Hello I have some Json data in form of a com.fasterxml.jackson.databind.node.ObjectNode and I want to store it in a MongoDB.
How can the ObjectNode efficiently be converted to a MongoDB DBObject and vice versa?
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Have you looked at [MongoJack](http://mongojack.org/)? It's a nice library to work with Jackson and MongoDB – Trisha Apr 29 '14 at 10:43
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Thank you, MongoJack looks like a very good recommendation :) – Biff Wellington May 03 '14 at 09:19
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For such a simple mapping, most tools from http://json.org (section java) would work. For one of them (Jackson, http://wiki.fasterxml.com/JacksonInFiveMinutes), you'd do:
HashMap<String,Object> result = new ObjectMapper().readValue(JSON_SOURCE, HashMap.class);
(where JSON_SOURCE is a File, input stream, reader, or json content String) see: Convert Json to Map
Specifically for inserting an ObjectNode into mongodb you could do the following if you're using Java:
BasicDBObject dbObject = new BasicDBObject();
HashMap<String, Object> keyValuePairs = new ObjectMapper().readValue(TheObjectNode.traverse(), HashMap.class);
dbObject.putAll(keyValuePairs);
