MongoDB update using Java 3 driver

Question

I'm switching to the MongoDB Java driver version 3. I cannot figure out how to perform an update of a Document. For example, I want to change the "age" of an user:

MongoDatabase db = mongoClient.getDatabase("exampledb");
MongoCollection<org.bson.Document> coll = db.getCollection("collusers");

Document doc1 = new Document("name", "frank").append("age", 55) .append("phone", "123-456-789");
Document doc2 = new Document("name", "frank").append("age", 33) .append("phone", "123-456-789");
coll.updateOne(doc1, doc2);

The output is:

java.lang.IllegalArgumentException: Invalid BSON field name name

Any idea how to fix it ? Thanks!

Francesco Marchioni · Accepted Answer · 2015-06-07 13:36:00Z

41

Use:

coll.updateOne(eq("name", "frank"), new Document("$set", new Document("age", 33)));

for updating the first Document found. For multiple updates:

coll.updateMany(eq("name", "frank"), new Document("$set", new Document("age", 33)));

On this link, you can fine a quick reference to MongoDB Java 3 Driver

edited Jun 7, 2015 at 13:36

answered Apr 4, 2015 at 13:16

Francesco Marchioni

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4 Comments

AlikElzin-kilaka Over a year ago

What what what??? $set is Jiffa!!! Who thought of this implicit/hidden directive? What does it actually mean in comparison to other i don't know implicit/hidden directives?

Paul Over a year ago

@AlikElzin-kilaka, I don't know what "Jiffa" means but I certain we're very much in agreement about the crazy way in which the set command is passed to the server. The driver should have wrapped $set, $inc etc.

Joel Peltonen Over a year ago

@Paul Japan International Freight Forwarders Association, Inc, apparently.

phil294 Over a year ago

how can this be achieved with helper functions? eq(...), set(new Document("age",33)) does not seem to work for some reason

Zhongqiang Pu · Accepted Answer · 2015-05-29 02:57:23Z

11

in Mongodb Java driver 3.0 , when you update a document, you can call the coll.replaceOne method to replace document, or call the coll.updateOne / coll.updateMany method to update document(s) by using $set/$setOnInsert/etc operators.

in your case, you can try:

coll.updateOne(eq("name", "frank"), new Document("$set", new Document("age", 33)));
coll.replaceOne(eq("name", "frank"), new Document("age", 33));

edited May 29, 2015 at 2:57

answered May 26, 2015 at 3:58

Zhongqiang Pu

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Comments

Ivan Osipov · Accepted Answer · 2015-04-03 20:52:31Z

1

You can try this

coll.findOneAndReplace(doc1, doc2);

answered Apr 3, 2015 at 20:52

Ivan Osipov

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