Delete all documents in a collection with Springdata mongo Query

Question

I want to implement a delete method which deletes all the documents in a collection. I am using mongo db with Spring Data.This could be done using db.myCollection.remove({}) in Mongo shell. But I want to write a method in my data access layer to do this.I am not using MongodbTemplate in my Dao class. I want to know how can I do this with Query.

Query query = new Query();

Could anybody please tell me how can I do it.

Answer 1

You can use MongoTemplate directly

mongoTemplate.remove(new Query(), collectionName);

Answer 2

You can drop the collection and create it again:

mongoTemplate.dropCollection("collectionName");
mongoTemplate.createCollection("collectionName");