Gson giving StackOverflowError

Hey guys. So I'm currently working on a minigame, and when trying to use GSON to serialize (and deserialize) my Generator object which just generates items, I am getting a StackOverflowError. I've Googled to no avail, so am looking for help here. The problem is likely a dumb move from me, not making a field transient or something (although I'm using a manual TypeAdapter which shouldn't be affected by transient fields AFAIK).

This is the error (repeats a couple of hundred times to fill up most of the console)

Code (Text):

        at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:375)
        at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:380)
        at com.google.gson.internal.$Gson$Types.res
[18:58:03 WARN]: olve($Gson$Types.java:375)
        at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:380)
        at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:375)
        at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:380)
        at com.google.gson.internal.$Gson$Types.resolve($Gson$Types.java:355)
        at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:117)
 

I know how to read a stack-trace, and from what I can tell it's nothing to do with my code, the closest piece of info I could find after Googling was that there's some sort of recursive field dependencies. Originally I was serializing the contents of my Locations class (which I still intend to do, I simply changed it for debugging), which has a Set of all the Generators. Same error as only serializing one generator. Also, these are the only fields in my Generator class so I don't think it's recursive dependencies:

Code (Java):

private final GeneratorType generatorType;
    private final Location[] locations;
    private final Location root;

    //* For serialization purposes
    private final boolean withHologram;
    private transient final AtomicInteger timeUntilEvolve;
    private transient final Placeholder time;
    private transient final Placeholder level;
    private transient AtomicInteger previousUpgradeTimes;
    private transient long timer;
    private GeneratorTier tier;
    private transient ScheduledFuture dropFuture;
    private transient Hologram h;

Finally, here's the contents of my GeneratorSerializer class (YES it has been registered in GsonBuilder before you ask ):

Spoiler

Code (Java):

public class GeneratorSerializer extends TypeAdapter<Generator> {

    public GeneratorSerializer() {
        super();
    }

    @Override
    public void write(JsonWriter out, Generator value) throws IOException {
        out.beginObject();
        if (value.isWithHologram()) {
            out.name("hologram").value(value.getH().getId());
        }
        out.name("type").value(value.getGeneratorType().name());
        out.name("root").value(Bedwars.getGson().toJson(value.getRoot()));
//        val locs = out.name("locations").beginArray();
//        int x = 0;
//        locs.name(String.valueOf(x)).value(Bedwars.getGson().toJson(value.getLocations()[x]));
//        locs.endArray();
        out.endObject();
        out.flush();
        out.close();
    }

    @SuppressWarnings ("unchecked")
    @Override
    public Generator read(JsonReader in) throws IOException {
        in.beginObject();
        Hologram hologram = null;
        GeneratorType type = null;
        Location root = null;
        String nextName;
        do {
            nextName = in.nextString();
            switch (nextName.toLowerCase()) {
                case "hologram":
                    String s = in.nextString();
                    hologram = Bedwars.getManager().getHologram(s);
                    break;
                case "type":
                    type = GeneratorType.valueOf(in.nextString());
                    break;
                case "root":
                    root = Bedwars.getGson().fromJson(in.nextString(), Location.class);
                    break;
            }
        } while (in.hasNext());
        in.endObject();
        in.close();
        Validate.notNull(type, "GeneratorType");
        Validate.notNull(root, "Root Location");
        if (hologram == null) {
            return new Generator(root.getBlock(), type, false);
        }
        return new Generator(root.getBlock(), type, true);
    }

}
 

As always, any help would be massively appreciated (as this is incredibly annoying issue), so thanks guys

 

@2008Choco You are a life-saver - thanks a lot!