001/* 002 * Copyright 2002-2019 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.transaction.interceptor; 018 019import java.lang.reflect.Method; 020 021/** 022 * Strategy interface used by {@link TransactionInterceptor} for metadata retrieval. 023 * 024 * <p>Implementations know how to source transaction attributes, whether from configuration, 025 * metadata attributes at source level (such as Java 5 annotations), or anywhere else. 026 * 027 * @author Rod Johnson 028 * @author Juergen Hoeller 029 * @since 15.04.2003 030 * @see TransactionInterceptor#setTransactionAttributeSource 031 * @see TransactionProxyFactoryBean#setTransactionAttributeSource 032 * @see org.springframework.transaction.annotation.AnnotationTransactionAttributeSource 033 */ 034public interface TransactionAttributeSource { 035 036 /** 037 * Return the transaction attribute for the given method, 038 * or {@code null} if the method is non-transactional. 039 * @param method the method to introspect 040 * @param targetClass the target class (may be {@code null}, 041 * in which case the declaring class of the method must be used) 042 * @return the matching transaction attribute, or {@code null} if none found 043 */ 044 TransactionAttribute getTransactionAttribute(Method method, Class<?> targetClass); 045 046}