Simplest way to use Java's unmodifiable List classes

[julianhowarth]

This is really basic but I'm missing something about the best way to serialize/deserialize a List of objects. The following shows what I'm hitting but I can't see an answer in the docs:

  @Test
  void foryLoadList() throws IOException {

    var fory = Fory.builder()
        .withLanguage(Language.JAVA)
        .withRefTracking(true)
        .requireClassRegistration(false)
        .build();

    var items = List.of("foo", "bar", "baz");

    try (var outputStream =
             new BufferedOutputStream(Files.newOutputStream(Path.of("output.fory")))) {
      outputStream.write(fory.serializeJavaObject(items));
    }

    try (var input = new BufferedInputStream(Files.newInputStream(Path.of("output.fory")))) {

      var res = (List<String>) fory.deserializeJavaObject(input.readAllBytes(), List.class);

      assertThat(res).isEqualTo(items);
    }
  }

It fails with:

org.apache.fory.exception.DeserializationException: Deserialize failed, read objects are: [null]

	at org.apache.fory.util.ExceptionUtils.handleReadFailed(ExceptionUtils.java:63)
	at org.apache.fory.Fory.deserializeJavaObject(Fory.java:1228)
	at org.apache.fory.Fory.deserializeJavaObject(Fory.java:1199)
	at com.endeavorstreaming.vesper.content_engine.loader.storage.EventSourcingForyTest.foryLoadList(EventSourcingForyTest.java:113)
	at java.base/java.lang.reflect.Method.invoke(Method.java:565)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1604)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1604)
Caused by: java.lang.UnsupportedOperationException: Class interface java.util.List doesn't support serialization.
	at org.apache.fory.resolver.ClassResolver.getSerializerClass(ClassResolver.java:994)
	at org.apache.fory.resolver.ClassResolver.getSerializerClass(ClassResolver.java:988)
	at org.apache.fory.resolver.ClassResolver.createSerializer(ClassResolver.java:1377)
	at org.apache.fory.resolver.ClassResolver.getClassInfo(ClassResolver.java:1250)
	at org.apache.fory.Fory.deserializeJavaObject(Fory.java:1220)
	... 5 more

using version 0.14.1

In my actual use case the list is being generated from a stream.map(...) ... .toList() and we prefer immutable types so I can't just switch to an ArrayList for example. I've noticed that an array would work fine too , but I'd prefer not to have to incur the conversion/copy cost each time it is called.

Is there a simple solution to allow this to work?

[chaokunyang]

just use fory.serialize/deserialize API. I plan to delete serializeJavaObject/deserializeJavaObject

[julianhowarth]

Thanks, that works