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Groups > comp.lang.java.programmer > #27547

Re: while loop is not working properly why

From Daniel Pitts <newsgroup.nospam@virtualinfinity.net>
Newsgroups comp.lang.java.programmer
Subject Re: while loop is not working properly why
References <7e697752-e40a-42a1-b96d-3f37fc37dbed@googlegroups.com>
Message-ID <dfNMu.319747$Z94.260283@fx26.iad> (permalink)
Date 2014-02-18 10:02 -0800

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On 2/18/14 8:25 AM, Navneet Mathpal wrote:
>
>
>
> cursor is not going inside the while why??
>
>
> public void fetch_data() throws Exception
> 	{
> 	 Mongo mongo = new Mongo("localhost", 27017);
> 	DB db = mongo.getDB("relevancy_data");
> 	DBCollection collection = db.getCollection("relevancy");	
> 	
> 	BasicDBObject andQuery = new BasicDBObject();
> 	List<BasicDBObject> obj = new ArrayList<BasicDBObject>();
> 	obj.add(new BasicDBObject("Platform","ElasticSearch"));
> 	obj.add(new BasicDBObject("Enviroment", "Developer"));
> 	obj.add(new BasicDBObject("Test_name", "Search_apple"));
> 	andQuery.put("$and", obj);
>
> 	System.out.println(obj.size());
> 	//System.out.println(andQuery.toString());
>
> 	DBCursor cursor = collection.find(andQuery);
>
> 	while (cursor.hasNext()) {
> 		System.out.println("inside of while");
> 		System.out.println(cursor.next());
> 	}
> 		System.out.println("outside of while");
> 	
> 	
> 	}
>

The while loop is working properly.  My guess is that cursor.hasNext() 
returns false.

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Thread

while loop is not working properly why Navneet Mathpal <navneetmathpal93@gmail.com> - 2014-02-18 08:25 -0800
  Re: while loop is not working properly why Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2014-02-18 10:02 -0800
  Re: while loop is not working properly why Roedy Green <see_website@mindprod.com.invalid> - 2014-02-18 15:13 -0800

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