Java Operations MongoDB (advanced query)

Go directly to code (dependency code check previous blogs):

public void query () {//$or (data with Query ID equal to 1 or ID equal to 2) basicdbobject queryobject = new Basicdbobject (). Append (Queryoper
		Ators.or, new basicdbobject[] {new basicdbobject ("id", 1), New Basicdbobject ("id", 2)});

		Find (Queryobject, "(data with Query ID equal to 1 or ID equal to 2)"); $and (data with Query ID equal to 10 and name equal to 10) Queryobject = new Basicdbobject (). Append (Queryoperators.and, new basicdbobject[] {NE
		W basicdbobject ("id"), new Basicdbobject ("name", "10")});

		Find (Queryobject (data with Query ID equal to 10 and name equals 10)); $GT (data with query ID greater than 10) Queryobject = new Basicdbobject (). Append ("id", new Basicdbobject (). Append (queryoperators.gt, 10)
		);
		Find (Queryobject, "(data with query ID greater than 10)"); $gte (data with query ID greater than or equal to 10) Queryobject = new Basicdbobject (). Append ("id", new Basicdbobject (). Append (Queryoperators.gte
		, 11));
		Find (Queryobject, "(data with query ID greater than 11)");
		$lt queryobject = new Basicdbobject (). Append ("id", new Basicdbobject (). Append (queryoperators.lt, 2));
		Find (Queryobject, "(data with query ID less than 2)"); //$lte Queryobject = new Basicdbobject (). Append ("id", new Basicdbobject (). Append (Queryoperators.lte, 2));

		Find (Queryobject, "(data with query ID less than 2)");
		$in queryobject = new Basicdbobject (). Append ("id", New Basicdbobject (queryoperators.in, new int[] {1, 2}));
		Find (Queryobject, "(Query ID 1 and 2 data)"); $nin queryobject = new Basicdbobject (). Append ("id", New Basicdbobject (Queryoperators.nin, new int[] {1, 2, 3, 4
		, 5, 6, 7, 8, 9});

		Find (Queryobject, "(data with Query ID not 1,2,3,4,5,6,7,8,9)"); There are many other advanced queries you can see Queryoperators class} public void find (basicdbobject condition, String str) {System.out.println ("= =
		============= "+ str +" ================== ");
		DB db = Mongomanager.getdb (constants.db);
		Dbcollection collection = Db.getcollection (Constants.collection_user);
		Dbcursor find = collection.find (condition);
			while (Find.hasnext ()) {User user = new user ();
			User.parse (Find.next ());
		SYSTEM.OUT.PRINTLN (user); }} public static void Main (string[] ArGS) {Userdao Userdao = new Userdao ();
	Userdao.query (); }

Queryoperators class source code:

Queryoperators.java/** * Copyright (C) 10gen Inc.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * You could not use this file, except in compliance with the License. * Obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * unless required 
 By applicable or agreed into writing, software * Distributed under the License is distributed on ' as is ' basis,
 * Without warranties or CONDITIONS of any KIND, either express or implied.
 * The License for the specific language governing permissions and * limitations under the License.

* * Package com.mongodb;  /** * MongoDB keywords for various query operations * * @author Julson Lim */public class Queryoperators {public
    Static final String OR = "$or";

    public static final String and = "$and";
    public static final String GT = "$GT";
    public static final String GTE = "$gte";
 public static final String LT = "$lt";   public static final String LTE = "$lte";
    public static final String NE = "$ne";
    public static final String in = "$in";
    public static final String NIN = "$nin";
    public static final String MOD = "$mod";
    public static final String all = "$all";
    public static final String SIZE = "$size";
    public static final String EXISTS = "$exists";

    public static final String Elem_match = "$elemMatch";
    (To is implemented in QueryBuilder) public static final String WHERE = "$where";
    public static final String NOR = "$nor";
    public static final String TYPE = "$type";

    The public static final String is not = "$not";
    Geo operators public static final String WITHIN = "$within";
    public static final String NEAR = "$near";
    public static final String near_sphere = "$nearSphere";
    public static final String box = "$box";
    public static final String CENTER = "$center";
    public static final String POLYGON = "$polygon"; public static Final String center_sphere = "$centerSphere";
    (To is implemented in QueryBuilder) public static final String max_distance = "$maxDistance";


    public static final String Unique_docs = "$uniqueDocs";
    Meta query operators (to is implemented in QueryBuilder) public static final String Return_key = "$returnKey";
    public static final String Max_scan = "$maxScan";
    public static final String order_by = "$orderby";
    public static final String EXPLAIN = "$explain";
    public static final String SNAPSHOT = "$snapshot";
    public static final String MIN = "$min";
    public static final String MAX = "$max";
    public static final String Show_disk_loc = "$showDiskLoc";
    public static final String HINT = "$hint";
public static final String COMMENT = "$comment";
 }

Output results:

================ (data with Query ID equal to 1 or ID equal to 2) ==================
id:1,name:jinhui,address:beijing
id:2,name: Manman,address:beijing
================ (data with Query ID equal to 10 and name equal to 10) ==================
================ (data with Query ID greater than 10) ==================
id:11,name:11,address:11
id:12,name:12,address:12
================ (data with a query ID greater than or equal to 11) ==================
id:11,name:11,address:11
id:12,name:12,address:12
============== = = (data with query ID less than 2) ==================
id:1,name:jinhui,address:beijing
================ (data with query ID less than equal to 2) = = = ==============
id:1,name:jinhui,address:beijing
id:2,name:manman,address:beijing
============== = = (data for query ID 1 and 2) ==================
id:1,name:jinhui,address:beijing
id:2,name:manman,address:beijing
================ (data with Query ID not 1,2,3,4,5,6,7,8,9) ==================
id:11,name:11,address:11
id:12, Name:12,address:12

The database data looks like this: