How can I implement Firestore timestamp in Spring Boot Application

Question

I am creating a Spring Boot application and I have a timestamp variable in Firestore DB I want to send date in that field. How can I do that?

This is my service I am sending data to Firebase

    public Patient addPatient(Patient patients) throws InterruptedException, ExecutionException  {
    
    Firestore dbFirestore = FirestoreClient.getFirestore();
    ApiFuture<WriteResult> collectionApiResult = dbFirestore.collection(this.fireStoreCollection).document(patients.getUserId()).set(patients);
    return patients;
}

Answer 1

As mentioned by @Zeenath SN above, this post has your answer.

You can use ServerTimestamp annotation. Try changing

private Timestamp dob;

to

private Date dob;

in your code.

Alternatively, as below:

If you want to write a timestamp field, and you can't use a server timestamp, you will need to either provide a regular Java Date object, or a Firebase Timestamp object. Either of these types of values will convert to a timestamp field in the document.

When you query for the document, the field will always show up in the document snapshot as a Timestamp type object.