Register reflection hints for ApplicationProperties

Closes gh-42038

Author: mhalbritter

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/ApplicationProperties.java

@@ -20,6 +20,7 @@
 import java.util.Set;
 
 import org.springframework.boot.Banner.Mode;
+import org.springframework.boot.context.properties.bind.BindableRuntimeHintsRegistrar;
 import org.springframework.boot.logging.LoggingSystemProperty;
 import org.springframework.core.env.Environment;
 
@@ -156,4 +157,12 @@ void setWebApplicationType(WebApplicationType webApplicationType) {
 		this.webApplicationType = webApplicationType;
 	}
 
+	static class ApplicationPropertiesRuntimeHints extends BindableRuntimeHintsRegistrar {
+
+		ApplicationPropertiesRuntimeHints() {
+			super(ApplicationProperties.class);
+		}
+
+	}
+
 }

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/SpringApplication.java

@@ -58,7 +58,6 @@
 import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
 import org.springframework.boot.Banner.Mode;
 import org.springframework.boot.context.properties.bind.Bindable;
-import org.springframework.boot.context.properties.bind.BindableRuntimeHintsRegistrar;
 import org.springframework.boot.context.properties.bind.Binder;
 import org.springframework.boot.context.properties.source.ConfigurationPropertySources;
 import org.springframework.boot.convert.ApplicationConversionService;
@@ -1594,14 +1593,6 @@ public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory)
 
 	}
 
-	static class SpringApplicationRuntimeHints extends BindableRuntimeHintsRegistrar {
-
-		SpringApplicationRuntimeHints() {
-			super(SpringApplication.class);
-		}
-
-	}
-
 	/**
 	 * Exception that can be thrown to silently exit a running {@link SpringApplication}
 	 * without handling run failures.

spring-boot-project/spring-boot/src/main/resources/META-INF/spring/aot.factories

@@ -1,5 +1,5 @@
 org.springframework.aot.hint.RuntimeHintsRegistrar=\
-org.springframework.boot.SpringApplication.SpringApplicationRuntimeHints,\
+org.springframework.boot.ApplicationProperties.ApplicationPropertiesRuntimeHints,\
 org.springframework.boot.SpringApplicationBannerPrinter.SpringApplicationBannerPrinterRuntimeHints,\
 org.springframework.boot.WebApplicationType.WebApplicationTypeRuntimeHints,\
 org.springframework.boot.context.config.ConfigDataLocationRuntimeHints,\

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/ApplicationPropertiesTests.java

@@ -18,6 +18,9 @@
 
 import org.junit.jupiter.api.Test;
 
+import org.springframework.aot.hint.RuntimeHints;
+import org.springframework.aot.hint.predicate.RuntimeHintsPredicates;
+import org.springframework.boot.ApplicationProperties.ApplicationPropertiesRuntimeHints;
 import org.springframework.boot.Banner.Mode;
 import org.springframework.mock.env.MockEnvironment;
 
@@ -44,4 +47,19 @@ void bannerModeShouldBeOffIfStructuredLoggingIsEnabled() {
 		assertThat(properties.getBannerMode(environment)).isEqualTo(Mode.OFF);
 	}
 
+	@Test
+	void shouldRegisterHints() {
+		RuntimeHints hints = new RuntimeHints();
+		new ApplicationPropertiesRuntimeHints().registerHints(hints, getClass().getClassLoader());
+		assertThat(RuntimeHintsPredicates.reflection().onType(ApplicationProperties.class)).accepts(hints);
+		assertThat(RuntimeHintsPredicates.reflection().onMethod(ApplicationProperties.class, "setBannerMode"))
+			.accepts(hints);
+		assertThat(RuntimeHintsPredicates.reflection().onMethod(ApplicationProperties.class, "getSources"))
+			.accepts(hints);
+		assertThat(RuntimeHintsPredicates.reflection().onMethod(ApplicationProperties.class, "setSources"))
+			.accepts(hints);
+		assertThat(RuntimeHintsPredicates.reflection().onMethod(ApplicationProperties.class, "getBannerMode"))
+			.rejects(hints);
+	}
+
 }

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/SpringApplicationTests.java

@@ -44,8 +44,6 @@
 import reactor.core.publisher.Mono;
 
 import org.springframework.aot.AotDetector;
-import org.springframework.aot.hint.RuntimeHints;
-import org.springframework.aot.hint.predicate.RuntimeHintsPredicates;
 import org.springframework.beans.factory.BeanCreationException;
 import org.springframework.beans.factory.BeanCurrentlyInCreationException;
 import org.springframework.beans.factory.ObjectProvider;
@@ -58,7 +56,6 @@
 import org.springframework.beans.factory.support.DefaultBeanNameGenerator;
 import org.springframework.boot.Banner.Mode;
 import org.springframework.boot.BootstrapRegistry.InstanceSupplier;
-import org.springframework.boot.SpringApplication.SpringApplicationRuntimeHints;
 import org.springframework.boot.availability.AvailabilityChangeEvent;
 import org.springframework.boot.availability.AvailabilityState;
 import org.springframework.boot.availability.LivenessState;
@@ -1412,18 +1409,6 @@ public void contextLoaded(ConfigurableApplicationContext context) {
 		then(listener).should(never()).onApplicationEvent(any(ApplicationFailedEvent.class));
 	}
 
-	@Test
-	void shouldRegisterHints() {
-		RuntimeHints hints = new RuntimeHints();
-		new SpringApplicationRuntimeHints().registerHints(hints, getClass().getClassLoader());
-		assertThat(RuntimeHintsPredicates.reflection().onType(SpringApplication.class)).accepts(hints);
-		assertThat(RuntimeHintsPredicates.reflection().onMethod(SpringApplication.class, "setBannerMode"))
-			.accepts(hints);
-		assertThat(RuntimeHintsPredicates.reflection().onMethod(SpringApplication.class, "getSources")).accepts(hints);
-		assertThat(RuntimeHintsPredicates.reflection().onMethod(SpringApplication.class, "setSources")).accepts(hints);
-		assertThat(RuntimeHintsPredicates.reflection().onMethod(SpringApplication.class, "load")).rejects(hints);
-	}
-
 	@Test // gh-32555
 	void shouldUseAotInitializer() {
 		SpringApplication application = new SpringApplication(ExampleAotProcessedMainClass.class);