spring ProducerCallback 源码
spring ProducerCallback 代码
文件路径：/spring-jms/src/main/java/org/springframework/jms/core/ProducerCallback.java
/*
* Copyright 2002-2018 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.jms.core;
import jakarta.jms.JMSException;
import jakarta.jms.MessageProducer;
import jakarta.jms.Session;
import org.springframework.lang.Nullable;
/**
* Callback for sending a message to a JMS destination.
*
* <p>To be used with {@link JmsTemplate}'s callback methods that take a
* {@link ProducerCallback} argument, often implemented as an anonymous
* inner class or as a lambda expression.
*
* <p>The typical implementation will perform multiple operations on the
* supplied JMS {@link Session} and {@link MessageProducer}.
*
* @author Mark Pollack
* @since 1.1
* @param <T> the result type
* @see JmsTemplate#execute(ProducerCallback)
* @see JmsTemplate#execute(jakarta.jms.Destination, ProducerCallback)
* @see JmsTemplate#execute(String, ProducerCallback)
*/
@FunctionalInterface
public interface ProducerCallback<T> {
/**
* Perform operations on the given {@link Session} and {@link MessageProducer}.
* <p>The message producer is not associated with any destination unless
* when specified in the JmsTemplate call.
* @param session the JMS {@code Session} object to use
* @param producer the JMS {@code MessageProducer} object to use
* @return a result object from working with the {@code Session}, if any
* (or {@code null} if none)
* @throws jakarta.jms.JMSException if thrown by JMS API methods
*/
@Nullable
T doInJms(Session session, MessageProducer producer) throws JMSException;
}
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