Return early for Date to BsonDateTime conversion

Add missing return statement to return value early instead of falling back to Codec based conversion.

Closes: #5072

Author: christophstrobl

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/util/BsonUtils.java

@@ -344,7 +344,7 @@ public static BsonValue simpleToBsonValue(@Nullable Object source) {
 	 * @throws IllegalArgumentException if {@literal source} does not correspond to a {@link BsonValue} type.
 	 * @since 4.2
 	 */
-	@SuppressWarnings("unchecked")
+	@SuppressWarnings({ "unchecked", "rawtypes" })
 	@Contract("null, _ -> !null")
 	public static BsonValue simpleToBsonValue(@Nullable Object source, CodecRegistry codecRegistry) {
 
@@ -393,7 +393,7 @@ public static BsonValue simpleToBsonValue(@Nullable Object source, CodecRegistry
 		}
 
 		if (source instanceof Date date) {
-			new BsonDateTime(date.getTime());
+			return new BsonDateTime(date.getTime());
 		}
 
 		try {

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/util/json/BsonUtilsTest.java

@@ -33,6 +33,7 @@
 import java.util.stream.Stream;
 
 import org.bson.BsonArray;
+import org.bson.BsonDateTime;
 import org.bson.BsonDouble;
 import org.bson.BsonInt32;
 import org.bson.BsonInt64;
@@ -151,6 +152,13 @@ void convertsJavaTimeTypesToBsonDateTime(Temporal source) {
 				.isEqualTo(new Document("value", source).toBsonDocument().get("value"));
 	}
 
+	@Test // GH-5072
+	void convertsJavaDateToBsonDateTime() {
+
+		Date source = new Date();
+		assertThat(BsonUtils.simpleToBsonValue(source)).isEqualTo(new BsonDateTime(source.getTime()));
+	}
+
 	@ParameterizedTest // GH-4432
 	@MethodSource("collectionLikeInstances")
 	void convertsCollectionLikeToBsonArray(Object source) {