MongoDB JAVA API高级查询示例(对应于上一篇)

]/**
* MongoDBTest
* MongoDB JAVA API的高级查询示例
*/
package com.labci.mongodb.test;
import java.net.UnknownHostException;
import java.util.Iterator;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.Mongo;
import com.mongodb.MongoException;
/**
* @author Bill Tu(tujiyue/iwtxokhtd)
* May 21, 2011[11:33:34 PM]
*
*/
public class MongoDBAdvancedQuery {
private static final String HOST = "192.168.1.86";
private static final int PORT = 27017;
private static final String USER = "iwtxokhtd";
private static final String PASSWORD = "123456";
private static final String DB_NAME = "test";
private static final String COLLECTION = "data_test";
private static Mongo conn=null;
private static DB myDB=null;
private static DBCollection myCollection=null;

static{
try {
conn=new Mongo(HOST,PORT);//建立数据库连接
myDB=conn.getDB(DB_NAME);//使用test数据库
boolean loginSuccess=myDB.authenticate(USER, PASSWORD.toCharArray());//用户验证
if(loginSuccess){
myCollection=myDB.getCollection(COLLECTION);
}
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (MongoException e) {
e.printStackTrace();
}
}

/**
* 查询数据
* @param collection　“表”名
*/
private static void queryData(DBCollection collection){
//count查询
System.out.println("表的总记录数为：");
System.out.println(collection.find().count());
//分页查询
DBCursor findAll=collection.find();
DBCursor queryByPage=findAll.skip(3).limit(4);
printData("从第3条记录起取４条记录为：",queryByPage);
//order by操作
DBObject orderBy = new BasicDBObject();
orderBy.put("userName", -1);//按userName倒序排
DBCursor orderByResult=collection.find().sort(orderBy);
printData("所有记录按userName倒序排为：",orderByResult);

// "!=" 和 ">" 操作
DBObject notEqual=new BasicDBObject();
notEqual.put("$ne", "Bill Tu10");

DBObject greatThan=new BasicDBObject();
greatThan.put("$gt", 7);

DBObject notEqualAndGreatThan=new BasicDBObject();
notEqualAndGreatThan.put("userName", notEqual);
notEqualAndGreatThan.put("age", greatThan);

DBCursor notEqualAndGreatThanResult=collection.find(notEqualAndGreatThan);
printData("userName!='Bill Tu10' and age>7的记录为：",notEqualAndGreatThanResult);

// ">=" 和"<="操作
DBObject greatThanEqualAndLessThanEqual=new BasicDBObject();
greatThanEqualAndLessThanEqual.put("$gte", 2);
greatThanEqualAndLessThanEqual.put("$lte", 7);

DBObject ageCompare=new BasicDBObject();
ageCompare.put("age",greatThanEqualAndLessThanEqual);

DBCursor compareResult=collection.find(ageCompare);
printData("age>=2 and age<=7的记录为：",compareResult);

// all操作
DBObject all=new BasicDBObject();
all.put("$all", new Object[]{7,7});

DBObject rankAll=new BasicDBObject();
rankAll.put("rank", all);

DBCursor rankAllResult=collection.find(rankAll);
printData("rank in all(7,7)的记录为：",rankAllResult);

//not in操作
DBObject notIn=new BasicDBObject();
notIn.put("$nin", new Object[]{2,3});

DBObject ageNotIn=new BasicDBObject();
ageNotIn.put("age", notIn);

DBCursor ageNotInResult=collection.find(ageNotIn);
printData("age not in (2,3)的记录为：",ageNotInResult);

//or操作
DBObject orGreatThan=new BasicDBObject("$gt",3);
DBObject orRankAll=new BasicDBObject("$all",new Object[]{1,1});
DBObject ageOrGreatThan=new BasicDBObject();
ageOrGreatThan.put("age", orGreatThan);
DBObject rankOrAll=new BasicDBObject();
rankOrAll.put("rank", orRankAll);

DBObject orOperation=new BasicDBObject();
orOperation.put("$or", new Object[]{ageOrGreatThan,rankOrAll});

