Same method filtering in ConstructorResolver and getTypeForFactoryMethod

Issue: SPR-16999

(cherry picked from commit 0052c89)

spring-beans/src/main/java/org/springframework/beans/factory/support/AbstractAutowireCapableBeanFactory.java

@@ -695,19 +695,18 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 		Method uniqueCandidate = null;
 		int minNrOfArgs = mbd.getConstructorArgumentValues().getArgumentCount();
 		Method[] candidates = ReflectionUtils.getUniqueDeclaredMethods(factoryClass);
-		for (Method factoryMethod : candidates) {
-			if (Modifier.isStatic(factoryMethod.getModifiers()) == isStatic &&
-					factoryMethod.getName().equals(mbd.getFactoryMethodName()) &&
-					factoryMethod.getParameterTypes().length >= minNrOfArgs) {
+		for (Method candidate : candidates) {
+			if (Modifier.isStatic(candidate.getModifiers()) == isStatic && mbd.isFactoryMethod(candidate) &&
+					candidate.getParameterTypes().length >= minNrOfArgs) {
 				// Declared type variables to inspect?
-				if (factoryMethod.getTypeParameters().length > 0) {
+				if (candidate.getTypeParameters().length > 0) {
 					try {
 						// Fully resolve parameter names and argument values.
-						Class<?>[] paramTypes = factoryMethod.getParameterTypes();
+						Class<?>[] paramTypes = candidate.getParameterTypes();
 						String[] paramNames = null;
 						ParameterNameDiscoverer pnd = getParameterNameDiscoverer();
 						if (pnd != null) {
-							paramNames = pnd.getParameterNames(factoryMethod);
+							paramNames = pnd.getParameterNames(candidate);
 						}
 						ConstructorArgumentValues cav = mbd.getConstructorArgumentValues();
 						Set<ConstructorArgumentValues.ValueHolder> usedValueHolders =
@@ -725,10 +724,10 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 							}
 						}
 						Class<?> returnType = AutowireUtils.resolveReturnTypeForFactoryMethod(
-								factoryMethod, args, getBeanClassLoader());
+								candidate, args, getBeanClassLoader());
 						if (returnType != null) {
-							uniqueCandidate = (commonType == null && returnType == factoryMethod.getReturnType() ?
-									factoryMethod : null);
+							uniqueCandidate = (commonType == null && returnType == candidate.getReturnType() ?
+									candidate : null);
 							commonType = ClassUtils.determineCommonAncestor(returnType, commonType);
 							if (commonType == null) {
 								// Ambiguous return types found: return null to indicate "not determinable".
@@ -743,8 +742,8 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 					}
 				}
 				else {
-					uniqueCandidate = (commonType == null ? factoryMethod : null);
-					commonType = ClassUtils.determineCommonAncestor(factoryMethod.getReturnType(), commonType);
+					uniqueCandidate = (commonType == null ? candidate : null);
+					commonType = ClassUtils.determineCommonAncestor(candidate.getReturnType(), commonType);
 					if (commonType == null) {
 						// Ambiguous return types found: return null to indicate "not determinable".
 						return null;
@@ -1057,7 +1056,7 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 	 * @param beanName the name of the bean
 	 * @param mbd the bean definition for the bean
 	 * @param args explicit arguments to use for constructor or factory method invocation
-	 * @return BeanWrapper for the new instance
+	 * @return a BeanWrapper for the new instance
 	 * @see #instantiateUsingFactoryMethod
 	 * @see #autowireConstructor
 	 * @see #instantiateBean
@@ -1137,7 +1136,7 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 	 * Instantiate the given bean using its default constructor.
 	 * @param beanName the name of the bean
 	 * @param mbd the bean definition for the bean
-	 * @return BeanWrapper for the new instance
+	 * @return a BeanWrapper for the new instance
 	 */
 	protected BeanWrapper instantiateBean(final String beanName, final RootBeanDefinition mbd) {
 		try {
@@ -1172,7 +1171,7 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 	 * @param mbd the bean definition for the bean
 	 * @param explicitArgs argument values passed in programmatically via the getBean method,
 	 * or {@code null} if none (-> use constructor argument values from bean definition)
-	 * @return BeanWrapper for the new instance
+	 * @return a BeanWrapper for the new instance
 	 * @see #getBean(String, Object[])
 	 */
 	protected BeanWrapper instantiateUsingFactoryMethod(
@@ -1193,7 +1192,7 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 	 * @param ctors the chosen candidate constructors
 	 * @param explicitArgs argument values passed in programmatically via the getBean method,
 	 * or {@code null} if none (-> use constructor argument values from bean definition)
-	 * @return BeanWrapper for the new instance
+	 * @return a BeanWrapper for the new instance
 	 */
 	protected BeanWrapper autowireConstructor(
 			String beanName, RootBeanDefinition mbd, Constructor<?>[] ctors, Object[] explicitArgs) {
@@ -1206,7 +1205,7 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 	 * from the bean definition.
 	 * @param beanName the name of the bean
 	 * @param mbd the bean definition for the bean
-	 * @param bw BeanWrapper with bean instance
+	 * @param bw the BeanWrapper with bean instance
 	 */
 	protected void populateBean(String beanName, RootBeanDefinition mbd, BeanWrapper bw) {
 		PropertyValues pvs = mbd.getPropertyValues();
@@ -1290,7 +1289,7 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 	 * @param beanName the name of the bean we're wiring up.
 	 * Useful for debugging messages; not used functionally.
 	 * @param mbd bean definition to update through autowiring
-	 * @param bw BeanWrapper from which we can obtain information about the bean
+	 * @param bw the BeanWrapper from which we can obtain information about the bean
 	 * @param pvs the PropertyValues to register wired objects with
 	 */
 	protected void autowireByName(
@@ -1324,7 +1323,7 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 	 * behavior for bigger applications.
 	 * @param beanName the name of the bean to autowire by type
 	 * @param mbd the merged bean definition to update through autowiring
-	 * @param bw BeanWrapper from which we can obtain information about the bean
+	 * @param bw the BeanWrapper from which we can obtain information about the bean
 	 * @param pvs the PropertyValues to register wired objects with
 	 */
 	protected void autowireByType(

