[JAVA]: How to insert and retrieve Dynamic JSON in MongoDB

Question

I am developing JAX-RS web service with MongoDB in backend. I am using Morphia for Class to Mongo Collection Mapping. In one of the insert operation we have a Json inside a JSON.

{
    "deviceId" : "57b5afc7e91c14ce01425fb6",
    "data":{
        "mah":50,
        "volt":23
    },
    "isSynced" : true
}

In this the JSON with key "data" is dynamic. which can be anything.

How should I insert a dynamic JSON inside collection? As it is dynamic I cannot map it to a class.

Answer 1

You could store that JSON as a Map inside your entity. The generics might get funky, though, since the value type would likely have to be Object .

Answer 2

This is resolved. I used com.mongodb.BasicDBObject for this. This has in-built constructor which serves the purpose.