DBCursor orResult=collection.find(orOperation);
printData("age>3 or rank in all(1,1)的记录为：",orResult);

//not or操作
DBObject notOrOperation=new BasicDBObject();
notOrOperation.put("$nor", new Object[]{ageOrGreatThan,rankOrAll});

DBCursor notOrResult=collection.find(notOrOperation);
printData("not(age>3 or rank in all(1,1))的记录为：",notOrResult);

//size 操作
DBObject size=new BasicDBObject("$size",3);
DBObject rankSize=new BasicDBObject();
rankSize.put("rank", size);

DBCursor sizeResult=collection.find(rankSize);
printData("rank数组大小为３的记录为：",sizeResult);

//exists操作
DBObject exists=new BasicDBObject("$exists",false);
DBObject userNameExists=new BasicDBObject();
userNameExists.put("userName", exists);

DBCursor userNameExistsResult=collection.find(userNameExists);
printData("userName exists false的记录为：",userNameExistsResult);

//mod 取模操作
DBObject modArray=new BasicDBObject("$mod",new Object[]{2,0});
DBObject ageMod=new BasicDBObject();
ageMod.put("age", modArray);

DBCursor ageModResult=collection.find(ageMod);
printData("age%2==0的记录为：",ageModResult);

}

/**
* 打印结果数据
* @param description　结果数据相关描述
* @param recordResult　结果集
*/
private static void printData(String description,DBCursor recordResult){
System.out.println(description);
for(Iterator<DBObject> iter=recordResult.iterator();iter.hasNext();){
System.out.println(iter.next());
}
}

/**
* @param args
*/
public static void main(String[] args) {
queryData(myCollection);
}
}

