dataweave1katas

https://docs.mulesoft.com/mule-user-guide/v/3.9/dataweave-operators

Exercise 1

say Hello, World!

Excercise 2

Given the src/test/resources/input/exercise2-in.json, produce output as xml that capitalizes the first and last name. Also, make the state abreviation all upper case.

See src/test/resources/output/exercise2-out.xml for expected output.

Exercise 3

Given the src/test/resources/input/national_championship.xml, produce output as json that is a list of all id's and first and last name concatinated together.

See src/test/resources/output/exercise3-out.json for expected output.

Exercise 4

Given the src/test/resources/input/national_championship.xml, produce output as json that is a list of id's and distance traveled. Order by shortest to farthest distance traveled.

See src/test/resources/output/exercise4-out.json for expected output.

Exercise 5

Given the src/test/resources/input/national_championship.xml, produce output as json that contains the following metrics:

• totalAge - Summed total age of all attendees
• avgAgeInt - Average age of all attendees as an Integer
• avgAgeFloat - Average age of all attendees as a Float to nearest tenth
• oldest - age of the oldest attendee
• youngest - age of the youngest attendee

See src/test/resources/output/exercise5-out.json for expected output.

Exercise 6

Given the src/test/resources/input/national_championship.xml, reorder output by team, last name, and first name.

See src/test/resources/output/exercise6-out.json for expected output.

Exercise 7

Given the src/test/resources/input/national_championship.xml, produce output as json that groups fans of the same team together, then sorts by the fans by last name, then first name.

See src/test/resources/output/exercise7-out.json for expected output.

Exercise 8

Given the src/test/resources/input/list_of_states.json, produce output as json that removes all directional states (States that start with North, South, East, or West) from the list.

See src/test/resources/output/exercise8-out.json for expected output.

Exercise 9

Given the src/test/resources/input/list_of_states.json:

• Make the flowVariable abbrToName contain json that maps the abbreviation to the state name.
• Make the flowVariable nameToAbbr contain json that maps the state name to the abbreviation.
• Do not change the payload.

See src/test/resources/output/exercise9-abbr-to-name-out.json for abbrToName flowVars expected output and src/test/resources/output/exercise9-name-to-abbr-out.json for nameToAbbr flowVars expected output.

Exercise 10

Given the src/test/resources/input/list_of_states.json, produce output as json that contains:

• abbreviation - All state abbreviations combined together in a comma seperated string.
• names - All state names combined together in a comma seperated string.

See src/test/resources/output/exercise10-out.json for expected output.

Exercise 11

Given src/test/resources/input/list_of_states_dupes.json, remove duplicates and order the results in reverse alphabetical order.

See src/test/resources/output/exercise11-out.json for expected output.

Exercise 12

Given src/test/resources/input/potential_palindromes.json produce json that contains: Note: do not consider white space, case, or non alphanumeric characters when determining if something is a palindrome or not.

• allPalindromes - true or false, identifies if all items in the list are palindromes (same forward or backwards)
• palindromes - comma seperated string of all palindromes
• containsNumericPalindromes - true or false, identifies if at least one list entry is a palindrome and is also contains only numerical values
• numericPalindromes - pipe, |, seperated string of all palindromes

See src/test/resources/output/exercise12-out.json for expected output.

Exercise 13

Recreate FizzBuzz, https://en.wikipedia.org/wiki/Fizz_buzz, with dataweave. The output will be a json object where the key is the number, and the value is either the number, Fizz, Buzz, or Fizz Buzz: { "1": "1", "2": "2", "3": "Fizz", .... }

See src/test/resources/output/exercise13-out.json for expected output.

Exercise 14

Take the results of FizzBuzz (Exercise 13) and create three lists, one that is all the odd number entries, one that is all the even, and a third that contains all entries that are prime. The prime calculation will be handled by the isPrime flow, call it from dataweave. { "evens": [], "odds": [], "primes": [] }

See src/test/resources/output/exercise14-out.json for expected output.

Exercise 15

Recombine the results of above Exercise 14, src/test/resources/input/evens_odds_primes.json, into an object that has a key of the number, and a value of the ordinalNumber: { "1":"1st", "2":"2nd" }

See src/test/resources/output/exercise15-out.json for expected output.

Other ideas from our list I don't think are covered yet

Hamming
Trim whitespace (adjust one of the above?)
date coercion
MapObject
Pluck
create and and write a csv
zip array
split string into an array