org.springframework.messaging.support

Class GenericMessage<T>

java.lang.Object

org.springframework.messaging.support.GenericMessage<T>

All Implemented Interfaces:

java.io.Serializable, Message<T>

Direct Known Subclasses:

ErrorMessage

public class GenericMessage<T>
extends java.lang.Object
implements Message<T>, java.io.Serializable

An implementation of Message with a generic payload. Once created, a GenericMessage is immutable.

Since:

4.0

Author:

Mark Fisher

See Also:

MessageBuilder, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private MessageHeaders	headers
private T	payload
private static long	serialVersionUID

Constructor Summary

Constructors

Constructor and Description
GenericMessage(T payload) Create a new message with the given payload.
GenericMessage(T payload, java.util.Map<java.lang.String,java.lang.Object> headers) Create a new message with the given payload and headers.
GenericMessage(T payload, MessageHeaders headers) A constructor with the MessageHeaders instance to use.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object other)
MessageHeaders	getHeaders() Return message headers for the message (never null but may be empty).
T	getPayload() Return the message payload.
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

payload

private final T payload

headers

private final MessageHeaders headers

Constructor Detail

GenericMessage

public GenericMessage(T payload)

Create a new message with the given payload.

Parameters:

payload - the message payload (never null)

GenericMessage

public GenericMessage(T payload,
                      java.util.Map<java.lang.String,java.lang.Object> headers)

Create a new message with the given payload and headers. The content of the given header map is copied.

Parameters:

payload - the message payload (never null)

headers - message headers to use for initialization

GenericMessage

public GenericMessage(T payload,
                      MessageHeaders headers)

A constructor with the MessageHeaders instance to use.

Note: the given MessageHeaders instance is used directly in the new message, i.e. it is not copied.

Parameters:

payload - the message payload (never null)

headers - message headers

Method Detail

getPayload

public T getPayload()

Description copied from interface: Message

Return the message payload.

Specified by:

getPayload in interface Message<T>

getHeaders

public MessageHeaders getHeaders()

Description copied from interface: Message

Return message headers for the message (never null but may be empty).

Specified by:

getHeaders in interface Message<T>

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object