Simple just pass the existing id and based on id get the user object from DB Then while adding product object map this existing user to your request body
First of all if we are developing microservice approach we shouldn't go for association mapping this embedded documents only the way we can perform inner association and it will be more faster
I tried to create one springboot app with mongodb, it is giving me 404 error when I hit through postman, while saving the entity, can u plz comment on this?
404 issue is always indicate about wrong URL mapping please give proper URL to access your rest endpoint Possible solution : 1.check whether you followed proper package hierarchy or not 2.if you are not following package hierarchy then you must need to enable component scan
@Java Techie sir. I got an error which shows _id :0 and _class : my model class path. Since I entered my data through postman and got successfully placed message. When I came to compass it's says like this sir. Kindly need your help sir
does Id annotation is required here as we are not having relationship concept here & How does Mongo knows it has to create Address Document from User Document . Is it derived from User
Nice video. But I was looking for one to many Get query also. You have showcased getting users by address (one-to-one), but not getting users by product. Some cases that is important too. Your title says so. Also, having this structure where products go in user object, when say 100 users have bought 50 products and many more people will buy some of those 50 products. Won't it be a bulky database with repetitions?
I really appreciate you for sharing great videos? One of the best video I have seen is your Java collection interview question vide. Could you do video on mongodb interview questions for java/springboot developer?
Excuse me but I don't understand why we don't create here a Service but if we connect to Mysql database we do. If you could explain it to me it would help a lot! Thank you!!
Basant sir can you help me with the code of finding users by product name, I am working on a project with same logic and i am stuck on this for several days. since products part is array I am getting confused please help me.
Simply get list of users then from users get the products and iterate with filter product name if any matches found then create new array list and add user object and return it
Great tutorial ! ❤ But I have some questions. How to model this in many to many relationship in spring boot with mongo db? How to handle cascading operations in that case?
Hi Harsha , This is one difference between RDBMS and NoSQL . We can't handle association mapping in NoSQL because it's not ment for transactional data . We have workaround on it that we can maintain mapping as embedded documents
Nice tutorial, Thanks you for amazing content. One question, like in Spring Data JPA we use OneToOne annotations to have Product Object, Here how will "USer class"know internally that it should do oneToOne mapping here without annotations ? Please explain
The example of the CRUD of spring boot and mongodb I think is great, but I suffered to understand your pronunciation in english, for next time try to improve in order to enjoy your great tutorials. Just a good advice
Hi Qurban , I really apologies for this , as this is my initial video so prepare video with lot of nervousness So I would like to to suggest you to go through my latest video , hopefully you will love those content
@@Javatechie Basant, you're really humble in doing so and being apologetic(Which you dint need to be) ! Your video tutorial are really life changer for me . I can clear my interviews with so much confidence, because its very clear for understanding concepts. Thank you so much !!!
How to insert sub-document value that should be refer with main document Id?
bhai mza aa gya .. ultimate video
Appreciate for your hard work and Thank you very much for this video.
Sir, How we write query annotation if we want to add findByProduct from the list in the repository?
Please check this out th-cam.com/video/qVNOw9TWwxo/w-d-xo.html
How do i add only the product part of the json object into a different collection with a product key and map it to user object key
You didn't perform update and delete operation on embedded document. Like, if i want to add one more product to particular user, how will we do that?
Simple just pass the existing id and based on id get the user object from DB
Then while adding product object map this existing user to your request body
Java Techie how to map existing user to request body? Could you please show some demo with code
Public void updateUser(@RequestBody product product){
user=repository.findById(id);
user.setProduct(product);
Repository.save(user);
}
While doing like this it is replacing with existing product
thank you so much bro for getting this vidioo
Sir if want to add data in collection product and collection addresss then what we can do ?
Why all the people uses Embedded Documents? Not is more inefficient this strategy than use Referenced Documents?
First of all if we are developing microservice approach we shouldn't go for association mapping this embedded documents only the way we can perform inner association and it will be more faster
Good Example. Thanks.
Hi, can you please explain how we can use PUT Method to add 1 more array of object of Products in already created User.
In real life, what is more used, embeded or reference documents?
I tried to create one springboot app with mongodb, it is giving me 404 error when I hit through postman, while saving the entity, can u plz comment on this?
404 issue is always indicate about wrong URL mapping please give proper URL to access your rest endpoint
Possible solution :
1.check whether you followed proper package hierarchy or not
2.if you are not following package hierarchy then you must need to enable component scan
@@Javatechie is it necessary to add component scan in the controller?
@@Javatechie I tried to use the similar package structure, by proper package hierarchy what do you mean, what do I need to do?
@@simpleTechGuide can you share your code through GitHub so that I can check this out
@@Javatechie yeah will try to.share that
@Java Techie sir. I got an error which shows _id :0 and _class : my model class path. Since I entered my data through postman and got successfully placed message. When I came to compass it's says like this sir.
Kindly need your help sir
Please configure Lombok in your IDE
Sir even though if I add lambok dependency its still throwing like this only sir.. Please fix this bug for me sir.. I need your help
You need to install in your IDE
@@Javatechie can you please guide me sir?
