GH-2354 - Upgrade to Jackson 2.20 RC1.

Author: odrotbohm

pom.xml

@@ -77,7 +77,7 @@
 		<logback.version>1.5.18</logback.version>
 		<jacoco>0.8.12</jacoco>
 		<jacoco.destfile>${project.build.directory}/jacoco.exec</jacoco.destfile>
-		<jackson-bom.version>2.19.2</jackson-bom.version>
+		<jackson-bom.version>2.20.0-rc1</jackson-bom.version>
 		<java-module-name>spring.hateoas</java-module-name>
 		<jsonpath.version>2.9.0</jsonpath.version>
 		<junit.version>5.13.4</junit.version>

src/main/java/org/springframework/hateoas/mediatype/hal/Jackson2HalModule.java

@@ -54,7 +54,6 @@
 import com.fasterxml.jackson.core.Version;
 import com.fasterxml.jackson.databind.*;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies.NamingBase;
-import com.fasterxml.jackson.databind.PropertyNamingStrategy.PropertyNamingStrategyBase;
 import com.fasterxml.jackson.databind.deser.ContextualDeserializer;
 import com.fasterxml.jackson.databind.deser.std.ContainerDeserializerBase;
 import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper;
@@ -848,9 +847,9 @@ private EmbeddedMapper(LinkRelationProvider relProvider, CurieProvider curieProv
 		 */
 		public EmbeddedMapper with(@Nullable PropertyNamingStrategy strategy) {
 
-			Function<String, String> mapper = strategy instanceof PropertyNamingStrategyBase
-					? ((PropertyNamingStrategyBase) strategy)::translate
-					: strategy instanceof NamingBase ? ((NamingBase) strategy)::translate : null;
+			Function<String, String> mapper = strategy instanceof NamingBase
+					? ((NamingBase) strategy)::translate
+					: null;
 
 			return mapper == null
 					? this

src/test/java/org/springframework/hateoas/mediatype/hal/Jackson2HalIntegrationTest.java

@@ -19,7 +19,6 @@
 
 import net.minidev.json.JSONArray;
 import net.minidev.json.JSONObject;
-import org.jspecify.annotations.Nullable;
 
 import java.io.IOException;
 import java.util.ArrayList;
@@ -32,6 +31,7 @@
 import java.util.Map;
 import java.util.stream.Stream;
 
+import org.jspecify.annotations.Nullable;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.springframework.context.MessageSource;
@@ -60,7 +60,7 @@
 import com.fasterxml.jackson.databind.JavaType;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.PropertyNamingStrategy;
+import com.fasterxml.jackson.databind.PropertyNamingStrategies.SnakeCaseStrategy;
 import com.fasterxml.jackson.databind.SerializationFeature;
 import com.fasterxml.jackson.databind.type.TypeFactory;
 import com.jayway.jsonpath.Configuration;
@@ -538,7 +538,7 @@ void forwardsPropertyNamingStrategyToNonIanaLinkRelations() throws JsonProcessin
 		model.add(Link.of("/foo/form", IanaLinkRelations.EDIT_FORM));
 
 		ObjectMapper objectMapper = mapper.copy() //
-				.setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE) //
+				.setPropertyNamingStrategy(SnakeCaseStrategy.INSTANCE) //
 				.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);
 
 		String result = objectMapper.writeValueAsString(model);
@@ -560,7 +560,7 @@ void doesNotApplyPropertyNamingStrategyToLinkRelationsIfConfigurationOptsOut() t
 
 		ObjectMapper mapper = HalTestUtils.halObjectMapper(new HalConfiguration() //
 				.withApplyPropertyNamingStrategy(false)) //
-				.setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE) //
+				.setPropertyNamingStrategy(SnakeCaseStrategy.INSTANCE) //
 				.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);
 
 		String result = mapper.writeValueAsString(model);