org.springframework.integration.handler.BridgeHandler Maven / Gradle / Ivy
/*
* Copyright 2002-2019 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.integration.handler;
import org.springframework.messaging.Message;
/**
* A simple MessageHandler implementation that passes the request Message
* directly to the output channel without modifying it. The main purpose of this
* handler is to bridge a PollableChannel to a SubscribableChannel or
* vice-versa.
*
* The BridgeHandler can be used as a stopper at the end of an assembly line of
* channels. In this setup the output channel doesn't have to be set, but if the
* output channel is omitted the REPLY_CHANNEL MUST be set on the
* message. Otherwise, a MessagingException will be thrown at runtime.
*
* @author Mark Fisher
* @author Iwein Fuld
* @author Marius Bogoevici
*/
public class BridgeHandler extends AbstractReplyProducingMessageHandler {
@Override
public String getComponentType() {
return "bridge";
}
@Override
protected Object handleRequestMessage(Message requestMessage) {
return requestMessage;
}
@Override
protected boolean shouldCopyRequestHeaders() {
return false;
}
}