Headers

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

MESSAGE_ID

SERIALIZED_MESSAGE_PAYLOAD

MESSAGE_TYPE

MESSAGE_REVISION

MESSAGE_TIMESTAMP

AGGREGATE_ID

AGGREGATE_SEQ

AGGREGATE_TYPE

MESSAGE_METADATA

DEADLINE_NAME

Method Detail

defaultHeaders

toString