MongoDB: Pull using Java Driver

Question

Here I am learning MongoDB. And I am stuck at performing a very basic operation using the MongoDB Java driver. I am trying to remove an element from an array present in the document. The document looks like this: ``` db.test.find().pretty() { "_id" : ObjectId("581245dd51030d389f5cf701"), "name" : "Rahul", "scores" : [ { "SDM" : 97 }, { "SE" : 96 }, { "DM" : 80 } ] } ``` I am trying to remove the second element in the array i.e. `{"SE" : 96}`. I understand that I can achieve this using `coll.update(match, new BasicDBObject("$pull", update));`. However I would like to leverage the `com.mongodb.client.model.Updates.pull(final String fieldName, final TItem value)`method. This is what I tried before posting the question: 1) I expected nothing to happen when I tried this and indeed there was no modification to the document. ``` ` Bson filter = Filters.eq("name", "Rahul"); Bson delete = Updates.pull("SE", 96); collection.updateOne(filter, delete);` ``` 2) The following is throwing an excepti…

Accepted Answer

Try this:

`Bson delete = Updates.pull("scores", new Document("SE", 96));`

MongoDB: Pull using Java Driver

Solution

Problem