How to update particular field in mongo db by using MongoRepository Interface?

Question

How to update a particular field in mongo db collection by using MongoRepository Interface in spring?

Sherrod

apart from MongoRepository do you know with any other repository? – Sherrod

short answer is NO – Merat

did you get the solution? – Gum

Answer 1

You can update specific field by below code:

Query query1 = new Query(Criteria.where("id").is("123"));
Update update1 = new Update();
update1.set("available", false);
mongoTemplate.updateFirst(query1, update1, Customer.class);

Sori

This method uses MongoOperation, not MongoRepository – Merat

Not an answer, see the previous comment – Scholasticism

Answer 2

As of today, you can't update the document using MongoRepository using one query. If you really want to update a particular field using MongoRepository then following is the steps:

1. Fetch the document that you want to update
2. Set the new value to a particular field and save that document.

Example:

MyDocument myDocumentToUpdate = myDocumentRepository.findById(documentId); // fetching a document that you want to update the field
myDocumentToUpdate.setMyField(myNewValue); // setting the new value to the field myField
myDocumentRepository.save(myDocumentToUpdate); // saving (It basically updates the document) the updated document

Sitin

This seems to have the effect of overwriting the entire document rather than just updating the value of that single field. – Mohican

Yes. Internally it is not changing the particular field but as a user, it seems to do so. – Sitin