03ab36149e
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014aUaQeLnwbb1zTpN7kHeat
86 lines
3.5 KiB
Markdown
86 lines
3.5 KiB
Markdown
# 1. Goal
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Calculate the internal price of a print job for the print shop of a company. A
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billing program calls the calculation before it charges the cost centre of a
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department. Invalid job data must raise a class-based exception.
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# 2. Open questions
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None.
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# 3. Context
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- Package $TMP. No other object exists for this topic.
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- The billing program catches the exceptions and shows the reason to the user.
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The names of the classes and their public components are fixed.
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# 4. Contract
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Create three classes in package $TMP.
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## {{P}}CX_PRINT_JOB_ERROR
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- Public, final, inherits from CX_ROOT.
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- Public type TY_REASON, character 10.
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- Public constant structure C_REASON with the components PAGES, COPIES, PAPER,
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COLOR and DEPT. The values are 'PAGES', 'COPIES', 'PAPER', 'COLOR' and
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'DEPT'.
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- Public attribute MV_REASON of type TY_REASON.
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- Public constructor with the importing parameter IV_REASON of type TY_REASON.
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The constructor writes IV_REASON to MV_REASON.
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## {{P}}CX_PRINT_LIMIT
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- Public, final, inherits from CX_ROOT.
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- Public attribute MV_PAGES of type I.
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- Public constructor with the importing parameter IV_PAGES of type I. The
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constructor writes IV_PAGES to MV_PAGES.
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## {{P}}PRINT_JOB_PRICER
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- Public, final, public constructor without parameters.
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- Public types: TY_PAPER (character 4), TY_COLOR (character 1), TY_DEPT
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(character 4), TY_PRICE (packed number, length 8, 2 decimals).
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- Public method CALCULATE_PRICE with these parameters:
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- IMPORTING IV_PAGES TYPE I
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- IMPORTING IV_COPIES TYPE I
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- IMPORTING IV_PAPER TYPE TY_PAPER
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- IMPORTING IV_COLOR TYPE TY_COLOR
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- IMPORTING IV_DEPT TYPE TY_DEPT
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- RETURNING VALUE(RV_PRICE) TYPE TY_PRICE
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- RAISING {{P}}CX_PRINT_JOB_ERROR and {{P}}CX_PRINT_LIMIT
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- Do not add other public methods.
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# 5. Business rules
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Apply the rules in this sequence.
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1. Check the input in this order. Raise the exception of the first rule that
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fails.
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1. IV_PAGES is smaller than 1: raise {{P}}CX_PRINT_JOB_ERROR with the
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reason PAGES.
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2. IV_COPIES is smaller than 1: raise {{P}}CX_PRINT_JOB_ERROR with the
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reason COPIES.
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3. IV_PAPER is not 'A4', 'A3' or 'A5': raise {{P}}CX_PRINT_JOB_ERROR with
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the reason PAPER.
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4. IV_COLOR is not 'C' or 'M': raise {{P}}CX_PRINT_JOB_ERROR with the
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reason COLOR.
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5. IV_DEPT is not 'SALE', 'HR', 'IT' or 'PROD': raise
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{{P}}CX_PRINT_JOB_ERROR with the reason DEPT.
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2. The total number of pages is IV_PAGES multiplied by IV_COPIES.
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3. If the total number of pages is greater than 5000, raise
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{{P}}CX_PRINT_LIMIT with MV_PAGES equal to the total number of pages.
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4. The price of one page is 0.03 for A5, 0.05 for A4 and 0.09 for A3. For the
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color mode 'C', multiply the price of one page by 4.
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5. The gross price is the total number of pages multiplied by the price of one
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page.
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6. Volume discount on the gross price: 10 per cent if the total number of
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pages is 1000 or more, 5 per cent if the total number of pages is 500 or
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more, otherwise no discount.
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7. The net price is the gross price minus the discount.
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8. If the net price is smaller than 1.00, the price is 1.00 (minimum charge).
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9. Return the price.
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# 6. Constraints
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- Release target: SAP_BASIS 8.16.
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- Coding standards: Clean ABAP. Method length below 40 statements. No global
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variables. No comment that restates the code.
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- Out of scope: no database table, no report, no function module, no CDS view.
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# 7. Acceptance
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- The three classes are active and have no syntax error.
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- The hidden tests pass.
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- Write your own ABAP Unit tests for {{P}}PRINT_JOB_PRICER.
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