Deprecate RMI module

* Remove tests from SI-RMI since the module is deprecated
* Mention such a deprecation in the docs

Author: artembilan

spring-integration-rmi/src/main/java/org/springframework/integration/rmi/RmiInboundGateway.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -25,7 +25,6 @@
 import org.springframework.lang.Nullable;
 import org.springframework.messaging.Message;
 import org.springframework.messaging.MessageChannel;
-import org.springframework.remoting.rmi.RmiServiceExporter;
 import org.springframework.remoting.support.RemoteInvocationExecutor;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
@@ -36,14 +35,18 @@
  * @author Mark Fisher
  * @author Artem Bilan
  * @author Gary Russell
+ *
+ * @deprecated since 5.4 with no replacement.
  */
+@Deprecated
 public class RmiInboundGateway extends MessagingGatewaySupport
 		implements RequestReplyExchanger {
 
 	public static final String SERVICE_NAME_PREFIX = "org.springframework.integration.rmiGateway.";
 
 
-	private final RmiServiceExporter exporter = new RmiServiceExporter();
+	private final org.springframework.remoting.rmi.RmiServiceExporter exporter =
+			new org.springframework.remoting.rmi.RmiServiceExporter();
 
 	private String requestChannelName;
 

spring-integration-rmi/src/main/java/org/springframework/integration/rmi/RmiOutboundGateway.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -23,15 +23,17 @@
 import org.springframework.messaging.Message;
 import org.springframework.messaging.MessageChannel;
 import org.springframework.messaging.MessageHandlingException;
-import org.springframework.remoting.rmi.RmiProxyFactoryBean;
 
 /**
  * An outbound Messaging Gateway for RMI-based remoting.
  *
  * @author Mark Fisher
  * @author Gary Russell
  * @author Artem Bilan
+ *
+ * @deprecated since 5.4 with no replacement.
  */
+@Deprecated
 public class RmiOutboundGateway extends AbstractReplyProducingMessageHandler {
 
 	private final RequestReplyExchanger proxy;
@@ -40,7 +42,7 @@ public class RmiOutboundGateway extends AbstractReplyProducingMessageHandler {
 
 	/**
 	 * Construct an instance with a `RequestReplyExchanger` built from the
-	 * default {@link RmiProxyFactoryBean}.
+	 * default {@link org.springframework.remoting.rmi.RmiProxyFactoryBean}.
 	 * @param url the url.
 	 */
 	public RmiOutboundGateway(String url) {
@@ -49,7 +51,7 @@ public RmiOutboundGateway(String url) {
 
 	/**
 	 * Construct an instance with a `RequestReplyExchanger` built from the
-	 * default {@link RmiProxyFactoryBean} which can be modified by the
+	 * default {@link org.springframework.remoting.rmi.RmiProxyFactoryBean} which can be modified by the
 	 * configurer.
 	 * @param url the url.
 	 * @param configurer the {@link RmiProxyFactoryBeanConfigurer}.
@@ -86,7 +88,8 @@ public final Object handleRequestMessage(Message<?> requestMessage) {
 	}
 
 	private RequestReplyExchanger createProxy(String url) {
-		RmiProxyFactoryBean proxyFactory = new RmiProxyFactoryBean();
+		org.springframework.remoting.rmi.RmiProxyFactoryBean proxyFactory =
+				new org.springframework.remoting.rmi.RmiProxyFactoryBean();
 		proxyFactory.setServiceInterface(RequestReplyExchanger.class);
 		proxyFactory.setServiceUrl(url);
 		proxyFactory.setLookupStubOnStartup(false);
@@ -109,7 +112,7 @@ public interface RmiProxyFactoryBeanConfigurer {
 		 * {@code RequestReplyExchanger} is created.
 		 * @param factoryBean the factory bean.
 		 */
-		void configure(RmiProxyFactoryBean factoryBean);
+		void configure(org.springframework.remoting.rmi.RmiProxyFactoryBean factoryBean);
 
 	}
 

spring-integration-rmi/src/main/java/org/springframework/integration/rmi/config/RmiInboundGatewayParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -21,22 +21,24 @@
 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
 import org.springframework.integration.config.xml.AbstractInboundGatewayParser;
 import org.springframework.integration.config.xml.IntegrationNamespaceUtils;
-import org.springframework.integration.rmi.RmiInboundGateway;
 
 /**
  * Parser for the <inbound-gateway/> element of the 'rmi' namespace.
  *
  * @author Mark Fisher
  * @author Gary Russell
+ *
+ * @deprecated since 5.4 with no replacement.
  */
+@Deprecated
 public class RmiInboundGatewayParser extends AbstractInboundGatewayParser {
 
 	private static final String REMOTE_INVOCATION_EXECUTOR_ATTRIBUTE = "remote-invocation-executor";
 
 
 	@Override
 	protected String getBeanClassName(Element element) {
-		return RmiInboundGateway.class.getName();
+		return org.springframework.integration.rmi.RmiInboundGateway.class.getName();
 	}
 
 	@Override

spring-integration-rmi/src/main/java/org/springframework/integration/rmi/config/RmiNamespaceHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -22,7 +22,10 @@
  * Namespace handler for Spring Integration's <em>rmi</em> namespace.
  *
  * @author Mark Fisher
+ *
+ * @deprecated since 5.4 with no replacement.
  */
+@Deprecated
 public class RmiNamespaceHandler extends AbstractIntegrationNamespaceHandler {
 
 	public void init() {

spring-integration-rmi/src/main/java/org/springframework/integration/rmi/config/RmiOutboundGatewayParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -23,20 +23,21 @@
 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
 import org.springframework.beans.factory.xml.ParserContext;
 import org.springframework.integration.config.xml.AbstractOutboundGatewayParser;
-import org.springframework.integration.rmi.RmiInboundGateway;
-import org.springframework.integration.rmi.RmiOutboundGateway;
 import org.springframework.util.StringUtils;
 
 /**
  * Parser for the <outbound-gateway/> element of the 'rmi' namespace.
  *
  * @author Mark Fisher
+ *
+ * @deprecated since 5.4 with no replacement.
  */
+@Deprecated
 public class RmiOutboundGatewayParser extends AbstractOutboundGatewayParser {
 
 	@Override
 	protected String getGatewayClassName(Element element) {
-		return RmiOutboundGateway.class.getName();
+		return org.springframework.integration.rmi.RmiOutboundGateway.class.getName();
 	}
 
 	@Override
@@ -49,7 +50,8 @@ protected String parseUrl(Element element, ParserContext parserContext) {
 		}
 		String portAttribute = element.getAttribute("port");
 		String port = StringUtils.hasText(portAttribute) ? portAttribute : "" + Registry.REGISTRY_PORT;
-		return "rmi://" + host + ":" + port + "/" + RmiInboundGateway.SERVICE_NAME_PREFIX + remoteChannel;
+		return "rmi://" + host + ":" + port + "/"
+				+ org.springframework.integration.rmi.RmiInboundGateway.SERVICE_NAME_PREFIX + remoteChannel;
 	}
 
 	@Override