001/* 002 * Copyright 2002-2018 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.jms.core; 018 019import javax.jms.JMSException; 020import javax.jms.Session; 021 022import org.springframework.lang.Nullable; 023 024/** 025 * Callback for executing any number of operations on a provided {@link Session}. 026 * 027 * <p>To be used with the {@link JmsTemplate#execute(SessionCallback)} method, 028 * often implemented as an anonymous inner class or as a lambda expression. 029 * 030 * @author Mark Pollack 031 * @since 1.1 032 * @param <T> the result type 033 * @see JmsTemplate#execute(SessionCallback) 034 */ 035@FunctionalInterface 036public interface SessionCallback<T> { 037 038 /** 039 * Execute any number of operations against the supplied JMS {@link Session}, 040 * possibly returning a result. 041 * @param session the JMS {@code Session} 042 * @return a result object from working with the {@code Session}, if any 043 * (or {@code null} if none) 044 * @throws javax.jms.JMSException if thrown by JMS API methods 045 */ 046 @Nullable 047 T doInJms(Session session) throws JMSException; 048 049}