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Questions - spring-data-mongodb

Retrive a object of parent class into child class in spring boot application

I am building REST API using spring boot application. I have connected application to Mongodb database. I have created a database named "Employee" and collection as "Employee" itse...
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Vishal

spring

spring-boot

spring-data-mongodb

mongorepository

Votes: 0

Answers: 1

Latest Answer

Because you just create Repository of class A and call it, you nedd to creat two another repo of class B and C then call them like you call " EmployeeRepository " so you can use them and get...
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Nidhal Ben Brahim

Authentication failed connecting to MongoDB running in a local docker cointainer from Spring Boot application

I cannot connect to a mongodb instance running in a local docker container from my spring boot application. When the application tries to connect to the database the error below is thrown: 2022-04-03 ...
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eHayik

mongodb

spring-boot

docker

spring-data-mongodb

Votes: 0

Answers: 2

Latest Answer

Thanks to @Mark Bramnik answer I realized that I cannot authenticate to the mongodb container using root:Pa$$w0rd credentials. I created a file named init-mongo.js: db.createUser( { user: ...
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eHayik

Mongo query to split more than two arrays without duplicate result

I am trying to build a Mongo query for the below-mentioned record, [ { "_id": "1", "source": "Source1", "customer": "customer1"...
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Shashank

java

mongodb

spring-data-mongodb

Votes: 0

Answers: 1

Latest Answer

You can use $group to deal with duplicae. I think you can learn from my answer and correct your own one. db.collection.aggregate([ { $unwind: { path: "$models", preserveNullAndEmptyArrays:...
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YuTing

How to unwrap a mongodb nested document with unknown field names

I have some data coming from an IoT device and i am storing that in the mongodb using the following structure: { data:{ <timeStamp1>:<energyValue1>, <timeStamp2>:<energyValue2>...
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sravanth

mongodb

aggregation-framework

spring-data-mongodb

Votes: 0

Answers: 1

Latest Answer

Maybe something like this: db.collection.aggregate([ { "$addFields": { "data": { "$objectToArray": "$data" } } }, { $unwind: "$data"...
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R2D2

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