Deprecate InstantiationAwareBeanPostProcessorAdapter

Consistently relying on default methods in the corresponding interfaces.

Closes gh-25165

spring-beans/src/main/java/org/springframework/beans/factory/annotation/AutowiredAnnotationBeanPostProcessor.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.
@@ -50,7 +50,7 @@ import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.beans.factory.UnsatisfiedDependencyException;
 import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
 import org.springframework.beans.factory.config.DependencyDescriptor;
-import org.springframework.beans.factory.config.InstantiationAwareBeanPostProcessorAdapter;
+import org.springframework.beans.factory.config.SmartInstantiationAwareBeanPostProcessor;
 import org.springframework.beans.factory.support.LookupOverride;
 import org.springframework.beans.factory.support.MergedBeanDefinitionPostProcessor;
 import org.springframework.beans.factory.support.RootBeanDefinition;
@@ -128,8 +128,8 @@ import org.springframework.util.StringUtils;
  * @see Autowired
  * @see Value
  */
-public class AutowiredAnnotationBeanPostProcessor extends InstantiationAwareBeanPostProcessorAdapter
-		implements MergedBeanDefinitionPostProcessor, PriorityOrdered, BeanFactoryAware {
+public class AutowiredAnnotationBeanPostProcessor implements SmartInstantiationAwareBeanPostProcessor,
+		MergedBeanDefinitionPostProcessor, PriorityOrdered, BeanFactoryAware {
 
 	protected final Log logger = LogFactory.getLog(getClass());
 

spring-beans/src/main/java/org/springframework/beans/factory/annotation/RequiredAnnotationBeanPostProcessor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 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.
@@ -31,7 +31,7 @@ import org.springframework.beans.factory.BeanFactoryAware;
 import org.springframework.beans.factory.BeanInitializationException;
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
-import org.springframework.beans.factory.config.InstantiationAwareBeanPostProcessorAdapter;
+import org.springframework.beans.factory.config.SmartInstantiationAwareBeanPostProcessor;
 import org.springframework.beans.factory.support.MergedBeanDefinitionPostProcessor;
 import org.springframework.beans.factory.support.RootBeanDefinition;
 import org.springframework.core.Conventions;
@@ -75,8 +75,8 @@ import org.springframework.util.Assert;
  * (or a custom {@link org.springframework.beans.factory.InitializingBean} implementation)
  */
 @Deprecated
-public class RequiredAnnotationBeanPostProcessor extends InstantiationAwareBeanPostProcessorAdapter
-		implements MergedBeanDefinitionPostProcessor, PriorityOrdered, BeanFactoryAware {
+public class RequiredAnnotationBeanPostProcessor implements SmartInstantiationAwareBeanPostProcessor,
+		MergedBeanDefinitionPostProcessor, PriorityOrdered, BeanFactoryAware {
 
 	/**
 	 * Bean definition attribute that may indicate whether a given bean is supposed

spring-beans/src/main/java/org/springframework/beans/factory/config/InstantiationAwareBeanPostProcessorAdapter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 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.
@@ -16,13 +16,6 @@
 
 package org.springframework.beans.factory.config;
 
-import java.beans.PropertyDescriptor;
-import java.lang.reflect.Constructor;
-
-import org.springframework.beans.BeansException;
-import org.springframework.beans.PropertyValues;
-import org.springframework.lang.Nullable;
-
 /**
  * Adapter that implements all methods on {@link SmartInstantiationAwareBeanPostProcessor}
  * as no-ops, which will not change normal processing of each bean instantiated
@@ -37,60 +30,10 @@ import org.springframework.lang.Nullable;
  * @author Rod Johnson
  * @author Juergen Hoeller
  * @since 2.0
+ * @deprecated as of 5.3 in favor of implementing {@link InstantiationAwareBeanPostProcessor}
+ * or {@link SmartInstantiationAwareBeanPostProcessor} directly.
  */
+@Deprecated
 public abstract class InstantiationAwareBeanPostProcessorAdapter implements SmartInstantiationAwareBeanPostProcessor {
 
