Use Integer as database column type for java.time.Year.

Previously, that case was handled by the registration for Temporal, which maps the type to a Timestamp, which doesn't make sense for Year.

Author: odrotbohm

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/JdbcColumnTypes.java

@@ -18,6 +18,7 @@
 import java.sql.Timestamp;
 import java.time.LocalDateTime;
 import java.time.OffsetDateTime;
+import java.time.Year;
 import java.time.ZonedDateTime;
 import java.time.temporal.Temporal;
 import java.util.LinkedHashMap;
@@ -40,6 +41,7 @@ public enum JdbcColumnTypes {
 
 		private final ConcurrentLruCache<Class<?>, Class<?>> cache = new ConcurrentLruCache<>(64, this::doResolve);
 
+		@Override
 		@SuppressWarnings({ "unchecked", "rawtypes" })
 		public Class<?> resolvePrimitiveType(Class<?> type) {
 			return cache.get(type);
@@ -62,6 +64,7 @@ private Class<?> doResolve(Class<?> type) {
 		javaToDbType.put(ZonedDateTime.class, String.class);
 		javaToDbType.put(OffsetDateTime.class, OffsetDateTime.class);
 		javaToDbType.put(LocalDateTime.class, LocalDateTime.class);
+		javaToDbType.put(Year.class, Integer.class);
 		javaToDbType.put(Temporal.class, Timestamp.class);
 	}
 

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/core/convert/JdbcColumnTypesUnitTests.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2025 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.data.jdbc.core.convert;
+
+import static org.assertj.core.api.Assertions.*;
+
+import java.time.Year;
+
+import org.junit.jupiter.api.Test;
+
+/**
+ * Unit tests for {@link JdbcColumnTypes}.
+ *
+ * @author Oliver Drotbohm
+ */
+class JdbcColumnTypesUnitTests {
+
+	@Test
+	void usesIntegerForYear() {
+		assertThat(JdbcColumnTypes.INSTANCE.resolvePrimitiveType(Year.class)).isEqualTo(Integer.class);
+	}
+}