60 lines
2.6 KiB
Markdown
60 lines
2.6 KiB
Markdown
# 1. Goal
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A wholesaler buys materials from two suppliers. Each supplier sends a price list.
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The purchasing team needs one merged list. The list shows, for each material, the
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lowest price and the supplier that offers this price.
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# 2. Open questions
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None.
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# 3. Context
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- The class is new. It is in package $TMP.
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- The class does not read a database table. The caller passes the two price lists.
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# 4. Contract
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- Create the class {{P}}QUOTE_MERGER in package $TMP.
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- The class is public, final, and has a public constructor without parameters.
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- Public types:
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* TY_PRICE: packed number, length 11, 2 decimal places.
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* TY_QUOTE: structure with the components MATERIAL (CHAR 18), SUPPLIER (CHAR 10)
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and PRICE (TY_PRICE).
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* TT_QUOTE: standard table of TY_QUOTE with default key.
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* TY_RESULT: structure with the components MATERIAL (CHAR 18), SUPPLIER (CHAR 10),
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PRICE (TY_PRICE) and QUOTE_COUNT (integer).
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* TT_RESULT: standard table of TY_RESULT with default key.
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- Public method MERGE:
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IMPORTING it_quotes_a TYPE tt_quote
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it_quotes_b TYPE tt_quote
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EXPORTING et_result TYPE tt_result
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ev_rejected TYPE i.
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- Do not add other public methods.
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# 5. Business rules
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1. The method reads all rows of it_quotes_a and all rows of it_quotes_b. The order
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of the two tables is not important.
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2. A row is invalid if its material contains only blanks, or if its price is zero
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or negative. Every invalid row increases ev_rejected by one. Invalid rows do not
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appear in et_result.
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3. All valid rows with the same material belong to one group.
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4. et_result has exactly one row for each group. The PRICE of this row is the
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lowest price of all valid rows in the group.
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5. The SUPPLIER of this row is the supplier of a valid row that has this lowest
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price. If more than one valid row has this lowest price, use the supplier that
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is first in ascending order of the supplier name.
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6. QUOTE_COUNT is the number of valid rows in the group. A row that appears two
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times counts two times.
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7. Sort et_result in ascending order of material.
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8. If no valid row exists, et_result is empty and ev_rejected is the number of
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invalid rows.
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9. The method does not change it_quotes_a or it_quotes_b.
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# 6. Constraints
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- Release target: SAP_BASIS 816 (ABAP Platform 2025).
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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 CDS view, no report, no function module.
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# 7. Acceptance
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- The class is active and has no syntax error.
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- The hidden tests pass.
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- Write your own ABAP Unit tests for the class.
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