001/* 002 * Copyright 2002-2012 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.support; 018 019import org.springframework.transaction.TransactionException; 020 021/** 022 * Interface specifying basic transaction execution operations. 023 * Implemented by {@link TransactionTemplate}. Not often used directly, 024 * but a useful option to enhance testability, as it can easily be 025 * mocked or stubbed. 026 * 027 * @author Juergen Hoeller 028 * @since 2.0.4 029 */ 030public interface TransactionOperations { 031 032 /** 033 * Execute the action specified by the given callback object within a transaction. 034 * <p>Allows for returning a result object created within the transaction, that is, 035 * a domain object or a collection of domain objects. A RuntimeException thrown 036 * by the callback is treated as a fatal exception that enforces a rollback. 037 * Such an exception gets propagated to the caller of the template. 038 * @param action the callback object that specifies the transactional action 039 * @return a result object returned by the callback, or {@code null} if none 040 * @throws TransactionException in case of initialization, rollback, or system errors 041 * @throws RuntimeException if thrown by the TransactionCallback 042 */ 043 <T> T execute(TransactionCallback<T> action) throws TransactionException; 044 045}