Mongodb New Question

• Mongoose populate method not populating all fields

  I change the order of an array and then populate doesn't work. It still works on the documents that I did not try to update.I have a seccion model with preguntas inside of itSECCION MODELconst ......

  mongodb  mongoose  mongoose-populate  Read Article

• Populating a field by aggregating other collection

  I have a user and a ratings collection. Ratings collection has ratedBy, ratedTo and score.Now I want to find all users on some criteria and also getting their ratingAvg. So the result would look ......

  mongodb  mongoose  aggregation  mongoose-populate  Read Article

• How to get document value except null fields of ar

  I have a Schema_id:"5ff9b57d2c196236206a0e96"eventId:"1"eventName:"Name"teams:[ 0: {player:"5245552555556"} 1: {player:"5245552559557"} 2: null......

  mongodb  express  mongoose  mongoose-populate  Read Article

• how to use find in populate (mongoose)

  I want to match a string with employee ID, employee Name , project nameMy Models : (employee)const employeeSchema = new mongoose.Schema( { employeeID: { type: String, unique: true, required: ......

  mongodb  mongoose  mongoose-populate  Read Article

• Populate a property of a mongoose schema with all

  I have a model with articles, and would like to populate an array of data with all the documents in a collection.const mongoose = require('mongoose');const Schema = mongoose.Schema;const ......

  mongodb  mongoose  mongoose-schema  mongoose-populate  Read Article

• What's the best way to manage large ObjectID a

  In this case:const PostSchema = new mongoose.Schema({ "content": { type: String, required: true }, "user": { type: mongoose.Schema.Types.......

  mongodb  mongoose  pagination  mongoose-schema  mongoose-populate  Read Article

• MongoDB Morphia Compatibility Matrix

  I have a project that whose mongo DB version is being migrated from 3.2 to 4.0.As mongo DB doesn't allow an ecosystem to jump directly from 3.2 to 4.0, so we migrated like this:3.2 -----> 3.4 -----> ......

  mongodb  mongoose  aggregation-framework  morphia  odm  Read Article

• Aggregation $addFields Mongo Morphia equivalent

  I want to use this below mongo query in morphia but cannot find $addFields morphia equivalent in morphia 1.3.2db.getCollection('user').aggregate([ { $addFields: { fullName: { $concat: ['$......

  mongodb  morphia  Read Article

• Mongodb intermittent spikes in fetch latencies

  I am facing the issue of intermittent spikes in response latencies while fetching data in a sharded cluster. Data is always being queried via indexed fields.Also seeing high CPU usage on secondary ......

  mongodb  memory  latency  morphia  Read Article

• How to use transaction in MongoDB 4.0 using QueryD

  I'm using QueryDSL 4.2.1, Morphia 1.3.2 and MongoDB Java Driver 3.5.After upgrading MongoDB server to version 4.0, I updated the mongo-java-driver to a version that supports transactions in MongoDB.......

  mongodb  groovy  spring-data  querydsl  morphia  Read Article

• How to fetch specific field from mongo collection

  Lets say class "A" as follows: Class A{ String fieldOne; String fieldTwo;}and collection "collactionA" as follows:{"_id" : ObjectId("......

  mongodb  morphia  Read Article

• How can I handle multiple server MongoDB with Morp

  I am using Morphia.And now I have two mongoDB server:'mongodb://user:[email protected]:3800,server2.com:3717/testDb?replicaSet=mgset-502725001'How can I connect both server by Morphia?I can ......

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• How to save java objects with circular references

  I was trying to store these two classes in my MongoDB database:Player [email protected](value = "players")public class SMPPlayer { @Id protected final String uuidString; protected ......

  mongodb  morphia  Read Article

• Morphia/Mongo not able to link @Reference, giving

  I have set up a simple datastore to store a Version and a Build. Here are their [email protected]("Version")public class Version { @Id private ObjectId id = new ObjectId(); ......

  mongodb  morphia  mongorestore  dbref  Read Article

• Java Spark Mongodb connector joda time save

  When I save person dataset in mongodb using spark connector, its creating empty object of createdTimestamp as shown below mage , I want to save createdTimestamp with DateTime Object of joda time.......

  mongodb  apache-spark  apache-spark-dataset  spark-java  Read Article