Background
Students courses in Schoolworks are represented by a Start Date and End date.
We store the student’s course booking in an object called Booking__c
Student Courses might look like:
Booking__c
Student Id | Start Date | End Date | Status |
|---|---|---|---|
1234 | 25/3/24 | 19/4/24 | Booked |
2345 | 5/2/24 | 21/3/24 | Booked |
3456 | 3/1/24 | 13/11/24 | Booked |
4567 | 13/2/24 | 10/10/24 | Cancelled |
5678 | 26/3/24 | 28/3/24 | Booked |
Each booking has a status - ‘Booked’ and ‘Cancelled’.
One of the most common queries needed in Schoolworks, is one to find all students ‘here’ (i.e. considered to be in school) across a period.
The period might be a month (1/3/24 to 31/3/24), week (24/5/24 to 28/5/24) or any period dates.
A student is deemed to be ‘here' (i.e. in school) if their course dates are across the period dates.
e.g. 3 students are in school (above) for period 25/3/24 to 29/3/24.
Development task
Please write a Salesforce Apex method, with input parameters - periodStartDate, periodEndDate, that returns a list of students 'here' across the period, from the object Booking__c, which has the fields, Student_Id, Booking_Start_Date__c, Booking_End_Date__c, Status__c. where Booking Start/End dates are across PeriodStart/End dates and Status = "Booked".
Please demonstrate development best practices, including considerations for NULL, Error management, comments and anything else you consider to be important in your submission.
Imagine this code, has to work, like a rocket launched to the moon.
Extension task
Additionally, please exclude any students from the list, who may be on holiday, i.e. every day, across the whole Period Start/End.
Holidays are stored in another object Holidays__c with fields, Student_Id, Holiday_Start_Date__c and Holiday_End_Date__c, Status__c.
The status for a valid holiday is "Booked".
Holiday__c
Student Id | Start Date | End Date | Status |
|---|---|---|---|
1234 | 1/3/24 | 1/3/24 | Booked |
1234 | 2/3/24 | 3/3/24 | Booked |
2345 | 19/2/24 | 21/2/24 | Booked |
1234 | 26/3/24 | 26/3/24 | Booked |
3456 | 20/3/24 | 26/3/24 | Booked |
3456 | 27/3/24 | 30/4/24 | Booked |
5678 | 27/3/24 | 27/3/24 | Booked |
e.g. 2 students are in school for the period 25/3/24 to 29/3/24 if we now exclude those on holiday for this period.
Further questions
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Your submission
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