表的总记录数为：
10
从第3条记录起取４条记录为：
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f6"} , "userId" : "10010174" , "userName" : "Bill Tu4" , "gender" : "m4" , "age" : 4 , "rank" : [ 4 , 4 , 4] , "interests" : { "game" : "game4" , "ball" : "ball4" , "other" : "nothing4"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f7"} , "userId" : "10010175" , "userName" : "Bill Tu5" , "gender" : "m5" , "age" : 5 , "rank" : [ 5 , 5 , 5] , "interests" : { "game" : "game5" , "ball" : "ball5" , "other" : "nothing5"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f8"} , "userId" : "10010176" , "userName" : "Bill Tu6" , "gender" : "m6" , "age" : 6 , "rank" : [ 6 , 6 , 6] , "interests" : { "game" : "game6" , "ball" : "ball6" , "other" : "nothing6"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f9"} , "userId" : "10010177" , "userName" : "Bill Tu7" , "gender" : "m7" , "age" : 7 , "rank" : [ 7 , 7 , 7] , "interests" : { "game" : "game7" , "ball" : "ball7" , "other" : "nothing7"}}
所有记录按userName倒序排为：
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fb"} , "userId" : "10010179" , "userName" : "Bill Tu9" , "gender" : "m9" , "age" : 9 , "rank" : [ 9 , 9 , 9] , "interests" : { "game" : "game9" , "ball" : "ball9" , "other" : "nothing9"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fa"} , "userId" : "10010178" , "userName" : "Bill Tu8" , "gender" : "m8" , "age" : 8 , "rank" : [ 8 , 8 , 8] , "interests" : { "game" : "game8" , "ball" : "ball8" , "other" : "nothing8"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f9"} , "userId" : "10010177" , "userName" : "Bill Tu7" , "gender" : "m7" , "age" : 7 , "rank" : [ 7 , 7 , 7] , "interests" : { "game" : "game7" , "ball" : "ball7" , "other" : "nothing7"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f8"} , "userId" : "10010176" , "userName" : "Bill Tu6" , "gender" : "m6" , "age" : 6 , "rank" : [ 6 , 6 , 6] , "interests" : { "game" : "game6" , "ball" : "ball6" , "other" : "nothing6"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f7"} , "userId" : "10010175" , "userName" : "Bill Tu5" , "gender" : "m5" , "age" : 5 , "rank" : [ 5 , 5 , 5] , "interests" : { "game" : "game5" , "ball" : "ball5" , "other" : "nothing5"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f6"} , "userId" : "10010174" , "userName" : "Bill Tu4" , "gender" : "m4" , "age" : 4 , "rank" : [ 4 , 4 , 4] , "interests" : { "game" : "game4" , "ball" : "ball4" , "other" : "nothing4"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f5"} , "userId" : "10010173" , "userName" : "Bill Tu3" , "gender" : "m3" , "age" : 3 , "rank" : [ 3 , 3 , 3] , "interests" : { "game" : "game3" , "ball" : "ball3" , "other" : "nothing3"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f4"} , "userId" : "10010172" , "userName" : "Bill Tu2" , "gender" : "m2" , "age" : 2 , "rank" : [ 2 , 2 , 2] , "interests" : { "game" : "game2" , "ball" : "ball2" , "other" : "nothing2"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fc"} , "userId" : "100101710" , "userName" : "Bill Tu10" , "gender" : "m10" , "age" : 10 , "rank" : [ 10 , 10 , 10] , "interests" : { "game" : "game10" , "ball" : "ball10" , "other" : "nothing10"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f3"} , "userId" : "10010171" , "userName" : "Bill Tu1" , "gender" : "m1" , "age" : 1 , "rank" : [ 1 , 1 , 1] , "interests" : { "game" : "game1" , "ball" : "ball1" , "other" : "nothing1"}}
userName!='Bill Tu10' and age>7的记录为：
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fa"} , "userId" : "10010178" , "userName" : "Bill Tu8" , "gender" : "m8" , "age" : 8 , "rank" : [ 8 , 8 , 8] , "interests" : { "game" : "game8" , "ball" : "ball8" , "other" : "nothing8"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fb"} , "userId" : "10010179" , "userName" : "Bill Tu9" , "gender" : "m9" , "age" : 9 , "rank" : [ 9 , 9 , 9] , "interests" : { "game" : "game9" , "ball" : "ball9" , "other" : "nothing9"}}
age>=2 and age<=7的记录为：