Hey i am facing the same issue how did you resolve it
does Id annotation is required here as we are not having relationship concept here & How does Mongo knows it has to create Address Document from User Document . Is it derived from User
What to do if i want to retrieve documents using product name?
findByProductName()
@@Javatechie i tried that, I'm getting 500 error- readstartdocument can only be called when currentbson is document not string
Nice video. But I was looking for one to many Get query also. You have showcased getting users by address (one-to-one), but not getting users by product. Some cases that is important too. Your title says so. Also, having this structure where products go in user object, when say 100 users have bought 50 products and many more people will buy some of those 50 products. Won't it be a bulky database with repetitions?
Worth Watching.....
I really appreciate you for sharing great videos? One of the best video I have seen is your
Java collection interview question vide. Could you do video on mongodb interview questions for java/springboot developer?
Okay I will
How can i fetch the list of User's , who are having product as mobile..
Great Tutorial !! Really very helpful.. Can you please make a vedio on Spring Boot with mongodb and elastic search
Already did that please checkout my spring boot playlist
Any video on pagination in Spring. eg. when doing product search based on sorting on few fields lets say price of product
This scenario already covered in spring data jpa
@@Javatechie thanks.. I will check it out
Hi basant ...how to work with procedure,functions and trigger in mongo db
Procedure I never tried with mongo I will check and let you know
Thanks basant
Hello!!! Basant
should we have to use NoSql DB instead SQL DB in microservice?
It's good to use NoSQL over SQL in microservice architecture .
Please Go through my SQL vs NoSQL tutorial you will get clear idea on it ....
Thank you for your quick response
What happen if you restart the spring boot app? It's the same like H2? Thanks
No H2 is in memory DB but mongo can store data for long , until unless you delete it
@@Javatechie Thanks
can you please make video how to use @Ref and test from postman ? thanks
I need to check this , will do
@@Javatechie thanks for reply , i tried but could not succeeded. I'd be glad if you make video
Isnot it necessary to annotate @Document in Address and Product classes
Hello ,;
How to get the list of products, thank you
Simply you can call repository.findAll();
Do you have entity with name Product if Yes create ProductRepository extends from Jpa repository
Then use ProductRepository.findAll()
Excuse me but I don't understand why we don't create here a Service but if we connect to Mysql database we do. If you could explain it to me it would help a lot! Thank you!!
GREAT👍👏, How to maintain PK like our JPA generationType.AUTO?
No this is bit tricky , you need to create sequence manually I mean using java code
@@Javatechie thanks I checked on google I found that we can maintain through UUID.
So easy...now here's the task...create the separate collection and acces that collection using dbref...can you do this??
Yes we can
@@Javatechie how we can... I got stuck at one point... please help me 🙏🏻
Okay sure let me check
Hi Brother, Could you please make and video for PUT and delete where the objects inside arrays will be deleted.
Lalit bhai do you know how to get users by product name in this video?
How can we update embedded documents like products
@Java Techie Please answer this question
Answered on your comment just go through it
Why can't you use Intellij Idea community edition? This IDE is sucks.
Yes am using intellij dude , this is old video
Basant sir can you help me with the code of finding users by product name, I am working on a project with same logic and i am stuck on this for several days. since products part is array I am getting confused please help me.
Simply get list of users then from users get the products and iterate with filter product name if any matches found then create new array list and add user object and return it
Kindly explain the two collection and fetch the data from mongodb using spring boot
Okay I will
Great tutorial ! ❤ But I have some questions. How to model this in many to many relationship in spring boot with mongo db? How to handle cascading operations in that case?
Hi Harsha ,
This is one difference between RDBMS and NoSQL .
We can't handle association mapping in NoSQL because it's not ment for transactional data .
We have workaround on it that we can maintain mapping as embedded documents
Nice tutorial, Thanks you for amazing content. One question, like in Spring Data JPA we use OneToOne annotations to have Product Object, Here how will "USer class"know internally that it should do oneToOne mapping here without annotations ? Please explain
Without annotation it's not possible to make relationship between entity
@@Javatechie como lo aplicaría con referencias @DBRef
thank you so much sir
Make video for insert/fetch country, state, city using mongodb thankful your hardwork.
thank you for tuto
The example of the CRUD of spring boot and mongodb I think is great, but I suffered to understand your pronunciation in english, for next time try to improve in order to enjoy your great tutorials. Just a good advice
Hi Mathias,
Thanks for your interest , going forward will take care this 👍
Its not a crud operation. Its is only get and post.
ok
Pleaseeeeee improve your pronunciation pleaseeeeeeee
Hi Qurban , I really apologies for this , as this is my initial video so prepare video with lot of nervousness
So I would like to to suggest you to go through my latest video , hopefully you will love those content
@@Javatechie Hi, I am having null values inserted into the db, can you explain the reason why the values in User class are passing as null ?
@@BalajiRancho did you add getter and setter method in your entity
@@Javatechie Basant, you're really humble in doing so and being apologetic(Which you dint need to be) ! Your video tutorial are really life changer for me . I can clear my interviews with so much confidence, because its very clear for understanding concepts. Thank you so much !!!
Thank you so much Amaradhi , glad to hear this
How to auto increment the Id?
As far I know there is no direct feature to use Auto generate id
I will check and update okay
@@Javatechie thank you 🙏