TransactionAttributeSourcePointcut pointcut skips target classes with TransactionalProxy marker (e.g. Spring Data proxies)

Issue: SPR-13109

spring-tx/src/main/java/org/springframework/transaction/interceptor/TransactionAttributeSourcePointcut.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -34,6 +34,9 @@ abstract class TransactionAttributeSourcePointcut extends StaticMethodMatcherPoi
 
 	@Override
 	public boolean matches(Method method, Class<?> targetClass) {
+		if (TransactionalProxy.class.isAssignableFrom(targetClass)) {
+			return false;
+		}
 		TransactionAttributeSource tas = getTransactionAttributeSource();
 		return (tas == null || tas.getTransactionAttribute(method, targetClass) != null);
 	}

spring-tx/src/main/java/org/springframework/transaction/interceptor/TransactionalProxy.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2002-2015 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
+ *
+ *      http://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.interceptor;
+
+import org.springframework.aop.SpringProxy;
+
+/**
+ * A marker interface for manually created transactional proxies.
+ *
+ * <p>{@link TransactionAttributeSourcePointcut} will ignore such existing
+ * transactional proxies during AOP auto-proxying and therefore avoid
+ * re-processing transaction metadata on them.
+ *
+ * @author Juergen Hoeller
+ * @since 4.1.7
+ */
+public interface TransactionalProxy extends SpringProxy {
+
+}