Register reflection hints for date ObjectToObjectConverter conventions

Closes gh-29429

Author: sdeleuze

spring-core/src/main/java/org/springframework/core/convert/support/ObjectToObjectConverterRuntimeHints.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2002-2022 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.core.convert.support;
+
+import java.time.LocalDate;
+import java.util.Collections;
+import java.util.List;
+
+import org.springframework.aot.hint.ExecutableMode;
+import org.springframework.aot.hint.RuntimeHints;
+import org.springframework.aot.hint.RuntimeHintsRegistrar;
+import org.springframework.aot.hint.TypeReference;
+import org.springframework.lang.Nullable;
+
+/**
+ * {@link RuntimeHintsRegistrar} to register hints for {@link ObjectToObjectConverter}
+ * popular conventions.
+ *
+ * @author Sebastien Deleuze
+ * @since 6.0
+ */
+class ObjectToObjectConverterRuntimeHints implements RuntimeHintsRegistrar {
+
+	@Override
+	public void registerHints(RuntimeHints hints, @Nullable ClassLoader classLoader) {
+		TypeReference sqlDateTypeReference = TypeReference.of("java.sql.Date");
+		hints.reflection().registerTypeIfPresent(classLoader, sqlDateTypeReference.getName(), hint -> hint
+				.withMethod("toLocalDate", Collections.emptyList(), ExecutableMode.INVOKE)
+				.onReachableType(sqlDateTypeReference)
+				.withMethod("valueOf", List.of(TypeReference.of(LocalDate.class)), ExecutableMode.INVOKE)
+				.onReachableType(sqlDateTypeReference));
+	}
+}

spring-core/src/main/resources/META-INF/spring/aot.factories

@@ -1,2 +1,3 @@
 org.springframework.aot.hint.RuntimeHintsRegistrar=\
-org.springframework.aot.hint.support.SpringFactoriesLoaderRuntimeHints
+org.springframework.aot.hint.support.SpringFactoriesLoaderRuntimeHints,\
+org.springframework.core.convert.support.ObjectToObjectConverterRuntimeHints

spring-core/src/test/java/org/springframework/core/convert/support/ObjectToObjectConverterRuntimeHintsTests.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2002-2022 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.core.convert.support;
+
+import java.time.LocalDate;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.aot.hint.RuntimeHints;
+import org.springframework.aot.hint.RuntimeHintsRegistrar;
+import org.springframework.aot.hint.predicate.RuntimeHintsPredicates;
+import org.springframework.core.io.support.SpringFactoriesLoader;
+import org.springframework.util.ClassUtils;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link ObjectToObjectConverterRuntimeHints}.
+ *
+ * @author Sebastien Deleuze
+ */
+class ObjectToObjectConverterRuntimeHintsTests {
+
+	private RuntimeHints hints;
+
+	@BeforeEach
+	void setup() {
+		this.hints = new RuntimeHints();
+		SpringFactoriesLoader.forResourceLocation("META-INF/spring/aot.factories")
+				.load(RuntimeHintsRegistrar.class).forEach(registrar -> registrar
+						.registerHints(this.hints, ClassUtils.getDefaultClassLoader()));
+	}
+
+	@Test
+	void javaSqlDateHasHints() throws NoSuchMethodException {
+		assertThat(RuntimeHintsPredicates.reflection().onMethod(java.sql.Date.class, "toLocalDate")).accepts(this.hints);
+		assertThat(RuntimeHintsPredicates.reflection().onMethod(java.sql.Date.class.getMethod("valueOf", LocalDate.class))).accepts(this.hints);
+	}
+
+}