Initially a coding challenge assigned to be completed as "homework" this project serves as a display of my skills creating a command line app using Clojure. The prompt that was given to me is as follows:
" Step 1 - Build a system to parse and sort a set of records
Create a command line app that takes as input a file with a set of records in one of three formats described below, and outputs (to the screen) the set of records sorted in one of three ways.
Input
A record consists of the following 5 fields: last name, first name, gender, date of birth and favorite color. The input is 3 files, each containing records stored in a different format. You may generate these files yourself, and you can make certain assumptions if it makes solving your problem easier.
The pipe-delimited file lists each record as follows:
LastName | FirstName | Gender | FavoriteColor | DateOfBirthThe comma-delimited file looks like this:
LastName, FirstName, Gender, FavoriteColor, DateOfBirth
The space-delimited file looks like this:
LastName FirstName Gender FavoriteColor DateOfBirth
You may assume that the delimiters (commas, pipes and spaces) do not appear anywhere in the data values themselves. Write a program in a language of your choice to read in records from these files and combine them into a single set of records.
Output
Create and display 3 different views of the data you read in:
- Output 1 – sorted by gender (females before males) then by last name ascending.
- Output 2 – sorted by birth date, ascending.
- Output 3 – sorted by last name, descending.
Display dates in the format M/D/YYYY.
Step 2 - Build a REST API to access your system
Tests for this section are required as well. Within the same code base, build a standalone REST API with the following endpoints:
- POST /records - Post a single data line in any of the 3 formats supported by your existing code
- GET /records/gender - returns records sorted by gender
- GET /records/birthdate - returns records sorted by birthdate
- GET /records/name - returns records sorted by name
It's your choice how you render the output from these endpoints as long as it well structured data. These endpoints should return JSON. To keep it simple, don't worry about using a persistent datastore. "
As command line:
# no sorting
clj -m address-assignment.core f1 f2 ... fn
# sort by gender then by last name
clj -m address-assignment.core -s genderlast f1 f2 ... fn
# sort by dob
clj -m address-assignment.core -s dob f1 f2 ... fn
# sort by last name
clj -m address-assignment.core -s last f1 f2 ... fnAs server:
clj -m address-assignment.server 8000
# sorted by gender
curl http://localhost:8000/records/gender
# sorted by birthdate
curl http://localhost:8000/records/birthdate
# sorted by lastname
curl http://localhost:8000/records/name
# parse record line
curl -X POST -H "Content-Type: application/json" -d '{"data": "Canto,Susann,Female,Teal,5/8/2019"}' http://localhost:8000/recordsTesting:
clj -A:runnerFor testing purposes I created sample data using Mockaroo. In the context of this assignment, the assumption has been made that tabs are equivalent to spaces since spaces are not offered as a delimiter option on Mockaroo.
Note regarding spec Data that included superfluous whitespace (such as: "Linda Van Bullwinkle") has been deleted for testing purposes. I am operating on the assumption that the data going in is clean, uniform data.
This program and the accompanying materials are made available under the terms of the Eclipse Public License 2.0 which is available at http://www.eclipse.org/legal/epl-2.0.
This Source Code may also be made available under the following Secondary Licenses when the conditions for such availability set forth in the Eclipse Public License, v. 2.0 are satisfied: GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version, with the GNU Classpath Exception which is available at https://www.gnu.org/software/classpath/license.html.