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f4"} , "userId" : "10010172" , "userName" : "Bill Tu2" , "gender" : "m2" , "age" : 2 , "rank" : [ 2 , 2 , 2] , "interests" : { "game" : "game2" , "ball" : "ball2" , "other" : "nothing2"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f5"} , "userId" : "10010173" , "userName" : "Bill Tu3" , "gender" : "m3" , "age" : 3 , "rank" : [ 3 , 3 , 3] , "interests" : { "game" : "game3" , "ball" : "ball3" , "other" : "nothing3"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f6"} , "userId" : "10010174" , "userName" : "Bill Tu4" , "gender" : "m4" , "age" : 4 , "rank" : [ 4 , 4 , 4] , "interests" : { "game" : "game4" , "ball" : "ball4" , "other" : "nothing4"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f7"} , "userId" : "10010175" , "userName" : "Bill Tu5" , "gender" : "m5" , "age" : 5 , "rank" : [ 5 , 5 , 5] , "interests" : { "game" : "game5" , "ball" : "ball5" , "other" : "nothing5"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f8"} , "userId" : "10010176" , "userName" : "Bill Tu6" , "gender" : "m6" , "age" : 6 , "rank" : [ 6 , 6 , 6] , "interests" : { "game" : "game6" , "ball" : "ball6" , "other" : "nothing6"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f9"} , "userId" : "10010177" , "userName" : "Bill Tu7" , "gender" : "m7" , "age" : 7 , "rank" : [ 7 , 7 , 7] , "interests" : { "game" : "game7" , "ball" : "ball7" , "other" : "nothing7"}}
rank in all(7,7)的记录为：
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f9"} , "userId" : "10010177" , "userName" : "Bill Tu7" , "gender" : "m7" , "age" : 7 , "rank" : [ 7 , 7 , 7] , "interests" : { "game" : "game7" , "ball" : "ball7" , "other" : "nothing7"}}
age not in (2,3)的记录为：
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f3"} , "userId" : "10010171" , "userName" : "Bill Tu1" , "gender" : "m1" , "age" : 1 , "rank" : [ 1 , 1 , 1] , "interests" : { "game" : "game1" , "ball" : "ball1" , "other" : "nothing1"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f6"} , "userId" : "10010174" , "userName" : "Bill Tu4" , "gender" : "m4" , "age" : 4 , "rank" : [ 4 , 4 , 4] , "interests" : { "game" : "game4" , "ball" : "ball4" , "other" : "nothing4"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f7"} , "userId" : "10010175" , "userName" : "Bill Tu5" , "gender" : "m5" , "age" : 5 , "rank" : [ 5 , 5 , 5] , "interests" : { "game" : "game5" , "ball" : "ball5" , "other" : "nothing5"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f8"} , "userId" : "10010176" , "userName" : "Bill Tu6" , "gender" : "m6" , "age" : 6 , "rank" : [ 6 , 6 , 6] , "interests" : { "game" : "game6" , "ball" : "ball6" , "other" : "nothing6"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f9"} , "userId" : "10010177" , "userName" : "Bill Tu7" , "gender" : "m7" , "age" : 7 , "rank" : [ 7 , 7 , 7] , "interests" : { "game" : "game7" , "ball" : "ball7" , "other" : "nothing7"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fa"} , "userId" : "10010178" , "userName" : "Bill Tu8" , "gender" : "m8" , "age" : 8 , "rank" : [ 8 , 8 , 8] , "interests" : { "game" : "game8" , "ball" : "ball8" , "other" : "nothing8"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fb"} , "userId" : "10010179" , "userName" : "Bill Tu9" , "gender" : "m9" , "age" : 9 , "rank" : [ 9 , 9 , 9] , "interests" : { "game" : "game9" , "ball" : "ball9" , "other" : "nothing9"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fc"} , "userId" : "100101710" , "userName" : "Bill Tu10" , "gender" : "m10" , "age" : 10 , "rank" : [ 10 , 10 , 10] , "interests" : { "game" : "game10" , "ball" : "ball10" , "other" : "nothing10"}}
age>3 or rank in all(1,1)的记录为：
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f3"} , "userId" : "10010171" , "userName" : "Bill Tu1" , "gender" : "m1" , "age" : 1 , "rank" : [ 1 , 1 , 1] , "interests" : { "game" : "game1" , "ball" : "ball1" , "other" : "nothing1"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f6"} , "userId" : "10010174" , "userName" : "Bill Tu4" , "gender" : "m4" , "age" : 4 , "rank" : [ 4 , 4 , 4] , "interests" : { "game" : "game4" , "ball" : "ball4" , "other" : "nothing4"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f7"} , "userId" : "10010175" , "userName" : "Bill Tu5" , "gender" : "m5" , "age" : 5 , "rank" : [ 5 , 5 , 5] , "interests" : { "game" : "game5" , "ball" : "ball5" , "other" : "nothing5"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f8"} , "userId" : "10010176" , "userName" : "Bill Tu6" , "gender" : "m6" , "age" : 6 , "rank" : [ 6 , 6 , 6] , "interests" : { "game" : "game6" , "ball" : "ball6" , "other" : "nothing6"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f9"} , "userId" : "10010177" , "userName" : "Bill Tu7" , "gender" : "m7" , "age" : 