Codecs

Creating a Codec for NamespacedKey

Codec<NamespacedKey> CODEC = Codecs.STRING.xmap(NamespacedKey::fromString, NamespacedKey::toString)

Then you would simply call CODEC.serialize(DynamicOps, key) for serialization and CODEC.deserialize(DynamicOps, data) for deserialization (data must be correct type, e.g for YamlOps it is Map<String, Object>)

Setting up Codec for a record with 3 vars

public record Example(String name, int age, float money) {
    public static final Codec<Exmaple> CODEC = RecordCodecBuilder.create(
            Codecs.STRING.fieldOf("name", Example::name),
            Codecs.INT.fieldOf("age", Example::age),
            Codecs.FLOAT.fieldOf("money", Example::money),
            Example::new
    );

}

Then simply call as was shown for NamespacedKey to serialize/deserialize.

23 November 2025