org.springframework.transaction.compensating.support.CompensatingTransactionUtils Maven / Gradle / Ivy

/*
 * Copyright 2005-2010 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.transaction.compensating.support;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import org.springframework.transaction.compensating.CompensatingTransactionOperationManager;
import org.springframework.transaction.support.TransactionSynchronizationManager;

/**
 * Common methods for use with compensating transactions.
 *
 * @author Mattias Hellborg Arthursson
 * @since 1.2
 */
public final class CompensatingTransactionUtils {

	/**
	 * Not to be instantiated.
	 */
	private CompensatingTransactionUtils() {
	}

	/**
	 * Perform the specified operation, storing the state prior to the operation in order
	 * to enable commit/rollback later. If no transaction is currently active, proceed
	 * with the original call on the target.
	 * @param synchronizationKey the transaction synchronization key we are operating on
	 * (typically something similar to a DataSource).
	 * @param target the actual target resource that should be used for invoking the
	 * operation on should no transaction be active.
	 * @param method name of the method to be invoked.
	 * @param args arguments with which the operation is invoked.
	 */
	public static void performOperation(Object synchronizationKey, Object target, Method method, Object[] args)
			throws Throwable {
		CompensatingTransactionHolderSupport transactionResourceHolder = (CompensatingTransactionHolderSupport) TransactionSynchronizationManager
				.getResource(synchronizationKey);
		if (transactionResourceHolder != null) {

			CompensatingTransactionOperationManager transactionOperationManager = transactionResourceHolder
					.getTransactionOperationManager();
			transactionOperationManager.performOperation(transactionResourceHolder.getTransactedResource(),
					method.getName(), args);
		}
		else {
			// Perform the target operation
			try {
				method.invoke(target, args);
			}
			catch (InvocationTargetException ex) {
				throw ex.getTargetException();
			}
		}
	}

}