Get field data type from MongoDB using Java

Question

I have some fields in mongodb such as name as string, id as integer, address as arraylist and so on. I need name as "what data type". I need to get the name datatype.

This is my coding config the netbeans and MongoDB

MongoClient mongoClient = new MongoClient(mongopath);
DB db = mongoClient.getDB(dbname);
DBCollection coll = db.getCollection(dbname);
DBCursor cursor = coll.find();

Can someone explain this?

Wizard · Accepted Answer · 2014-09-04 12:55:31Z

1

You can try below:

BasicDBObject doc = cursor.hasNext() ? cursor.next() : new BasicDBObject();
Object name = doc.get("name");
String typeString = name == null ? "null" : name.getClass().toString();

answered Sep 4, 2014 at 12:55

Wizard

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4 Comments

BasK Over a year ago

Thank u Wizard.. It working fine.. i got below output class java.lang.String.. I need String data type only. Can u explain this?

Wizard Over a year ago

@Bass: String typeString = name == null ? "null" : name.getClass().getSimpleName();

BasK Over a year ago

Thank u Wizard and i have Other one doubt please check this url stackoverflow.com/questions/25665118/…

Wizard Over a year ago

@Bass, I'm not familiar with that. :)

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