spring StompFrameHandler 源码
spring StompFrameHandler 代码
文件路径：/spring-messaging/src/main/java/org/springframework/messaging/simp/stomp/StompFrameHandler.java
/*
* Copyright 2002-2015 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.messaging.simp.stomp;
import java.lang.reflect.Type;
import org.springframework.lang.Nullable;
/**
* Contract to handle a STOMP frame.
*
* @author Rossen Stoyanchev
* @since 4.2
*/
public interface StompFrameHandler {
/**
* Invoked before {@link #handleFrame(StompHeaders, Object)} to determine the
* type of Object the payload should be converted to.
* @param headers the headers of a message
*/
Type getPayloadType(StompHeaders headers);
/**
* Handle a STOMP frame with the payload converted to the target type returned
* from {@link #getPayloadType(StompHeaders)}.
* @param headers the headers of the frame
* @param payload the payload, or {@code null} if there was no payload
*/
void handleFrame(StompHeaders headers, @Nullable Object payload);
}
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