-	@Override
-	@Nullable
-	public Class<?> predictBeanType(Class<?> beanClass, String beanName) throws BeansException {
-		return null;
-	}
-
-	@Override
-	@Nullable
-	public Constructor<?>[] determineCandidateConstructors(Class<?> beanClass, String beanName) throws BeansException {
-		return null;
-	}
-
-	@Override
-	public Object getEarlyBeanReference(Object bean, String beanName) throws BeansException {
-		return bean;
-	}
-
-	@Override
-	@Nullable
-	public Object postProcessBeforeInstantiation(Class<?> beanClass, String beanName) throws BeansException {
-		return null;
-	}
-
-	@Override
-	public boolean postProcessAfterInstantiation(Object bean, String beanName) throws BeansException {
-		return true;
-	}
-
-	@Override
-	public PropertyValues postProcessProperties(PropertyValues pvs, Object bean, String beanName)
-			throws BeansException {
-
-		return null;
-	}
-
-	@Deprecated
-	@Override
-	public PropertyValues postProcessPropertyValues(
-			PropertyValues pvs, PropertyDescriptor[] pds, Object bean, String beanName) throws BeansException {
-
-		return pvs;
-	}
-
-	@Override
-	public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
-		return bean;
-	}
-
-	@Override
-	public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
-		return bean;
-	}
-
 }

spring-beans/src/test/java/org/springframework/beans/factory/DefaultListableBeanFactoryTests.java

@@ -63,7 +63,7 @@ import org.springframework.beans.factory.config.BeanExpressionContext;
 import org.springframework.beans.factory.config.BeanExpressionResolver;
 import org.springframework.beans.factory.config.BeanPostProcessor;
 import org.springframework.beans.factory.config.ConstructorArgumentValues;
-import org.springframework.beans.factory.config.InstantiationAwareBeanPostProcessorAdapter;
+import org.springframework.beans.factory.config.InstantiationAwareBeanPostProcessor;
 import org.springframework.beans.factory.config.PropertiesFactoryBean;
 import org.springframework.beans.factory.config.RuntimeBeanReference;
 import org.springframework.beans.factory.config.TypedStringValue;
@@ -2747,7 +2747,7 @@ class DefaultListableBeanFactoryTests {
 		bd.getPropertyValues().addPropertyValue(new PropertyValue("age", ageSetByPropertyValue));
 		lbf.registerBeanDefinition("test", bd);
 		final String nameSetOnField = "nameSetOnField";
-		lbf.addBeanPostProcessor(new InstantiationAwareBeanPostProcessorAdapter() {
+		lbf.addBeanPostProcessor(new InstantiationAwareBeanPostProcessor() {
 			@Override
 			public boolean postProcessAfterInstantiation(Object bean, String beanName) throws BeansException {
 				TestBean tb = (TestBean) bean;

spring-beans/src/test/java/org/springframework/beans/factory/support/Spr8954Tests.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.
@@ -24,7 +24,7 @@ import org.junit.jupiter.api.Test;
 
 import org.springframework.beans.factory.FactoryBean;
 import org.springframework.beans.factory.config.InstantiationAwareBeanPostProcessor;
-import org.springframework.beans.factory.config.InstantiationAwareBeanPostProcessorAdapter;
+import org.springframework.beans.factory.config.SmartInstantiationAwareBeanPostProcessor;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -125,7 +125,7 @@ public class Spr8954Tests {
 	static class PredictedTypeImpl implements PredictedType {
 	}
 
-	static class PredictingBPP extends InstantiationAwareBeanPostProcessorAdapter {
+	static class PredictingBPP implements SmartInstantiationAwareBeanPostProcessor {
 
 		@Override
 		public Class<?> predictBeanType(Class<?> beanClass, String beanName) {