Could not resolve path 'guild.id' against 'Member'

[ghost]

Hello. I want to have a reference to another entity in my entity. I've come up with this from documentation examples:

---

This is my entity class, where I want to have a reference to another entity:

@Entity("members")
@SuppressWarnings("unused")
public class Member {
    @Id
    private final long id;

    @Nullable
    private final String description;

    @NotNull
    @Reference(idOnly = true)
    public final Guild guild;

    public Member(long id, @Nullable String description, @NotNull Guild memberGuild) {
        this.id = id;
        this.description = description;
        this.guild = memberGuild;
    }

    @NotNull
    public static Member fromMember(@NotNull net.dv8tion.jda.api.entities.Member member, 
        @Nullable String description, @NotNull net.dv8tion.jda.api.entities.Guild jdaGuild) 
        throws InvalidObjectException {
        Guild guild = DatabaseUtils.findOne(Guild.class, Pair.of("id", jdaGuild.getIdLong()));
        if (guild == null) throw new InvalidObjectException("Cannot find Guild object with id "
            + jdaGuild.getIdLong());
        return new Member(member.getIdLong(), description, guild);
    }

    @NotNull
    public static Member fromMember(@NotNull net.dv8tion.jda.api.entities.Member member, 
        @NotNull net.dv8tion.jda.api.entities.Guild guild) throws InvalidObjectException {
        return fromMember(member, null, guild);
    }

    @IdGetter
    public long getId() {
        return this.id;
    }

    @Nullable
    public String getDescription() {
        return this.description;
    }

    @NotNull
    public Guild getGuild() {
        return this.guild;
    }

    @Override
    public boolean equals(@NotNull Object obj) {
        if (obj == this) return true;
        if (obj.getClass() != this.getClass()) return false;

        Member member = (Member) obj;
        return Objects.equals(this.id, member.id)
                && Objects.equals(this.description, member.description)
                && Objects.equals(this.guild, member.guild);
    }

    @Override
    public String toString() {
        return "Member={"
                + "id=" + this.id
                + ",guild=" + this.guild
                + ",description=" + this.description
                + "}";
    }
}

And this is my Guild class:

@Entity("guilds")
@SuppressWarnings("unused")
public class Guild {
    @Id
    private final long id;

    @NotNull
    private final String language;

    public Guild(long id, @NotNull String language) {
        this.id = id;
        this.language = language;
    }

    @NotNull
    public static Guild fromGuild(net.dv8tion.jda.api.entities.Guild guild) {
        return new Guild(guild.getIdLong(), guild.getLocale().getLocale());
    }

    @IdGetter
    public long getId() {
        return this.id;
    }

    @NotNull
    public String getLanguage() {
        return this.language;
    }

    @Override
    public boolean equals(@NotNull Object obj) {
        if (obj == this) return true;
        if (obj.getClass() != this.getClass()) return false;

        Guild guild = (Guild) obj;
        return Objects.equals(this.id, guild.id)
                && Objects.equals(this.language, guild.language);
    }

    @Override
    public String toString() {
        return "Guild={"
                + "id=" + this.id
                + ",language=" + this.language
                + "}";
    }
}

And this is how I call this class:

if (Main.getDatastore().find(Member.class, Filters.eq("guild.id", guild.getIdLong()).count() == 0) {
        Main.getDatastore().save(Member.fromMember(member, guild));
}

Full error message:

