"Failed to resolve nEntity index paths" issue

[APPenchev]

I had a problem while trying to serialize org.bukkit.Location

@NTable(name = "lobbies")
public class Lobby extends NEntity<String> {
...

...
@JsonSerialize(using = LocationSerializer.class)
@JsonDeserialize(using = LocationDeserializer.class)
@JsonProperty("pos")
private Location pos;
...

The serializer

public class LocationSerializer extends JsonSerializer<Location> {

    @Override
    public void serialize(Location location, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
        jsonGenerator.writeStartObject();
        jsonGenerator.writeStringField("worldName", location.getWorld().getName());
        jsonGenerator.writeNumberField("x", location.getX());
        jsonGenerator.writeNumberField("y", location.getY());
        jsonGenerator.writeNumberField("z", location.getZ());
        jsonGenerator.writeNumberField("yaw", (double) location.getYaw());
        jsonGenerator.writeNumberField("pitch", (double) location.getPitch());
        jsonGenerator.writeEndObject();
    }
}

The deserializer

public class LocationDeserializer extends JsonDeserializer<Location> {
    @Override
    public Location deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JacksonException {
        JsonNode node = jsonParser.getCodec().readTree(jsonParser);
        String worldName = node.get("worldName").asText();
        double x = node.get("x").asDouble();
        double y = node.get("y").asDouble();
        double z = node.get("z").asDouble();
        float yaw = (float) node.get("yaw").asDouble();
        float pitch = (float) node.get("pitch").asDouble();
        return new Location(Bukkit.getWorld(worldName), x, y, z, yaw, pitch);
    }
}

I use this:

public static Promise.AsyncEmptyResult saveLobby(Lobby lobby) {
      Repository<String, Lobby> lobbyRepository = NDatabase.api().getOrCreateRepository(Lobby.class);
      return lobbyRepository.insertAsync(lobby);
}

This is what I get when I run:

org.bukkit.command.CommandException: Unhandled exception executing command 'pg' in plugin PGUtils v1.0
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47) ~[spigot-api-1.20.4-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:149) ~[spigot-api-1.20.4-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.craftbukkit.v1_20_R3.CraftServer.dispatchCommand(CraftServer.java:887) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at org.bukkit.craftbukkit.v1_20_R3.command.BukkitCommandWrapper.run(BukkitCommandWrapper.java:50) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at com.mojang.brigadier.context.ContextChain.runExecutable(ContextChain.java:73) ~[brigadier-1.2.9.jar:?]
        at net.minecraft.commands.execution.tasks.ExecuteCommand.a(SourceFile:29) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.commands.execution.tasks.ExecuteCommand.execute(SourceFile:13) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.commands.execution.UnboundEntryAction.a(SourceFile:8) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.commands.execution.CommandQueueEntry.a(SourceFile:8) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.commands.execution.ExecutionContext.a(SourceFile:107) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.commands.CommandDispatcher.a(CommandDispatcher.java:413) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.commands.CommandDispatcher.performCommand(CommandDispatcher.java:335) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.commands.CommandDispatcher.a(CommandDispatcher.java:322) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.server.network.PlayerConnection.a(PlayerConnection.java:1856) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.server.network.PlayerConnection.lambda$15(PlayerConnection.java:1818) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.util.thread.IAsyncTaskHandler.b(SourceFile:67) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768) ~[?:?]
        at net.minecraft.server.TickTask.run(SourceFile:18) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.util.thread.IAsyncTaskHandler.d(SourceFile:156) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.util.thread.IAsyncTaskHandlerReentrant.d(SourceFile:23) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:1191) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:1) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.util.thread.IAsyncTaskHandler.x(SourceFile:130) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.server.MinecraftServer.bl(MinecraftServer.java:1170) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.server.MinecraftServer.x(MinecraftServer.java:1163) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.util.thread.IAsyncTaskHandler.c(SourceFile:139) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.server.MinecraftServer.w_(MinecraftServer.java:1147) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1060) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at net.minecraft.server.MinecraftServer.lambda$0(MinecraftServer.java:304) ~[spigot-1.20.4-R0.1-SNAPSHOT.jar:4046-Spigot-c198da2-38fd4bd]
        at java.lang.Thread.run(Thread.java:833) ~[?:?]
Caused by: com.nivixx.ndatabase.api.exception.DatabaseCreationException: Failed to resolve nEntity index paths
        at com.nivixx.ndatabase.core.RepositoryManager.getOrCreateRepository(RepositoryManager.java:57) ~[?:?]
        at com.nivixx.ndatabase.core.NDatabaseAPIImpl.getOrCreateRepository(NDatabaseAPIImpl.java:20) ~[?:?]
        at com.github.pgutils.entities.service.LobbyService.saveLobby(LobbyService.java:19) ~[?:?]
        at com.github.pgutils.utils.UltimateUtilsX.createLobby(UltimateUtilsX.java:27) ~[?:?]
        at com.github.pgutils.commands.all.LobbyCommand.execute(LobbyCommand.java:86) ~[?:?]
        at com.github.pgutils.commands.PGUtilsCommand.onCommand(PGUtilsCommand.java:47) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[spigot-api-1.20.4-R0.1-SNAPSHOT.jar:?]
        ... 29 more
Caused by: java.lang.NoSuchMethodException: org.bukkit.Location.<init>()
        at java.lang.Class.getConstructor0(Class.java:3585) ~[?:?]
        at java.lang.Class.getDeclaredConstructor(Class.java:2754) ~[?:?]
        at com.nivixx.ndatabase.core.reflection.NReflectionUtil.resolveIndexedFieldsFromEntity(NReflectionUtil.java:50) ~[?:?]
        at com.nivixx.ndatabase.core.RepositoryManager.getOrCreateRepository(RepositoryManager.java:55) ~[?:?]
        at com.nivixx.ndatabase.core.NDatabaseAPIImpl.getOrCreateRepository(NDatabaseAPIImpl.java:20) ~[?:?]
        at com.github.pgutils.entities.service.LobbyService.saveLobby(LobbyService.java:19) ~[?:?]
        at com.github.pgutils.utils.UltimateUtilsX.createLobby(UltimateUtilsX.java:27) ~[?:?]
        at com.github.pgutils.commands.all.LobbyCommand.execute(LobbyCommand.java:86) ~[?:?]
        at com.github.pgutils.commands.PGUtilsCommand.onCommand(PGUtilsCommand.java:47) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[spigot-api-1.20.4-R0.1-SNAPSHOT.jar:?]
        ... 29 more

It seems like it's trying to get an instance of a non-existent constructor, but I can't figure out a way to fix it.

[NivixX]

Hello, thank you for sharing all the details.
I have been able to reproduce the problem and did a fix for that !

Note that if you need to index bukkit related domain object, the best approach is to create your own DTO (as you can use the Index annotation) and do a mapper to convert your DTO object to Bukkit.
This approach also avoid having dependency between your data layer and bukkit API

Fix:
https://github.com/NivixX/NDatabase/releases/tag/1.2.0

I added unit tests to validate it work but please try on your server and let me know if it work on a Bukkit env.