Mahtab Alam eMahtab

A Foodys guide

'' Part of the secret of success in life is to eat what you like - Mark Twain ''

I think each one of us loves eating, yes I know some were born to overeat. In this GraphGist we will see how a graph model can bring you closer to your favourite food. I usually have 6-7 cup of tea/coffee in a day which some people call as caffeine addiction but who cares. Next we will see how Neo4j can take you to the best buffet or latte place in the city

The Foody Model

Below is our Foody model, each restaurant is representated by a Node. Note that Restaurants are grouped by the area, IndiraNagar have Starbucks Coffee and Beanstalk, Frazer Town have Savoury Restaurant.

	MongoDB comes with a great aggregation framework, which allows to write queries to fetch whatever data you might be interested into.

	Before we even get into MongoDB aggreagtion and how to use it, first question is why we even need aggreagtion framework when we already have MongoDB query language and operations like find(), findOne(), limit(), skip(), sort(). The answer is aggregation framework is built into MongoDB to provide more complex analytics oriented functionality.


	Lets dive into MongoDB aggregation framework and see what it have to offer.

	Before getting into details of the aggreagtion framework lets see what all stages are available in MongoDB aggreation framework.

	1. $match

	<script>

	var width=1200;
	var height=640;

	var canvas=d3.select("body")
	.append("svg")
	.attr("width",width)
	.attr("height",height)
	.append("g")

	var width = 1300,
	height = 645
	var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height);

	var colorScale=d3.scale.linear().range(["green","darkgreen"])

	var force = d3.layout.force()
	.gravity(0.05)

	<html>
	<head>
	<style>
	#myTypingText {
	padding:12px;
	color:#FFF;
	font-family:Courier New, Helvetica, sans-serif;
	font-size:20px;
	line-height:1.5em;
	}

	<html>
	<head>
	<style>
	#myTypingText {
	background-color:#000;
	width:700px;
	height:120px;
	padding:12px;
	color:#FFF;
	font-family:Arial, Helvetica, sans-serif;

	b = db.products_bak; db.products.find().forEach( function(o){ b.insert(o) } )
	// check it worked:
	b.count()

	import java.util.ArrayList;
	import java.util.List;
	import java.util.Scanner;

	public class StringReversal2 {

	public static void main(String[] args) {

	Scanner sc=new Scanner(System.in);
	String input=sc.nextLine();