Polishing

spring-aspects/src/main/java/org/springframework/context/annotation/aspectj/SpringConfiguredConfiguration.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.
@@ -28,9 +28,9 @@ import org.springframework.context.annotation.Role;
  * annotated with @{@link org.springframework.beans.factory.annotation.Configurable
  * Configurable}.
  *
- * <p>This configuration class is automatically imported when using the @{@link
- * EnableSpringConfigured} annotation. See {@code @EnableSpringConfigured} Javadoc for
- * complete usage details.
+ * <p>This configuration class is automatically imported when using the
+ * @{@link EnableSpringConfigured} annotation. See {@code @EnableSpringConfigured}'s
+ * javadoc for complete usage details.
  *
  * @author Chris Beams
  * @since 3.1
@@ -42,9 +42,10 @@ public class SpringConfiguredConfiguration {
 	public static final String BEAN_CONFIGURER_ASPECT_BEAN_NAME =
 			"org.springframework.context.config.internalBeanConfigurerAspect";
 
-	@Bean(name=BEAN_CONFIGURER_ASPECT_BEAN_NAME)
+	@Bean(name = BEAN_CONFIGURER_ASPECT_BEAN_NAME)
 	@Role(BeanDefinition.ROLE_INFRASTRUCTURE)
 	public AnnotationBeanConfigurerAspect beanConfigurerAspect() {
 		return AnnotationBeanConfigurerAspect.aspectOf();
 	}
+
 }

spring-context/src/main/java/org/springframework/cache/annotation/AbstractCachingConfiguration.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.
@@ -17,7 +17,6 @@
 package org.springframework.cache.annotation;
 
 import java.util.Collection;
-
 import javax.annotation.PostConstruct;
 
 import org.springframework.beans.factory.annotation.Autowired;
@@ -27,12 +26,11 @@ import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.ImportAware;
 import org.springframework.core.annotation.AnnotationAttributes;
 import org.springframework.core.type.AnnotationMetadata;
-import org.springframework.util.Assert;
 import org.springframework.util.CollectionUtils;
 
 /**
- * Abstract base {@code @Configuration} class providing common structure for enabling
- * Spring's annotation-driven cache management capability.
+ * Abstract base {@code @Configuration} class providing common structure
+ * for enabling Spring's annotation-driven cache management capability.
  *
  * @author Chris Beams
  * @since 3.1
@@ -42,22 +40,28 @@ import org.springframework.util.CollectionUtils;
 public abstract class AbstractCachingConfiguration implements ImportAware {
 
 	protected AnnotationAttributes enableCaching;
+
 	protected CacheManager cacheManager;
+
 	protected KeyGenerator keyGenerator;
 
-	@Autowired(required=false)
+	@Autowired(required = false)
 	private Collection<CacheManager> cacheManagerBeans;
-	@Autowired(required=false)
+
+	@Autowired(required = false)
 	private Collection<CachingConfigurer> cachingConfigurers;
 
+
 	public void setImportMetadata(AnnotationMetadata importMetadata) {
 		this.enableCaching = AnnotationAttributes.fromMap(
 				importMetadata.getAnnotationAttributes(EnableCaching.class.getName(), false));
-		Assert.notNull(this.enableCaching,
-				"@EnableCaching is not present on importing class " +
-				importMetadata.getClassName());
+		if (this.enableCaching == null) {
+			throw new IllegalArgumentException(
+					"@EnableCaching is not present on importing class " + importMetadata.getClassName());
+		}
 	}
 
