Crud-json-array NPM

crud-json-array

This module is for creating and manipulating JSON array, i.e create table, insert row, update row, select row and delete row. useful for small data like storing settings on servers

install with this command

npm i crud-json-array

reqiure this module

    var DB = require("crud-json-array");

    var curDB = new DB.CRUD();

create destination folder

    curDB.create_database("test");

create table inside folder

    curDB.create_table("fTable",["name", "age", "sex"]);

Code to create more than one table

Each instance of this module produces only one table i.e table_name.json

    //below exmple shows way to create three table in side folder data
    var DB = require("crud-json-array");

    var curTable_1 = new DB.CRUD("data");
    curTable_1.create_table("fTable",["name", "age", "sex"]);

    var curTable_2 = new DB.CRUD("data");
    curTable_2.create_table("fTable",["paper1", "paper2", "paper3"]);

    var curTable_3 = new DB.CRUD("data);
    curTable_3.create_table("fTable",["taet1", "test2", "test3"]);

Format of table

    {
        "array" : [
            ["Name", "Age", "Sex" ] //first row i.e 0 index is name of column
            ,["Raju", 18, "Male"]
            ,["Mangala", 34, "Female"]
        
        ]
    }

insert row

    curDB.insert_one_row(["Rithik", 47, "male"]);
    curDB.insert_one_row(["Varun", 27, "male"]);

find single row

    var index = curDB.find_one_row([0,"Rithik"]);//0 is for column index
    console.log(index);

update row

    curDB.update_one_row(["Raman", 18, "Male"], [0, "Rithik"]); //0 is for column index

delete row

    curDB.delete_one_row([0, "Umesh"]);

read table (all)

Two ways to read
1. from file `var tableFile = curDB.read_table_from_file();`
2. from memory `var tableMemory = curDB.read_table_in_memory()`

use in Momery method, avoid from file method