spring-context/src/test/java/org/springframework/context/annotation/ConfigurationClassPostProcessorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -22,6 +22,7 @@ import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 import java.util.Arrays;
 import java.util.List;
+import java.util.Map;
 import javax.annotation.PostConstruct;
 
 import org.junit.Before;
@@ -783,6 +784,15 @@ public class ConfigurationClassPostProcessorTests {
 		assertSame(ctx.getBean(TestBean.class), bean.testBeans.get(0));
 	}
 
+	@Test
+	public void testMapInjectionFromSameConfigurationClass() {
+		ApplicationContext ctx = new AnnotationConfigApplicationContext(MapInjectionConfiguration.class);
+		MapInjectionConfiguration bean = ctx.getBean(MapInjectionConfiguration.class);
+		assertNotNull(bean.testBeans);
+		assertEquals(1, bean.testBeans.size());
+		assertSame(ctx.getBean(Runnable.class), bean.testBeans.get("testBean"));
+	}
+
 	@Test
 	public void testBeanLookupFromSameConfigurationClass() {
 		ApplicationContext ctx = new AnnotationConfigApplicationContext(BeanLookupConfiguration.class);
@@ -1468,6 +1478,23 @@ public class ConfigurationClassPostProcessorTests {
 		}
 	}
 
+	@Configuration
+	public static class MapInjectionConfiguration {
+
+		@Autowired
+		private Map<String, Runnable> testBeans;
+
+		@Bean
+		Runnable testBean() {
+			return () -> {};
+		}
+
+		// Unrelated, not to be considered as a factory method
+		private boolean testBean(boolean param) {
+			return param;
+		}
+	}
+
 	@Configuration
 	static abstract class BeanLookupConfiguration {