+
 	/**
 	 * Determine which {@code CacheManager} bean to use. Prefer the result of
 	 * {@link CachingConfigurer#cacheManager()} over any by-type matching. If none, fall
@@ -68,20 +72,20 @@ public abstract class AbstractCachingConfiguration implements ImportAware {
 	 */
 	@PostConstruct
 	protected void reconcileCacheManager() {
-		if (!CollectionUtils.isEmpty(cachingConfigurers)) {
-			int nConfigurers = cachingConfigurers.size();
+		if (!CollectionUtils.isEmpty(this.cachingConfigurers)) {
+			int nConfigurers = this.cachingConfigurers.size();
 			if (nConfigurers > 1) {
 				throw new IllegalStateException(nConfigurers + " implementations of " +
 						"CachingConfigurer were found when only 1 was expected. " +
 						"Refactor the configuration such that CachingConfigurer is " +
 						"implemented only once or not at all.");
 			}
-			CachingConfigurer cachingConfigurer = cachingConfigurers.iterator().next();
+			CachingConfigurer cachingConfigurer = this.cachingConfigurers.iterator().next();
 			this.cacheManager = cachingConfigurer.cacheManager();
 			this.keyGenerator = cachingConfigurer.keyGenerator();
 		}
-		else if (!CollectionUtils.isEmpty(cacheManagerBeans)) {
-			int nManagers = cacheManagerBeans.size();
+		else if (!CollectionUtils.isEmpty(this.cacheManagerBeans)) {
+			int nManagers = this.cacheManagerBeans.size();
 			if (nManagers > 1) {
 				throw new IllegalStateException(nManagers + " beans of type CacheManager " +
 						"were found when only 1 was expected. Remove all but one of the " +
@@ -89,8 +93,7 @@ public abstract class AbstractCachingConfiguration implements ImportAware {
 						"to make explicit which CacheManager should be used for " +
 						"annotation-driven cache management.");
 			}
-			CacheManager cacheManager = cacheManagerBeans.iterator().next();
-			this.cacheManager = cacheManager;
+			this.cacheManager = cacheManager = this.cacheManagerBeans.iterator().next();
 			// keyGenerator remains null; will fall back to default within CacheInterceptor
 		}
 		else {
@@ -99,4 +102,5 @@ public abstract class AbstractCachingConfiguration implements ImportAware {
 					"from your configuration.");
 		}
 	}
+
 }

spring-context/src/main/java/org/springframework/context/annotation/LoadTimeWeavingConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2011 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.
@@ -26,16 +26,15 @@ import org.springframework.context.weaving.DefaultContextLoadTimeWeaver;
 import org.springframework.core.annotation.AnnotationAttributes;
 import org.springframework.core.type.AnnotationMetadata;
 import org.springframework.instrument.classloading.LoadTimeWeaver;
-import org.springframework.util.Assert;
 
 import static org.springframework.context.weaving.AspectJWeavingEnabler.*;
 
 /**
  * {@code @Configuration} class that registers a {@link LoadTimeWeaver} bean.
  *
- * <p>This configuration class is automatically imported when using the @{@link
- * EnableLoadTimeWeaving} annotation.  See {@code @EnableLoadTimeWeaving} Javadoc for
- * complete usage details.
+ * <p>This configuration class is automatically imported when using the
+ * {@link EnableLoadTimeWeaving} annotation. See {@code @EnableLoadTimeWeaving}
+ * javadoc for complete usage details.
  *
  * @author Chris Beams
  * @since 3.1
@@ -47,28 +46,31 @@ public class LoadTimeWeavingConfiguration implements ImportAware, BeanClassLoade
 
 	private AnnotationAttributes enableLTW;
 
-	@Autowired(required=false)
+	@Autowired(required = false)
 	private LoadTimeWeavingConfigurer ltwConfigurer;
 
 	private ClassLoader beanClassLoader;
 
+
 	public void setImportMetadata(AnnotationMetadata importMetadata) {
 		this.enableLTW = MetadataUtils.attributesFor(importMetadata, EnableLoadTimeWeaving.class);
-		Assert.notNull(this.enableLTW,
-				"@EnableLoadTimeWeaving is not present on importing class " +
-				importMetadata.getClassName());
+		if (this.enableLTW == null) {
+			throw new IllegalArgumentException(
+					"@EnableLoadTimeWeaving is not present on importing class " + importMetadata.getClassName());
+		}
 	}
 
 	public void setBeanClassLoader(ClassLoader beanClassLoader) {
 		this.beanClassLoader = beanClassLoader;
 	}
 
-	@Bean(name=ConfigurableApplicationContext.LOAD_TIME_WEAVER_BEAN_NAME)
+
+	@Bean(name = ConfigurableApplicationContext.LOAD_TIME_WEAVER_BEAN_NAME)
 	@Role(BeanDefinition.ROLE_INFRASTRUCTURE)
 	public LoadTimeWeaver loadTimeWeaver() {
 		LoadTimeWeaver loadTimeWeaver = null;
 
