abap-llm/tasks_gen/train/G1123/spec.md

1. Goal

An airport charges a landing fee and a passenger fee for each aircraft movement. The operations desk calls the calculation before it issues the invoice.

2. Open questions

None.

3. Context

• The class {{P}}AIRPORT_FEE is new. It is in package $TMP.
• The airport uses short codes. A weight class has one character. A noise zone has two characters. A night flag has one character. A currency has three characters.
• The landing fee is charged for each tonne of the maximum take-off mass.

4. Contract

• Create the class {{P}}AIRPORT_FEE in package $TMP.
• The class is public, final, and has a public constructor without parameters.
• Define these public types:
  • TY_CLASS TYPE c LENGTH 1
  • TY_ZONE TYPE c LENGTH 2
  • TY_FLAG TYPE c LENGTH 1
  • TY_CURR TYPE c LENGTH 3
  • TY_AMOUNT TYPE p LENGTH 10 DECIMALS 2
• Define these public methods:
  • LANDING_FEE IMPORTING iv_class TYPE ty_class iv_zone TYPE ty_zone iv_night TYPE ty_flag iv_currency TYPE ty_curr iv_tonnes TYPE i RETURNING VALUE(rv_fee) TYPE ty_amount
  • PASSENGER_FEE IMPORTING iv_zone TYPE ty_zone iv_currency TYPE ty_curr iv_passengers TYPE i RETURNING VALUE(rv_fee) TYPE ty_amount
• Do not add other public methods.

5. Business rules

5.1 Landing fee

Apply the rules in this sequence.

1. If iv_currency is not EUR, USD or CHF, return 0.00.
2. If iv_class is not L, M or H, return 0.00.
3. If iv_tonnes is less than 1, return 0.00.
4. The base fee for one tonne is 12.50 EUR for L, 24.50 EUR for M and 52.50 EUR for H.
5. The noise zone gives a surcharge on the base fee for one tonne. Z1 gives 0 percent, Z2 gives 12.5 percent and Z3 gives 27.5 percent. Any other zone gives 0 percent.
6. If iv_night is N, add 7.50 EUR to the fee for one tonne.
7. Convert the fee for one tonne with the currency rate and round it to 2 decimals. EUR is 1.00, USD is 1.15 and CHF is 0.85.
8. Multiply the rounded fee for one tonne by iv_tonnes. The result is the landing fee.

5.2 Passenger fee

Apply the rules in this sequence.

1. If iv_currency is not EUR, USD or CHF, return 0.00.
2. If iv_passengers is less than 1, return 0.00.
3. The fee for one passenger is 12.37 EUR.
4. The noise zone gives a surcharge for each passenger. Z1 gives 0.00 EUR, Z2 gives 1.45 EUR and Z3 gives 2.90 EUR. Any other zone gives 0.00 EUR.
5. Convert the fee for one passenger with the currency rate and round it to 2 decimals. EUR is 1.00, USD is 1.15 and CHF is 0.85.
6. Multiply the rounded fee for one passenger by iv_passengers. The result is the passenger fee.

6. Constraints

• Release target: SAP_BASIS 8.16 (ABAP Platform 2025).
• Coding standards: Clean ABAP. Method length below 40 statements. No global variables.
• Out of scope: no database access, no ALV list, no CDS view.

7. Acceptance

• The class is active and has no syntax error.
• The hidden tests pass.
• Write your own ABAP Unit tests for the class.