7 , "rank" : [ 7 , 7 , 7] , "interests" : { "game" : "game7" , "ball" : "ball7" , "other" : "nothing7"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fa"} , "userId" : "10010178" , "userName" : "Bill Tu8" , "gender" : "m8" , "age" : 8 , "rank" : [ 8 , 8 , 8] , "interests" : { "game" : "game8" , "ball" : "ball8" , "other" : "nothing8"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fb"} , "userId" : "10010179" , "userName" : "Bill Tu9" , "gender" : "m9" , "age" : 9 , "rank" : [ 9 , 9 , 9] , "interests" : { "game" : "game9" , "ball" : "ball9" , "other" : "nothing9"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fc"} , "userId" : "100101710" , "userName" : "Bill Tu10" , "gender" : "m10" , "age" : 10 , "rank" : [ 10 , 10 , 10] , "interests" : { "game" : "game10" , "ball" : "ball10" , "other" : "nothing10"}}
not(age>3 or rank in all(1,1))的记录为：
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f4"} , "userId" : "10010172" , "userName" : "Bill Tu2" , "gender" : "m2" , "age" : 2 , "rank" : [ 2 , 2 , 2] , "interests" : { "game" : "game2" , "ball" : "ball2" , "other" : "nothing2"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f5"} , "userId" : "10010173" , "userName" : "Bill Tu3" , "gender" : "m3" , "age" : 3 , "rank" : [ 3 , 3 , 3] , "interests" : { "game" : "game3" , "ball" : "ball3" , "other" : "nothing3"}}
rank数组大小为３的记录为：
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f3"} , "userId" : "10010171" , "userName" : "Bill Tu1" , "gender" : "m1" , "age" : 1 , "rank" : [ 1 , 1 , 1] , "interests" : { "game" : "game1" , "ball" : "ball1" , "other" : "nothing1"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f4"} , "userId" : "10010172" , "userName" : "Bill Tu2" , "gender" : "m2" , "age" : 2 , "rank" : [ 2 , 2 , 2] , "interests" : { "game" : "game2" , "ball" : "ball2" , "other" : "nothing2"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f5"} , "userId" : "10010173" , "userName" : "Bill Tu3" , "gender" : "m3" , "age" : 3 , "rank" : [ 3 , 3 , 3] , "interests" : { "game" : "game3" , "ball" : "ball3" , "other" : "nothing3"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f6"} , "userId" : "10010174" , "userName" : "Bill Tu4" , "gender" : "m4" , "age" : 4 , "rank" : [ 4 , 4 , 4] , "interests" : { "game" : "game4" , "ball" : "ball4" , "other" : "nothing4"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f7"} , "userId" : "10010175" , "userName" : "Bill Tu5" , "gender" : "m5" , "age" : 5 , "rank" : [ 5 , 5 , 5] , "interests" : { "game" : "game5" , "ball" : "ball5" , "other" : "nothing5"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f8"} , "userId" : "10010176" , "userName" : "Bill Tu6" , "gender" : "m6" , "age" : 6 , "rank" : [ 6 , 6 , 6] , "interests" : { "game" : "game6" , "ball" : "ball6" , "other" : "nothing6"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f9"} , "userId" : "10010177" , "userName" : "Bill Tu7" , "gender" : "m7" , "age" : 7 , "rank" : [ 7 , 7 , 7] , "interests" : { "game" : "game7" , "ball" : "ball7" , "other" : "nothing7"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fa"} , "userId" : "10010178" , "userName" : "Bill Tu8" , "gender" : "m8" , "age" : 8 , "rank" : [ 8 , 8 , 8] , "interests" : { "game" : "game8" , "ball" : "ball8" , "other" : "nothing8"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fb"} , "userId" : "10010179" , "userName" : "Bill Tu9" , "gender" : "m9" , "age" : 9 , "rank" : [ 9 , 9 , 9] , "interests" : { "game" : "game9" , "ball" : "ball9" , "other" : "nothing9"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37fc"} , "userId" : "100101710" , "userName" : "Bill Tu10" , "gender" : "m10" , "age" : 10 , "rank" : [ 10 , 10 , 10] , "interests" : { "game" : "game10" , "ball" : "ball10" , "other" : "nothing10"}}
userName exists false的记录为：
age%2==0的记录为：
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f4"} , "userId" : "10010172" , "userName" : "Bill Tu2" , "gender" : "m2" , "age" : 2 , "rank" : [ 2 , 2 , 2] , "interests" : { "game" : "game2" , "ball" : "ball2" , "other" : "nothing2"}}
{ "_id" : { "$oid" : "4dd8a274b2d556790b0b37f6"} , "userId" : "10010174" , "userName" : "Bill Tu4" , "gender" : "m4" , "age" : 4 , "rank" : [ 4 , 4 , 4] , "interests" : { "game" : "game4" , "ball" : "ball4" , "other" : "nothing4"}}
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