mongoDB知识汇总

= new MongoClient ("hostname", 27017);

DB db = mongo.getDB("dataqueuenode");

DBCollection collection = db.getCollection("entity");

• MongoDB CRUD in java

BasicDBObject query = new BasicDBObject();

    query.put("type" , "S2F");

    query.put("subtype" , "SQL Orders");

    query.put("state" , "disputed");

    collection.findone(DBObject o);   // search one specific record

    collection.find(DBObject o);         //search all specific records

     collection.remove(DBObject o);    // remove specific records

       collection.insert(DBObject arr);       // insert record

       collection.update(DBObject q , DBObject o );       //update record

       * @param q      the selection criteria for the update

       * @param o      the modifications to apply

• MongoDB command

Reference
doc: http://docs.mongodb.org/manual/core/crud-introduction

• One Shell for MongoDB

        MongoVUE

MongoDB中条件操作符有：

• (>) 大于 - $gt
• (<) 小于 - $lt
• (>=) 大于等于 - $gte
• (<= ) 小于等于 - $lte

mongoDB知识汇总

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