Top Description Interfaces Classes

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Package org.springframework.messaging.support

Annotations

@NonNullApi
@NonNullFields

Imports

org.springframework.lang.NonNullApi, .NonNullFields

Provides implementations of org.springframework.messaging.Message along with a MessageBuilder and MessageHeaderAccessor for building and working with messages and message headers, as well as various org.springframework.messaging.MessageChannel implementations and channel interceptor support.

Interface Summary

Modifier and Type	Interface and Description
public interface	ChannelInterceptor Interface for interceptors that are able to view and/or modify the `Messages` being sent-to and/or received-from a `MessageChannel`.
public interface	ExecutorChannelInterceptor An extension of `ChannelInterceptor` with callbacks to intercept the asynchronous sending of a `org.springframework.messaging.Message` to a specific subscriber through an `java.util.concurrent.Executor`.
public interface	HeaderMapper< type of the instance to and from which headers will be mapped T> Generic strategy interface for mapping `MessageHeaders` to and from other types of objects.
public interface	InterceptableChannel A `MessageChannel` that maintains a list `ChannelInterceptors` and allows interception of message sending.
public interface	MessageHandlingRunnable Extension of the `Runnable` interface with methods to obtain the `MessageHandler` and `Message` to be handled.
public interface	MessageHeaderInitializer Callback interface for initializing a `MessageHeaderAccessor`.

Class Summary

Modifier and Type	Class and Description
public abstract class	AbstractHeaderMapper< type of the instance to and from which headers will be mapped T> A base `HeaderMapper` implementation.
public abstract class	AbstractMessageChannel Abstract base class for `MessageChannel` implementations.
public abstract class	AbstractSubscribableChannel Abstract base class for `SubscribableChannel` implementations.
public class	ErrorMessage A `GenericMessage` with a `Throwable` payload.
public class	ExecutorSubscribableChannel A `SubscribableChannel` that sends messages to each of its subscribers.
public class	GenericMessage< the payload type T> An implementation of `Message` with a generic payload.
public class	IdTimestampMessageHeaderInitializer A `MessageHeaderInitializer` to customize the strategy for ID and TIMESTAMP message header generation.
public class	ImmutableMessageChannelInterceptor A simpler interceptor that calls `MessageHeaderAccessor#setImmutable()` on the headers of messages passed through the preSend method.
public class	MessageBuilder< the message payload type T> A builder for creating a `GenericMessage` (or `ErrorMessage` if the payload is of type `Throwable`).
public class	MessageHeaderAccessor Wrapper around `MessageHeaders` that provides extra features such as strongly typed accessors for specific headers, the ability to leave headers in a `Message` mutable, and the option to suppress automatic generation of `id` and `timestamp` headers.
public class	NativeMessageHeaderAccessor `MessageHeaderAccessor` subclass that supports storage and access of headers from an external source such as a message broker.