Nitrite/Java: Error while updating with an embedded object

[hiroladev]

I have an object with an embedded object, which can be null.

public abstract class PersistentObject implements Mappable {
    public abstract String getUUID();
    public abstract NitriteId getNitriteId();
}

@Indices({
        @Index(value = "uuid", type = IndexType.Unique),
        @Index(value = "emailAddress", type = IndexType.Unique)
})
public class User extends PersistentObject {

    @Id
    private NitriteId nitriteId;
    private String uuid = UUIDFactory.generateUUID();
    private String emailAddress = UUIDFactory.generateEMailAddress();
    ....
    private RunningPlan activeRunningPlan; // current training, can be null

 @Override
    public Document write(NitriteMapper mapper) {
        Document document = new Document();
        document.put("uuid", uuid);
        document.put("firstName", firstName);
        document.put("lastName", lastName);
        document.put("emailAddress", emailAddress);
        document.put("birthday", birthday);
        document.put("gender", gender);
        document.put("trainingLevel", trainingLevel);
        document.put("maxPulse", maxPulse);

        if (activeRunningPlan != null) {
            Document activeRunningPlanDocument = activeRunningPlan.write(mapper);
            document.put("activeRunningPlan", activeRunningPlanDocument);
        }

        return document;
    }

    @Override
    public void read(NitriteMapper mapper, Document document) {
        if (document != null) {
            nitriteId = document.getId();
            uuid = (String) document.get("uuid");
            firstName = (String) document.get("firstName");
            lastName = (String) document.get("lastName");
            emailAddress = (String) document.get("emailAddress");
            birthday = (Date) document.get("birthday");
            gender = (int) document.get("gender");
            trainingLevel = (int) document.get("trainingLevel");
            maxPulse = (int) document.get("maxPulse");

            Document activeRunningPlanDocument = (Document) document.get("activeRunningPlan");
            if (activeRunningPlanDocument != null) {
                RunningPlan activeRunningPlan = new RunningPlan();
                activeRunningPlan.read(mapper, activeRunningPlanDocument);
                this.activeRunningPlan = activeRunningPlan;
            }
        }
    }
}

When the object is created, there are no errors. Only when updated: NO2.6003: id can not be null
While update, the User object has a nitrite id.

[anidotnet]

Can you please provide the code update and the version of nitrite you are using?

[hiroladev]

I use version 3.4.3.

Initializing the database:

 private DatabaseManager(@NotNull String packageName) {
        try {
            // Nitrite by default compacts the database file before close.
            // If compaction is enabled chunks will be moved next to each other.
            // Disabling compaction will increase the performance during database close.
                String databasePath = initializeDatabasePath(packageName);
                database = Nitrite.builder()
                        .filePath(databasePath)
                        .disableAutoCompact()
                        .openOrCreate();

Inserting, updating and removing

private void doActionWithObject(int action, PersistentObject object) throws SportsLibraryException {
        // the concrete type must be specified for each access to a repo
        try {
            if (object instanceof User) {
                ObjectRepository<User> objectRepository = database.getRepository(User.class);
                switch (action) {
                    case INSERT_ACTION: objectRepository.insert((User) object); return;
                    case UPDATE_ACTION: objectRepository.update((User) object); return;
                    case REMOVE_ACTION: objectRepository.remove((User) object); return;
                }

[hiroladev]

I am a bit confused. The id of the user object is not null. Which id is null here?

[hiroladev]

I have the attribute nitriteId deleted now. The id field is now the attribute uuid. Now it works.

[anidotnet]

Sorry for the late reply. Can I close this issue now if you have found the solution?

[hiroladev]

My "solution": I use the field uuid as id and "ignore" the nitrite id:

public class User extends PersistentObject {

    @Id
    private String uuid = UUIDFactory.generateUUID();

[anidotnet]

Sorry again for belated reply, got a little tied up with my day job, so could not pay attention to your issue. The problem here is with the write method in User class. You also have to write nitriteId field in the document like other fields. As you are handling the serialization and deserialization manually, you have to take care of each and every field of your object.

@Indices({
        @Index(value = "uuid", type = IndexType.Unique),
        @Index(value = "emailAddress", type = IndexType.Unique)
})
public class User extends PersistentObject {

    @Id
    private NitriteId nitriteId;
    private String uuid = UUIDFactory.generateUUID();
    private String emailAddress = UUIDFactory.generateEMailAddress();
    ....
    private RunningPlan activeRunningPlan; // current training, can be null

 @Override
    public Document write(NitriteMapper mapper) {
        Document document = new Document();
        document.put("nitriteId", nitriteId);
        document.put("uuid", uuid);
        document.put("firstName", firstName);
        document.put("lastName", lastName);
        document.put("emailAddress", emailAddress);
        document.put("birthday", birthday);

Do this and your issue will be resolved.

[anidotnet]

Does this solution solve your issue?

[hiroladev]

I use my own uuid again. This works for me. Thanks.