Skip transaction/caching metadata retrieval for java.lang.Object methods

Also retrieves CacheConfig as merged annotation now, aligned with other caching annotations.

Issue: SPR-15296

spring-context/src/main/java/org/springframework/cache/annotation/SpringCacheAnnotationParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -28,7 +28,6 @@ import org.springframework.cache.interceptor.CacheOperation;
 import org.springframework.cache.interceptor.CachePutOperation;
 import org.springframework.cache.interceptor.CacheableOperation;
 import org.springframework.core.annotation.AnnotatedElementUtils;
-import org.springframework.core.annotation.AnnotationUtils;
 import org.springframework.util.ObjectUtils;
 import org.springframework.util.StringUtils;
 
@@ -194,7 +193,7 @@ public class SpringCacheAnnotationParser implements CacheAnnotationParser, Seria
 	 * @return the default config (never {@code null})
 	 */
 	DefaultCacheConfig getDefaultCacheConfig(Class<?> target) {
-		CacheConfig annotation = AnnotationUtils.getAnnotation(target, CacheConfig.class);
+		CacheConfig annotation = AnnotatedElementUtils.getMergedAnnotation(target, CacheConfig.class);
 		if (annotation != null) {
 			return new DefaultCacheConfig(annotation.cacheNames(), annotation.keyGenerator(),
 					annotation.cacheManager(), annotation.cacheResolver());

spring-context/src/main/java/org/springframework/cache/interceptor/AbstractFallbackCacheOperationSource.java

@@ -83,6 +83,10 @@ public abstract class AbstractFallbackCacheOperationSource implements CacheOpera
 	 */
 	@Override
 	public Collection<CacheOperation> getCacheOperations(Method method, Class<?> targetClass) {
+		if (method.getDeclaringClass() == Object.class) {
+			return null;
+		}
+
 		Object cacheKey = getCacheKey(method, targetClass);
 		Collection<CacheOperation> cached = this.attributeCache.get(cacheKey);
 

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -82,6 +82,10 @@ public abstract class AbstractFallbackTransactionAttributeSource implements Tran
 	 */
 	@Override
 	public TransactionAttribute getTransactionAttribute(Method method, Class<?> targetClass) {
+		if (method.getDeclaringClass() == Object.class) {
+			return null;
+		}
+
 		// First, see if we have a cached value.
 		Object cacheKey = getCacheKey(method, targetClass);
 		Object cached = this.attributeCache.get(cacheKey);