Add UUID support to JsonKeysetCursorStrategy

Author: heruan

spring-graphql/src/main/java/org/springframework/graphql/data/query/JsonKeysetCursorStrategy.java

@@ -21,6 +21,7 @@
 import java.util.Collections;
 import java.util.Date;
 import java.util.Map;
+import java.util.UUID;
 
 import tools.jackson.databind.DefaultTyping;
 import tools.jackson.databind.ObjectMapper;
@@ -157,6 +158,7 @@ static void customize(CodecConfigurer configurer) {
 					.allowIfSubType("java.time.")
 					.allowIfSubType(Calendar.class)
 					.allowIfSubType(Date.class)
+					.allowIfSubType(UUID.class)
 					.build();
 
 			JsonMapper mapper = JsonMapper.builder()
@@ -185,6 +187,7 @@ static void customize(CodecConfigurer configurer) {
 					.allowIfSubType("java.time.")
 					.allowIfSubType(Calendar.class)
 					.allowIfSubType(Date.class)
+					.allowIfSubType(UUID.class)
 					.build();
 
 			com.fasterxml.jackson.databind.ObjectMapper mapper = Jackson2ObjectMapperBuilder.json().build();

spring-graphql/src/test/java/org/springframework/graphql/data/query/JsonKeysetCursorStrategyTests.java

@@ -23,6 +23,7 @@
 import java.util.Date;
 import java.util.LinkedHashMap;
 import java.util.Map;
+import java.util.UUID;
 
 import org.junit.jupiter.api.Test;
 
@@ -78,4 +79,16 @@ void toAndFromCursorWithZonedDateTime() {
 		assertThat(this.cursorStrategy.fromCursor(json)).isEqualTo(keys);
 	}
 
+	@Test
+	void toAndFromCursorWithUUID() {
+
+		UUID uuid = UUID.randomUUID();
+
+		Map<String, Object> keys = new LinkedHashMap<>();
+		keys.put("uuid", uuid);
+		String json = "[\"java.util.LinkedHashMap\",{\"uuid\":[\"java.util.UUID\",\"" + uuid + "\"]}]";
+
+		assertThat(this.cursorStrategy.toCursor(keys)).isEqualTo(json);
+		assertThat(this.cursorStrategy.fromCursor(json)).isEqualTo(keys);
+	}
 }