RequireThis rule and fixThis Gradle task

* `gradlew clean check -x test --parallel --continue` - to collect reports
* `gradlew fixThis --parallel` - to fix all possible vulnerabilities. With `-Dfile.encoding=UTF-8` on Windows

Since the `RequireThisCheck` doesn't see parents for anonymous classes (e.g. `Runnable` callback), its report doesn't contains the outer class name with `this.`,
therefore we still have to fix those cases manually.
Thanks to the wrong `replacer` just with `this.` we have uncompilable code enough easy to find problems.
Not so easy to fix for good readability though...

* Upgrade to Grade 2.12
* Upgrade to SonarQube native plugin

The fix contains at about 300 files. So, will be done on merge.

Fix `fixThis.gradle` according PR comments

Apply `fixThis` and also `fixModifiers` for test classes.
 Fix some `this.` inner issues manually.
 Make code polishing for long lines after `fixThis`

Fix conflicts and vulnerabilities after the rebase

spring-integration-ws/src/main/java/org/springframework/integration/ws/AbstractWebServiceOutboundGateway.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -206,7 +206,7 @@ public abstract class AbstractWebServiceOutboundGateway extends AbstractReplyPro
 				.withRoot(requestMessage)
 				.build();
 
-		UriComponents uriComponents = UriComponentsBuilder.fromUriString(uri).buildAndExpand(uriVariables);
+		UriComponents uriComponents = UriComponentsBuilder.fromUriString(this.uri).buildAndExpand(uriVariables);
 		return this.encodeUri ? uriComponents.toUri() : new URI(uriComponents.toUriString());
 	}
 

spring-integration-ws/src/main/java/org/springframework/integration/ws/MarshallingWebServiceInboundGateway.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -89,15 +89,15 @@ public class MarshallingWebServiceInboundGateway extends AbstractWebServiceInbou
 	@Override
 	protected void onInit() throws Exception {
 		super.onInit();
-		Assert.notNull(marshaller, "This implementation requires Marshaller");
-		Assert.notNull(unmarshaller, "This implementation requires Unmarshaller");
+		Assert.notNull(this.marshaller, "This implementation requires Marshaller");
+		Assert.notNull(this.unmarshaller, "This implementation requires Unmarshaller");
 	}
 
 	@Override
 	protected void doInvoke(MessageContext messageContext) throws Exception{
 		WebServiceMessage request = messageContext.getRequest();
 		Assert.notNull(request, "Invalid message context: request was null.");
-		Object requestObject = MarshallingUtils.unmarshal(unmarshaller, request);
+		Object requestObject = MarshallingUtils.unmarshal(this.unmarshaller, request);
 		AbstractIntegrationMessageBuilder<?> builder = this.getMessageBuilderFactory().withPayload(requestObject);
 
 		this.fromSoapHeaders(messageContext, builder);
@@ -108,7 +108,7 @@ public class MarshallingWebServiceInboundGateway extends AbstractWebServiceInbou
 			WebServiceMessage response = messageContext.getResponse();
 			this.toSoapHeaders(response, replyMessage);
 
-			MarshallingUtils.marshal(marshaller, replyMessage.getPayload(), response);
+			MarshallingUtils.marshal(this.marshaller, replyMessage.getPayload(), response);
 		}
 	}
 }

spring-integration-ws/src/main/java/org/springframework/integration/ws/MarshallingWebServiceOutboundGateway.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -126,7 +126,7 @@ public class MarshallingWebServiceOutboundGateway extends AbstractWebServiceOutb
 
 		@Override
 		public void doWithMessageInternal(WebServiceMessage message, Object payload) throws IOException {
-			MarshallingUtils.marshal(marshaller, payload, message);
+			MarshallingUtils.marshal(MarshallingWebServiceOutboundGateway.this.marshaller, payload, message);
 		}
 	}
 
@@ -134,7 +134,7 @@ public class MarshallingWebServiceOutboundGateway extends AbstractWebServiceOutb
 
 		@Override
 		public Object doExtractData(WebServiceMessage message) throws IOException {
-			return MarshallingUtils.unmarshal(unmarshaller, message);
+			return MarshallingUtils.unmarshal(MarshallingWebServiceOutboundGateway.this.unmarshaller, message);
 		}
 	}
 }

spring-integration-ws/src/main/java/org/springframework/integration/ws/SimpleWebServiceOutboundGateway.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -118,7 +118,7 @@ public class SimpleWebServiceOutboundGateway extends AbstractWebServiceOutboundG
 
 			if (requestPayload instanceof Source) {
 				source = (Source) requestPayload;
-				Object o = sourceExtractor.extractData(source);
+				Object o = SimpleWebServiceOutboundGateway.this.sourceExtractor.extractData(source);
 				Assert.isInstanceOf(Source.class, o);
 				source = (Source) o;
 			}

spring-integration-ws/src/main/java/org/springframework/integration/ws/config/WebServiceInboundGatewayParser.java

@@ -67,7 +67,7 @@ public class WebServiceInboundGatewayParser extends AbstractInboundGatewayParser
 		if (StringUtils.hasText(marshallerRef) || StringUtils.hasText(unmarshallerRef)){
 			String extractPayload = element.getAttribute("extract-payload");
 			if (StringUtils.hasText(extractPayload)) {
-				logger.warn("Setting 'extract-payload' attribute has no effect when used with a marshalling Web Service Inbound Gateway.");
+				this.logger.warn("Setting 'extract-payload' attribute has no effect when used with a marshalling Web Service Inbound Gateway.");
 			}
 		}
 	}