Refactor the parsing logic to set up the reference between course and section using compound keys

[mikehquan19]

Refactor the parser in parser/courseParser.go and parser/sectionParser so that the course can reference the list of associated sections using their compound keys (combination of fields that uniquely identify the object) and vice versa.

For example, each course can be identified by:

{
   "subject_prefix": XX, 
   "course_number": YYYY, 
   "catalog_year": ZZ
}

instead of just mongo.Id (Same thing for section). How you want to set up this compound key is up to you as long as they are unique. You should only be concerned with the connection between course and section.

Refactoring the parser means that you will have to do the following things:

• Refactor the schema of course and section over the nebula-api repo
• Refactor the parsing logic between course and sections (main part)
• Refactor the course and section validating part in validator.go
• Refactor the test in courseParser_test.go, sectionParser_test.go, and validator_test.go.

While you work on this issue, make sure to pull or push to the compound-key branch that I created in both nebula-api & api-tools repo.

[mikehquan19]

@AtreyaG @SaKC124 @manjov123 Just pushed the POC to branch compound-key-approach, you can look at the code as reference. I removed all the tests in that branch as it's distracting, but you are supposed to modify the tests for the modified parsers.

[AtreyaG]

@mikehquan19 I pushed the refactored schemas to the compound-key branch in nebula-api. I should be good to push the refactored parsers in api-tools after the schemas are successfully merged.

[AtreyaG]

@mikehquan19 just pushed refactors parsers to compound-key in api-tools.

[mikehquan19]

@AtreyaG I have redesigned the compound-key schema on nebula-api/compound-key a little bit. The one thing I've noticed in the previous compound-key schemas is that it contains redundant information in the schema, which is not undesirable. Can you take a look and rewrite the parser according to it?

[mikehquan19]

@AtreyaG told me that you might be busy this semester with work and internship so @SaKC124 @manjov123, if you can help him out, that would be appreciated.

[AtreyaG]

I'll take a look at it.

[KBui4]

Hey @AtreyaG, just a heads up, while working on the section-professor keys, I ended up making a few changes to the section‑course code as well to get everything working. When you get a chance, please take a look at those changes too in #140.