Package org.springframework.integration.support

Class MutableMessage<T>

java.lang.Object

org.springframework.integration.support.MutableMessage<T>

Type Parameters:

T - the payload type.

All Implemented Interfaces:

java.io.Serializable, org.springframework.messaging.Message<T>

public class MutableMessage<T>
extends java.lang.Object
implements org.springframework.messaging.Message<T>, java.io.Serializable

An implementation of Message with a generic payload. Unlike GenericMessage, this message (or its headers) can be modified after creation. Great care must be taken, when mutating messages, that some other element/thread is not concurrently using the message. Also note that any in-memory stores (such as SimpleMessageStore) may have a reference to the message and changes will be reflected there too.

IMPORTANT: Mutable messages may share state (such as message headers); such messages should never be exposed to other components or undesirable side-effects may result.

It is generally recommended that messages transferred between components should always be immutable unless great care is taken with their use.

Since:

4.0

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor	Description
	MutableMessage(T payload)
	MutableMessage(T payload, java.util.Map<java.lang.String,java.lang.Object> headers)
protected	MutableMessage(T payload, MutableMessageHeaders headers)

Method Summary

Modifier and Type	Method	Description
boolean	equals(java.lang.Object obj)
MutableMessageHeaders	getHeaders()
T	getPayload()
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

MutableMessage

public MutableMessage(T payload)

MutableMessage

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

MutableMessage

protected MutableMessage(T payload, MutableMessageHeaders headers)

Method Details

getHeaders

public MutableMessageHeaders getHeaders()

Specified by:

getHeaders in interface org.springframework.messaging.Message<T>

getPayload

public T getPayload()

Specified by:

getPayload in interface org.springframework.messaging.Message<T>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object