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Questions tagged [mongo-java]

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315 questions
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update BasicDbList element from java

I have a BasicDbObject like the following : { "_id" : ObjectId("57060562ea9bcdfgs50ffdc7"), "name" : "g3", "detaillist" : [ { "code" : "123", "School" : "LDC", "Friend" : "Archana" }, …
Gayatri
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Java MongoDB how to use BasicDBList as $in parameter

I have a MongoDB Collection like this, containing details of game players: { ... "fields" : { "playername" : "Koala", ... } ... } And I want to get the IDs of the players in an array. So, for example, I do…
Roi
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Minimum configuration for writing to Mongo replica set in Java client

I'm new to morphia. I'm using morphia and mongo-java-driver.jar to talk with a replica-set (I need it for a cluster) through a Java program. I wrote the sample program below: public static void createDBConnection() { try { …
Narendra
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How to use Mongo Bulk Update using its Java Driver?

I am using Mongo Bulk Update using its Java Driver 2.13. MongoClient mongo = new MongoClient("localhost", 27017); DB db = (DB) mongo.getDB("test"); DBCollection collection = db.getCollection("collection"); BulkWriteOperation builder…
Dev
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How can I authenticate any database with given username and password in Mongo Java Driver 2.13.0?

Previously I could use db.authenticate(String username, char[] password) method. With 2.13.0, how can I achieve this?
Dev
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group by date in mogodb query without considering time

I have the following code: DBObject groupFields = new BasicDBObject("_id", "$Date"); groupFields.put("count", new BasicDBObject("$sum", 1)); DBObject groupBy = new BasicDBObject("$group", groupFields); stages.add(groupBy); DBObject…
HMdeveloper
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java mongodb driver no exception thrown on duplicate keys

I'm using spring framework with mongoTemplate. bean initiation: public @Bean MongoTemplate mongoTemplate() throws Exception { MongoTemplate mongoTemplate = new MongoTemplate(mongoDbFactory()); …
royB
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Mongo Connection Pooling(Changing the size of connection pool)

How to change the mongo connection pool size? I have seen it is 100 by default. Is there a way to change this value? I dont want to do it via spring, is there a way to configure it via MongoClient? There is an option i see about mongoClientOptions…
neoeahit
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MongoDB : Hint with multiple columns in java query example

In a collection subject, in which the documents have social,maths and english as fields. If I need to provide a hint to the following find query, how do I do it? db.subject.find({maths : 30, social :10,english : 20});
user3631644
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1 answer

Mongo aggregation in java

Hi my mongo collections contains following documents: { "_id" : ObjectId("539efd5b254bb5f65c9da94e"), "iInfo" : [ { "ifout" : 0, "iferror" : 0, "ifdes" : "N/A", "ifin" : 0 }, { "ifout" : 0, "iferror" : 10, "ifdes"…
Neo-coder
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compare two collections in mongodb using java or an simple query

I am having following document (Json) of an gallery, { "_id": "53698b6092x3875407fefe7c", "status": "active", "colors": [ "red", "green" ], "paintings": [ { …
Parag Vaidya
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MongoDB Java client - why does `sort` seem to break my query?

I have not been able to make a query work when using sort. I expect the results of a query to be exactly the same as if I were not using sort, except the results should come in sorted, of course, but what happens is that when using sort I get…
Renato
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What is the effect of violating a unique index constraint in MongoDB's java driver?

I need to ensure an insert occurs and if it fails the system should throw an error. Do I need to check the insert occurred myself or will the Java driver throw an error if an insert is not possible?
Inverted Llama
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Sort array of subdocuments in mongodb with java

uI have an array of subdocument in the document of mongodb. I want to sort those subdocuments. I found it is possible to sort while updating the array. link: http://docs.mongodb.org/manual/reference/operator/update/sort/ I want to do this in…
Colleen Mayer
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Load Balancing Between Mongos

I have created a sharded environment, I am using two mongos. Is their a way I can load balance between the two "mongos",Because presently I found the Mongo client uses one of the two.Or do I have to write my own load balancer?
Phalguni Mukherjee
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