Merge branch '3.2.x'

Closes gh-40486

Author: mhalbritter

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/bind/BindableRuntimeHintsRegistrar.java

@@ -39,11 +39,7 @@
 import org.springframework.boot.context.properties.bind.JavaBeanBinder.BeanProperties;
 import org.springframework.boot.context.properties.bind.JavaBeanBinder.BeanProperty;
 import org.springframework.core.KotlinDetector;
-import org.springframework.core.KotlinReflectionParameterNameDiscoverer;
-import org.springframework.core.ParameterNameDiscoverer;
-import org.springframework.core.PrioritizedParameterNameDiscoverer;
 import org.springframework.core.ResolvableType;
-import org.springframework.core.StandardReflectionParameterNameDiscoverer;
 import org.springframework.core.annotation.MergedAnnotations;
 import org.springframework.util.Assert;
 import org.springframework.util.ReflectionUtils;
@@ -92,12 +88,8 @@ public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
 	 * @param hints the hints contributed so far for the deployment unit
 	 */
 	public void registerHints(RuntimeHints hints) {
-		Set<Class<?>> compiledWithoutParameters = new HashSet<>();
 		for (Bindable<?> bindable : this.bindables) {
-			new Processor(bindable, compiledWithoutParameters).process(hints.reflection());
-		}
-		if (!compiledWithoutParameters.isEmpty()) {
-			throw new MissingParametersCompilerArgumentException(compiledWithoutParameters);
+			new Processor(bindable).process(hints.reflection());
 		}
 	}
 
@@ -144,18 +136,7 @@ public static BindableRuntimeHintsRegistrar forBindables(Bindable<?>... bindable
 	/**
 	 * Processor used to register the hints.
 	 */
-	private final class Processor {
-
-		private static final ParameterNameDiscoverer parameterNameDiscoverer;
-
-		static {
-			PrioritizedParameterNameDiscoverer discoverer = new PrioritizedParameterNameDiscoverer();
-			if (KotlinDetector.isKotlinReflectPresent()) {
-				discoverer.addDiscoverer(new KotlinReflectionParameterNameDiscoverer());
-			}
-			discoverer.addDiscoverer(new StandardReflectionParameterNameDiscoverer());
-			parameterNameDiscoverer = discoverer;
-		}
+	private static final class Processor {
 
 		private final Class<?> type;
 
@@ -165,21 +146,17 @@ private final class Processor {
 
 		private final Set<Class<?>> seen;
 
-		private final Set<Class<?>> compiledWithoutParameters;
-
-		Processor(Bindable<?> bindable, Set<Class<?>> compiledWithoutParameters) {
-			this(bindable, false, new HashSet<>(), compiledWithoutParameters);
+		Processor(Bindable<?> bindable) {
+			this(bindable, false, new HashSet<>());
 		}
 
-		private Processor(Bindable<?> bindable, boolean nestedType, Set<Class<?>> seen,
-				Set<Class<?>> compiledWithoutParameters) {
+		private Processor(Bindable<?> bindable, boolean nestedType, Set<Class<?>> seen) {
 			this.type = bindable.getType().getRawClass();
 			this.bindConstructor = (bindable.getBindMethod() != BindMethod.JAVA_BEAN)
 					? BindConstructorProvider.DEFAULT.getBindConstructor(bindable.getType().resolve(), nestedType)
 					: null;
 			this.bean = JavaBeanBinder.BeanProperties.of(bindable);
 			this.seen = seen;
-			this.compiledWithoutParameters = compiledWithoutParameters;
 		}
 
 		void process(ReflectionHints hints) {
@@ -198,7 +175,6 @@ else if (this.bean != null && !this.bean.getProperties().isEmpty()) {
 
 		private void handleConstructor(ReflectionHints hints) {
 			if (this.bindConstructor != null) {
-				verifyParameterNamesAreAvailable();
 				if (KotlinDetector.isKotlinType(this.bindConstructor.getDeclaringClass())) {
 					KotlinDelegate.handleConstructor(hints, this.bindConstructor);
 				}
@@ -213,13 +189,6 @@ private void handleConstructor(ReflectionHints hints) {
 				.ifPresent((constructor) -> hints.registerConstructor(constructor, ExecutableMode.INVOKE));
 		}
 
-		private void verifyParameterNamesAreAvailable() {
-			String[] parameterNames = parameterNameDiscoverer.getParameterNames(this.bindConstructor);
-			if (parameterNames == null) {
-				this.compiledWithoutParameters.add(this.bindConstructor.getDeclaringClass());
-			}
-		}
-
 		private boolean hasNoParameters(Constructor<?> candidate) {
 			return candidate.getParameterCount() == 0;
 		}
@@ -268,7 +237,7 @@ else if (isNestedType(propertyName, propertyClass)) {
 		}
 
 		private void processNested(Class<?> type, ReflectionHints hints) {
-			new Processor(Bindable.of(type), true, this.seen, this.compiledWithoutParameters).process(hints);
+			new Processor(Bindable.of(type), true, this.seen).process(hints);
 		}
 
 		private Class<?> getComponentClass(ResolvableType type) {

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/bind/MissingParametersCompilerArgumentException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2023 the original author or authors.
+ * Copyright 2012-2024 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.
@@ -24,6 +24,7 @@
 import java.util.Map;
 import java.util.function.Consumer;
 
+import org.apache.tomcat.jdbc.pool.PoolProperties;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.aot.hint.ExecutableHint;
@@ -41,9 +42,11 @@
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.ApplicationContextAware;
 import org.springframework.context.EnvironmentAware;
+import org.springframework.core.StandardReflectionParameterNameDiscoverer;
 import org.springframework.core.env.Environment;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatNoException;
 
 /**
  * Tests for {@link BindableRuntimeHintsRegistrar}.
@@ -279,6 +282,16 @@ void registerHintsWhenHasComplexNestedProperties() {
 			.satisfies(javaBeanBinding(ComplexNestedProperties.class, "getSimple"));
 	}
 
+	@Test
+	void registerHintsDoesNotThrowWhenParameterInformationForConstructorBindingIsNotAvailable()
+			throws NoSuchMethodException, SecurityException {
+		Constructor<?> constructor = PoolProperties.InterceptorProperty.class.getConstructor(String.class,
+				String.class);
+		String[] parameterNames = new StandardReflectionParameterNameDiscoverer().getParameterNames(constructor);
+		assertThat(parameterNames).isNull();
+		assertThatNoException().isThrownBy(() -> registerHints(PoolProperties.class));
+	}
+
 	private Consumer<TypeHint> javaBeanBinding(Class<?> type, String... expectedMethods) {
 		return javaBeanBinding(type, type.getDeclaredConstructors()[0], expectedMethods);
 	}