Nội dung kiến thức:
	- Mongodb shell:
		- CSDL
			- Tạo
			- Drop
		- Collections
			- Thêm
			- Xóa (Drop)
		- Thêm document
		- Sửa document
		- Xóa document
		- Query:
==========================================================
Dự án bán hàng:
1) Hệ quản trị CSDL quan hệ (SQL)
	- categories
		id: tự tăng
		name: tên danh mục
	- products
		id: tự tăng
		title
		price
		thumbnail
		content
		updated_at
		created_at
		category_id: foreign key categories (id)
	- orders
		id: tự tăng
		fullname
		phone_number
		email
		address
		order_date
		total_price
	- order_detail
		id: tự tăng
		product_id
		order_id
		price
		num
====================================
categories:
[
	{
		id:
		name:
	},
	{
		id:
		name: 
	}
]

products:
[
	{
		id:
		category_id: ???
		title:
		price:
		thumbnail:
		content:
		created_at:
		updated_at:
	}
]

orders:
[
	{
		id:
		fullname:
		phone_number:
		email:
		address:
		order_date:
		total_price:
		productList: [
			{
				product_id
				title
				thumbnail
				price
				num
			}, {
				product_id
				title
				thumbnail
				price
				num
			}
		]
	}
]

MongoDB Shell:
- https://www.mongodb.com/try/download/shell
- https://www.tutorialspoint.com/mongodb/mongodb_create_database.htm#:~:text=The%20use%20Command,will%20return%20the%20existing%20database.

#Main.java

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 */
package com.gokisoft;

import com.mongodb.MongoClient;
import com.mongodb.MongoClientURI;
import com.mongodb.client.FindIterable;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import org.bson.Document;
import org.bson.conversions.Bson;

/**
 * https://mvnrepository.com/artifact/org.mongodb/bson/4.10.2
 * https://mvnrepository.com/artifact/org.mongodb/mongo-java-driver/3.12.14
 * @author teacher
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
//        dumpData();
        insert();
    }
    
    /**
     * https://www.mongodb.com/developer/languages/java/java-setup-crud-operations/
     */
    static void insert() {
        //B1. Ket noi vao CSDL
        MongoClient mongoClient = new MongoClient(
                new MongoClientURI(
                        "mongodb://localhost:27017/"
                )
        );
        MongoDatabase database = mongoClient.getDatabase("webbanhang");
        
        //B2. Insert du lieu vao Collection > categories
        Document category = new Document();
        category.append("name", "Test insert from Java");
        
        database.getCollection("categories").insertOne(category);
    }
    
    static void dumpData() {
        Bson filter = new Document();

        MongoClient mongoClient = new MongoClient(
                new MongoClientURI(
                        "mongodb://localhost:27017/"
                )
        );
        MongoDatabase database = mongoClient.getDatabase("webbanhang");
        MongoCollection<Document> collection = database.getCollection("categories");
        FindIterable<Document> result = collection.find(filter);
        
        for (Document document : result) {
            System.out.println(document.toJson());
        }
    }
}

#Test.java

/*
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 */
package com.gokisoft;

import java.util.List;
import models.Category;
import mongodb.CategoryCRUD;

/**
 *
 * @author teacher
 */
public class Test {
    public static void main(String[] args) {
        List<Category> dataList = CategoryCRUD.getList();
        
        for (Category category : dataList) {
            System.out.println(category);
        }
    }
}

#Category.java

/*
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 * and open the template in the editor.
 */
package models;

import org.bson.Document;
import org.bson.types.ObjectId;

/**
 *
 * @author teacher
 */
public class Category {
    ObjectId _id;
    String name;

    public Category() {
    }

    public Category(ObjectId _id, String name) {
        this._id = _id;
        this.name = name;
    }

    public ObjectId getId() {
        return _id;
    }

    public void setId(ObjectId _id) {
        this._id = _id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
    
    public void readDocument(Document doc) {
        this._id = doc.getObjectId("_id");
        this.name = doc.getString("name");
    }

    @Override
    public String toString() {
        return "Category{" + "_id=" + _id.toString() + ", name=" + name + '}';
    }
}

#BaseCRUD.java

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package mongodb;

import com.mongodb.MongoClient;
import com.mongodb.MongoClientURI;
import com.mongodb.client.MongoDatabase;

/**
 *
 * @author teacher
 */
public class BaseCRUD {
    static MongoClient mongoClient;
    static MongoDatabase database;
    
    static void open() {
        //B1. Ket noi vao CSDL
        mongoClient = new MongoClient(
                new MongoClientURI(
                        "mongodb://localhost:27017/"
                )
        );
        database = mongoClient.getDatabase("webbanhang");
    }
}

#CategoryCRUD.java

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package mongodb;

import com.mongodb.client.FindIterable;
import com.mongodb.client.MongoCollection;
import java.util.ArrayList;
import java.util.List;
import models.Category;
import org.bson.Document;
import org.bson.conversions.Bson;

/**
 *
 * @author teacher
 */
public class CategoryCRUD extends BaseCRUD{
    static final String COLLECTION_NAME = "categories";
    
    public static void insert(Category item) {
        open();
        
        Document doc = new Document();
        doc.append("name", item.getName());
        
        database.getCollection(COLLECTION_NAME).insertOne(doc);
    }
    
    public static List<Category> getList() {
        List<Category> dataList = new ArrayList<>();
        
        open();
        
        Bson filter = new Document();
        MongoCollection<Document> collection = database.getCollection(COLLECTION_NAME);
        FindIterable<Document> result = collection.find(filter);
        
        for (Document document : result) {
            Category item = new Category();
            item.readDocument(document);
            dataList.add(item);
        }
        
        return dataList;
    }
}