CODEWITHSUNDEEP
mongodbspring-dataspring-data-mongodb
iLikeBreakfast
iLikeBreakfast

Reputation: 1555

How to save semi-structured data in MongoDB

I'm trying to figure out how to persist a semi-structured document to MongoDB, using Spring Mongo. Here's an example of what I'm trying to accomplish: 

{
  "name": "Test",
  "admin": false,
  "unstructured_field_one": "Some arbitrary data"
}

I know how to do this with fully unstructured data as a field in a parent document, where I can just use something like 

//...
private Object someRandomObject;

But how can I accomplish a semi-structured document (at parent level), where I have, as in the example, name and admin as required fields, and whatever else comes in along with the request gets added automagically?

Upvotes: 2

Views: 568

Answers (1)

pvpkiran
pvpkiran

Reputation: 27048

You can do it without any pojo, just with a Json Parser(Jackson) and MongoTemplate. Since MongoTemplate can save any DbObject, You need to convert your json to a DBObject.
Something like this will do 

 ObjectMapper mapper = new ObjectMapper();
 TypeReference<Map<String,Object>> typeRef
        = new TypeReference<Map<String,Object>>() {};
 Map<String,Object> map = mapper.readValue(json, typeRef);
 DBObject dbObject = new BasicDBObject(map);

 mongoTemplate.getCollection("blahblah").save(dbObject);

Upvotes: 2

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