dev.morphia.query.ValidationException: Could not resolve path 'guild.id' against 'ru.beebot.bot.models.Member'.  Unknown path element: 'guild'.
        at dev.morphia.internal.PathTarget.failValidation(PathTarget.java:137)
        at dev.morphia.internal.PathTarget.resolve(PathTarget.java:158)
        at dev.morphia.internal.PathTarget.translatedPath(PathTarget.java:106)
        at dev.morphia.query.experimental.filters.Filter.path(Filter.java:156)
        at dev.morphia.query.experimental.filters.Filters$1.encode(Filters.java:214)
        at dev.morphia.query.MorphiaQuery.lambda$getQueryDocument$2(MorphiaQuery.java:337)
        at dev.morphia.aggregation.experimental.codecs.ExpressionHelper.document(ExpressionHelper.java:36)
        at dev.morphia.query.MorphiaQuery.getQueryDocument(MorphiaQuery.java:334)
        at dev.morphia.query.MorphiaQuery.count(MorphiaQuery.java:95)
        at dev.morphia.query.MorphiaQuery.count(MorphiaQuery.java:89)
        at ru.beebot.bot.utils.database.DatabaseUtils.count(DatabaseUtils.java:64)
        at ru.beebot.bot.utils.database.DatabaseUtils.createIfNotExists(DatabaseUtils.java:69)
        at ru.beebot.bot.listeners.ReadyListener.lambda$onReady$0(ReadyListener.java:40)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
        at java.base/java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1092)
        at ru.beebot.bot.listeners.ReadyListener.lambda$onReady$1(ReadyListener.java:35)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
        at java.base/java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1092)
        at ru.beebot.bot.listeners.ReadyListener.onReady(ReadyListener.java:28)
        at net.dv8tion.jda.api.hooks.ListenerAdapter.onEvent(ListenerAdapter.java:382)
        at net.dv8tion.jda.api.hooks.InterfacedEventManager.handle(InterfacedEventManager.java:96)
        at net.dv8tion.jda.internal.hooks.EventManagerProxy.handleInternally(EventManagerProxy.java:88)
        at net.dv8tion.jda.internal.hooks.EventManagerProxy.handle(EventManagerProxy.java:70)
        at net.dv8tion.jda.internal.JDAImpl.handleEvent(JDAImpl.java:170)
        at net.dv8tion.jda.internal.requests.WebSocketClient.ready(WebSocketClient.java:201)
        at net.dv8tion.jda.internal.handle.GuildSetupController.checkReady(GuildSetupController.java:115)
        at net.dv8tion.jda.internal.handle.GuildSetupController.ready(GuildSetupController.java:102)
        at net.dv8tion.jda.internal.handle.GuildSetupNode.completeSetup(GuildSetupNode.java:375)
        at net.dv8tion.jda.internal.handle.GuildSetupNode.handleMemberChunk(GuildSetupNode.java:258)
        at net.dv8tion.jda.internal.handle.GuildSetupNode.ensureMembers(GuildSetupNode.java:400)
        at net.dv8tion.jda.internal.handle.GuildSetupNode.handleCreate(GuildSetupNode.java:218)
        at net.dv8tion.jda.internal.handle.GuildSetupController.onCreate(GuildSetupController.java:170)
        at net.dv8tion.jda.internal.handle.GuildCreateHandler.handleInternally(GuildCreateHandler.java:44)
        at net.dv8tion.jda.internal.handle.SocketHandler.handle(SocketHandler.java:39)
        at net.dv8tion.jda.internal.requests.WebSocketClient.onDispatch(WebSocketClient.java:953)
        at net.dv8tion.jda.internal.requests.WebSocketClient.onEvent(WebSocketClient.java:840)
        at net.dv8tion.jda.internal.requests.WebSocketClient.handleEvent(WebSocketClient.java:818)
        at net.dv8tion.jda.internal.requests.WebSocketClient.onBinaryMessage(WebSocketClient.java:992)
        at com.neovisionaries.ws.client.ListenerManager.callOnBinaryMessage(ListenerManager.java:385)
        at com.neovisionaries.ws.client.ReadingThread.callOnBinaryMessage(ReadingThread.java:276)
        at com.neovisionaries.ws.client.ReadingThread.handleBinaryFrame(ReadingThread.java:996)
        at com.neovisionaries.ws.client.ReadingThread.handleFrame(ReadingThread.java:755)
        at com.neovisionaries.ws.client.ReadingThread.main(ReadingThread.java:108)
        at com.neovisionaries.ws.client.ReadingThread.runMain(ReadingThread.java:64)
        at com.neovisionaries.ws.client.WebSocketThread.run(WebSocketThread.java:45)

Server Version: 5.0.10
Driver Version:
Morphia Version: 2.2.7

[evanchooly]

You would only need Filters.eq("guild", guild.getIdLong()) because the ID of that reference would be stored using the java field name.

[ghost]

It worked. Thank you!