-		if (ltwConfigurer != null) {
+		if (this.ltwConfigurer != null) {
 			// the user has provided a custom LTW instance
 			loadTimeWeaver = ltwConfigurer.getLoadTimeWeaver();
 		}

spring-context/src/main/java/org/springframework/context/annotation/MBeanExportConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 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.
@@ -30,7 +30,6 @@ import org.springframework.jmx.export.annotation.AnnotationMBeanExporter;
 import org.springframework.jmx.support.RegistrationPolicy;
 import org.springframework.jmx.support.WebSphereMBeanServerFactoryBean;
 import org.springframework.jndi.JndiLocatorDelegate;
-import org.springframework.util.Assert;
 import org.springframework.util.ClassUtils;
 import org.springframework.util.StringUtils;
 
@@ -50,23 +49,26 @@ public class MBeanExportConfiguration implements ImportAware, BeanFactoryAware {
 
 	private static final String MBEAN_EXPORTER_BEAN_NAME = "mbeanExporter";
 
-	private AnnotationAttributes attributes;
+	private AnnotationAttributes enableMBeanExport;
 
 	private BeanFactory beanFactory;
 
 
 	public void setImportMetadata(AnnotationMetadata importMetadata) {
 		Map<String, Object> map = importMetadata.getAnnotationAttributes(EnableMBeanExport.class.getName());
-		this.attributes = AnnotationAttributes.fromMap(map);
-		Assert.notNull(this.attributes,
+		this.enableMBeanExport = AnnotationAttributes.fromMap(map);
+		if (this.enableMBeanExport == null) {
+			throw new IllegalArgumentException(
 					"@EnableMBeanExport is not present on importing class " + importMetadata.getClassName());
 		}
+	}
 
 	public void setBeanFactory(BeanFactory beanFactory) {
 		this.beanFactory = beanFactory;
 	}
 
-	@Bean(name=MBEAN_EXPORTER_BEAN_NAME)
+
+	@Bean(name = MBEAN_EXPORTER_BEAN_NAME)
 	@Role(BeanDefinition.ROLE_INFRASTRUCTURE)
 	public AnnotationMBeanExporter mbeanExporter() {
 		AnnotationMBeanExporter exporter = new AnnotationMBeanExporter();
@@ -77,14 +79,14 @@ public class MBeanExportConfiguration implements ImportAware, BeanFactoryAware {
 	}
 
 	private void setupDomain(AnnotationMBeanExporter exporter) {
-		String defaultDomain = this.attributes.getString("defaultDomain");
+		String defaultDomain = this.enableMBeanExport.getString("defaultDomain");
 		if (StringUtils.hasText(defaultDomain)) {
 			exporter.setDefaultDomain(defaultDomain);
 		}
 	}
 
 	private void setupServer(AnnotationMBeanExporter exporter) {
-		String server = this.attributes.getString("server");
+		String server = this.enableMBeanExport.getString("server");
 		if (StringUtils.hasText(server)) {
 			exporter.setServer(this.beanFactory.getBean(server, MBeanServer.class));
 		}
@@ -97,7 +99,7 @@ public class MBeanExportConfiguration implements ImportAware, BeanFactoryAware {
 	}
 
 	private void setupRegistrationPolicy(AnnotationMBeanExporter exporter) {
-		RegistrationPolicy registrationPolicy = this.attributes.getEnum("registration");
+		RegistrationPolicy registrationPolicy = this.enableMBeanExport.getEnum("registration");
 		exporter.setRegistrationPolicy(registrationPolicy);
 	}
 

spring-context/src/main/java/org/springframework/scheduling/annotation/AbstractAsyncConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 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.
@@ -24,7 +24,6 @@ import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.ImportAware;
 import org.springframework.core.annotation.AnnotationAttributes;
 import org.springframework.core.type.AnnotationMetadata;
-import org.springframework.util.Assert;
 import org.springframework.util.CollectionUtils;
 
