Example usage for org.springframework.messaging.support MessageHeaderAccessor createAccessor

Introduction

In this page you can find the example usage for org.springframework.messaging.support MessageHeaderAccessor createAccessor.

Prototype

protected MessageHeaderAccessor createAccessor(Message<?> message) 

Source Link

Document

Build a 'nested' accessor for the given message.

Usage

From source file:org.springframework.messaging.support.MessageHeaderAccessor.java

/**
 * Return a mutable {@code MessageHeaderAccessor} for the given message attempting
 * to match the type of accessor used to create the message headers, or otherwise
 * wrapping the message with a {@code MessageHeaderAccessor} instance.
 * <p>This is for cases where a header needs to be updated in generic code
 * while preserving the accessor type for downstream processing.
 * @return an accessor of the required type, never {@code null}.
 * @since 4.1/*from   w ww .ja  va 2s . c  o m*/
 */
public static MessageHeaderAccessor getMutableAccessor(Message<?> message) {
    if (message.getHeaders() instanceof MutableMessageHeaders) {
        MutableMessageHeaders mutableHeaders = (MutableMessageHeaders) message.getHeaders();
        MessageHeaderAccessor accessor = mutableHeaders.getMessageHeaderAccessor();
        if (accessor != null) {
            return (accessor.isMutable() ? accessor : accessor.createAccessor(message));
        }
    }
    return new MessageHeaderAccessor(message);
}

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