mongodb query without field name

Question

I would like query all objects that have a field containing a specific value. For example, I have two documents:

{\"123\": \"apple\", \"217\": \"pear\", \"17         


        

Answer 1

You can use Full-text Index on all fields.

use dbname
db.collectionname.ensureIndex(
                           { "$**": "text" },
                           { name: "TextIndex" }
                         )

Then Search Using :

DB db = mongoClient.getDB("dbname");
DBCollection coll = db.getCollection("collectionname");
BasicDBObject query = new BasicDBObject();
            query.append("$text", new BasicDBObject("$search", searchstring));
            DBCursor cursor = coll.find(query);