 /**
@@ -46,14 +45,16 @@ public abstract class AbstractAsyncConfiguration implements ImportAware {
 	public void setImportMetadata(AnnotationMetadata importMetadata) {
 		this.enableAsync = AnnotationAttributes.fromMap(
 				importMetadata.getAnnotationAttributes(EnableAsync.class.getName(), false));
-		Assert.notNull(this.enableAsync,
+		if (this.enableAsync == null) {
+			throw new IllegalArgumentException(
 					"@EnableAsync is not present on importing class " + importMetadata.getClassName());
 		}
+	}
 
 	/**
 	 * Collect any {@link AsyncConfigurer} beans through autowiring.
 	 */
-	@Autowired(required=false)
+	@Autowired(required = false)
 	void setConfigurers(Collection<AsyncConfigurer> configurers) {
 		if (CollectionUtils.isEmpty(configurers)) {
 			return;

spring-tx/src/main/java/org/springframework/transaction/annotation/AbstractTransactionManagementConfiguration.java

@@ -24,7 +24,6 @@ import org.springframework.context.annotation.ImportAware;
 import org.springframework.core.annotation.AnnotationAttributes;
 import org.springframework.core.type.AnnotationMetadata;
 import org.springframework.transaction.PlatformTransactionManager;
-import org.springframework.util.Assert;
 import org.springframework.util.CollectionUtils;
 
 /**
@@ -49,9 +48,11 @@ public abstract class AbstractTransactionManagementConfiguration implements Impo
 	public void setImportMetadata(AnnotationMetadata importMetadata) {
 		this.enableTx = AnnotationAttributes.fromMap(
 				importMetadata.getAnnotationAttributes(EnableTransactionManagement.class.getName(), false));
-		Assert.notNull(this.enableTx,
+		if (this.enableTx == null) {
+			throw new IllegalArgumentException(
 					"@EnableTransactionManagement is not present on importing class " + importMetadata.getClassName());
 		}
+	}
 
 	@Autowired(required = false)
 	void setConfigurers(Collection<TransactionManagementConfigurer> configurers) {

spring-tx/src/main/java/org/springframework/transaction/annotation/ProxyTransactionManagementConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 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.
@@ -26,8 +26,8 @@ import org.springframework.transaction.interceptor.TransactionAttributeSource;
 import org.springframework.transaction.interceptor.TransactionInterceptor;
 
 /**
- * {@code @Configuration} class that registers the Spring infrastructure beans necessary
- * to enable proxy-based annotation-driven transaction management.
+ * {@code @Configuration} class that registers the Spring infrastructure beans
+ * necessary to enable proxy-based annotation-driven transaction management.
  *
  * @author Chris Beams
  * @since 3.1
@@ -37,7 +37,7 @@ import org.springframework.transaction.interceptor.TransactionInterceptor;
 @Configuration
 public class ProxyTransactionManagementConfiguration extends AbstractTransactionManagementConfiguration {
 
-	@Bean(name=TransactionManagementConfigUtils.TRANSACTION_ADVISOR_BEAN_NAME)
+	@Bean(name = TransactionManagementConfigUtils.TRANSACTION_ADVISOR_BEAN_NAME)
 	@Role(BeanDefinition.ROLE_INFRASTRUCTURE)
 	public BeanFactoryTransactionAttributeSourceAdvisor transactionAdvisor() {
 		BeanFactoryTransactionAttributeSourceAdvisor advisor = new BeanFactoryTransactionAttributeSourceAdvisor();

spring-webmvc/src/main/java/org/springframework/web/servlet/config/annotation/DelegatingWebMvcConfiguration.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.
@@ -42,6 +42,7 @@ public class DelegatingWebMvcConfiguration extends WebMvcConfigurationSupport {
 
 	private final WebMvcConfigurerComposite configurers = new WebMvcConfigurerComposite();
 
+
 	@Autowired(required = false)
 	public void setConfigurers(List<WebMvcConfigurer> configurers) {
 		if (configurers == null || configurers.isEmpty()) {
@@ -50,6 +51,7 @@ public class DelegatingWebMvcConfiguration extends WebMvcConfigurationSupport {
 		this.configurers.addWebMvcConfigurers(configurers);
 	}
 
+
 	@Override
 	protected void addInterceptors(InterceptorRegistry registry) {
 		this.configurers.addInterceptors(registry);