CSE512-Assignment 5 MongoDB Solved

The required task is two write two functions, which will perform some textual and spatial searching on MongoDB. Details are explained below.

 

      Steps for Assignments: - 

1.                        Install MongoDB 2.6.11.

2.                        Install pymongo to act as helper interface with MongoDB.

3.                        Run the tester file to check everything runs and nothing fails.

 

4.                        Now, Implement the function provided in Assignment5_Interface.py to              perform the operations as listed below:

a.      FindBusinessBasedOnCity(cityToSearch, saveLocation1, collection) 

This function searches the ‘collection’ given to find all the business present in the city provided in ‘cityToSearch’ and save it to ‘saveLocation1’. For each business you found, you should store name Full address, city, state of

                              business in the following format.

Each line of the saved file will contain,

Name$FullAddress$City$State. ($ is the separator and must be

                                    present)

b.      FindBusinessBasedOnLocation(categoriesToSearch, myLocation, 

                              maxDistance, saveLocation2, collection) 

This function searches the ‘collection’ given to find name of all the business present in the ‘maxDistance’ from the given ‘myLocation’ that covers all the given categories (the business                   category            needs    to match            at least one        of the given        categories)  (please use         the distance                   algorithm                      given     below) and save them                       to ‘

saveLocation2’.        Each line of the output file will contain the name of the business       only.                                                                                          

-- categoriesToSearch:                a list of categories           need to be covered -- ‘myLocation’ will be given      with format       [“40.3”, “51.6”].

                                    -- maxDistance: the  search  distance

NOTE: - Please Make sure all fields are in Uppercase while writing in file, makes it -- saveLocation2: output location easy to check. ☺ 

 

      Files given to you: - 

Assignment5_Interface.py - You should complete this file. You would need to implement the function present in this file.

 

testData.json – This is the json file which is used as a document to put inside

                  MongoDb. The structure of one record of this file is < Key value pair>: -

                  { 

                  'type': 'business',

                  'business_id': (encrypted business id),

                  'name': (business name),

                  'neighborhoods': [(hood names)],

                  'full_address': (localized address),

                  'city': (city),

                  'state': (state),

                  'latitude': latitude,

                  'longitude': longitude,

                       'categories': [(localized category names)]

                       'open': True / False (corresponds to permanently closed, not business hours),

}

 

                       Example: - 

                      {"city": "Ahwatukee",

                       "review_count": 3,

                      "name": "McDonald's",

                       "neighborhoods": [],

                       "type": "business",

                      "business_id": "LNdwp-9Isnd6xmBKUz4K_A",

                       "full_address": "10823 S 51st St\nAhwatukee, AZ 85044",

                       "state": "AZ",

                      "longitude": -111.975004,

                       "stars": 2.0,

                       "latitude": 33.348560900000003,

                       "open": true,

                       "categories": ["Burgers", "Fast Food", "Restaurants"]} Note: - The order of key value pair does not matter. 

 

tester.py – DO NOT change this file. This is just to help you run the code for your implementation.

 

        Distance Algorithm needs to be used: 

Given two pair of latitude and longitude as [lat2, lon2] and [lat1, lon1], you can   calculate the distance between them using the formula given below:

        DistanceFunction(lat2, lon2, lat1, lon1):

               var R = 3959; // miles   var φ1 = lat1.toRadians();   var φ2 = lat2.toRadians();

                    var Δφ = (lat2-lat1).toRadians();

var Δλ = (lon2-lon1).toRadians();

 

                     var a = Math.sin(Δφ/2) * Math.sin(Δφ/2) +

                                    Math.cos(φ1) * Math.cos(φ2) *

                Math.sin(Δλ/2) * Math.sin(Δλ/2);

                    var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a)); var d = R * c;

 

d is the distance between the given pair of latitude and longitude. The distance is in miles. Reference: http://www.movable-type.co.uk/scripts/latlong.html 

 

        Instructions for Assignment: - 

       Please follow these instructions closely else Marks will be deducted. 

1.                        Please follow the function signature as provided in the Assignment5_Interfacy.py. 

2.                        Please use the same database name and collection name as provided in the tester to         keep it consistent. 

3.                        Please use the same distance algorithm given above to make it consistent for everyone. 

4.                        Please make sure to run the file before submitting and make sure there is no              indentation error. In case of any compilation error, 0 marks will be given. 

5.                        Do not modify any function signature in Assignment5_Interface.py. In         case any modification is needed, please post the same on discussion board. 

6.                        For any case of doubt in the assignment, PLEASE USE Discussion Boards,              Individual mails would not be entertained. 

7.                        Also, It is an individual’s responsibilities to clarify his/her doubts, so read and use 

3            

Discussion Board extensively.