INT-3770: Add TX Support from Mid-flow

JIRA: https://jira.spring.io/browse/INT-3770,
https://jira.spring.io/browse/INT-4107

Having `TransactionHandleMessageAdvice` we can start TX from any `MessageHandler.handleMessage()`

* Add `<transactional>` alongside with the `<request-handler-advice-chain>` for those components which produce reply
* Merge `<transactional>` and `<request-handler-advice-chain>` configuration to a single `ManagedList`
* Rework JPA `<transactional>` in favor of common solution
* Some polishing and refactoring

AbstractPollingEndpoint: avoid `new ArrayList` if we don't  have `receiveOnlyAdvice`s

spring-integration-rmi/src/test/java/org/springframework/integration/rmi/BackToBackTests-context.xml

@@ -12,8 +12,13 @@
 	<int:channel id="good" />
 
 	<int-rmi:outbound-gateway remote-channel="foo" host="localhost"
-		request-channel="good" reply-channel="reply"
-		port="#{@port}"/>
+		request-channel="good" reply-channel="reply" port="#{@port}">
+		<int-rmi:transactional/>
+	</int-rmi:outbound-gateway>
+
+	<bean id="transactionManager" class="org.mockito.Mockito" factory-method="mock">
+		<constructor-arg value="org.springframework.transaction.PlatformTransactionManager"/>
+	</bean>
 
 	<int-rmi:inbound-gateway request-channel="foo" registry-port="#{@port}" />
 

spring-integration-rmi/src/test/java/org/springframework/integration/rmi/BackToBackTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2014 the original author or authors.
+ * Copyright 2013-2016 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.
@@ -21,25 +21,31 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertThat;
 import static org.junit.Assert.fail;
+import static org.mockito.Matchers.any;
+import static org.mockito.Mockito.verify;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.support.AbstractApplicationContext;
-import org.springframework.messaging.support.GenericMessage;
 import org.springframework.messaging.Message;
 import org.springframework.messaging.PollableChannel;
 import org.springframework.messaging.SubscribableChannel;
-import org.springframework.test.context.ContextConfiguration;
-import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.messaging.support.GenericMessage;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.transaction.PlatformTransactionManager;
+import org.springframework.transaction.TransactionDefinition;
 
 /**
  * @author Gary Russell
+ * @author Artem Bilan
  * @since 3.0
  *
  */
-@ContextConfiguration
-@RunWith(SpringJUnit4ClassRunner.class)
+@RunWith(SpringRunner.class)
+@DirtiesContext
 public class BackToBackTests {
 
 	@Autowired
@@ -57,12 +63,17 @@ public class BackToBackTests {
 	@Autowired
 	private AbstractApplicationContext context;
 
+	@Autowired
+	private PlatformTransactionManager transactionManager;
+
 	@Test
 	public void testGood() {
-		good.send(new GenericMessage<String>("foo"));
+		good.send(new GenericMessage<>("foo"));
 		Message<?> reply = this.reply.receive(0);
 		assertNotNull(reply);
 		assertEquals("reply:foo", reply.getPayload());
+
+		verify(this.transactionManager).getTransaction(any(TransactionDefinition.class));
 	}
 
 	@Test

spring-integration-rmi/src/test/resources/log4j.properties

@@ -0,0 +1,8 @@
+log4j.rootCategory=WARN, stdout
+
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %t %c{2}:%L - %m%n
+
+log4j.category.org.springframework.integration=WARN
+log4j.category.org.springframework.integration.rmi=WARN