57 lines
2.5 KiB
Markdown
57 lines
2.5 KiB
Markdown
# 1. Goal
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An IT asset manager consolidates the software licence records of two
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subsidiaries. A reporting program calls one service that merges the two lists
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into one list. The result has one row for each product and cost centre.
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# 2. Open questions
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None.
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# 3. Context
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- The interface {{P}}IF_LICENCE_MERGE exists in package $TMP. It is active.
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- The interface has the type TY_PRODUCT (character, length 10), the type
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TY_COST_CENTRE (character, length 6), and the type TY_PRICE (packed number,
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length 8, 2 decimals).
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- The interface has the structure type TY_LICENCE with these components:
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PRODUCT (TY_PRODUCT), COST_CENTRE (TY_COST_CENTRE), SEATS (integer),
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UNIT_PRICE (TY_PRICE).
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- The interface has the table type TT_LICENCES. TT_LICENCES is a standard table
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of TY_LICENCE.
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- The interface has one method:
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MERGE
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IMPORTING it_primary TYPE tt_licences
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it_secondary TYPE tt_licences
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RETURNING VALUE(rt_merged) TYPE tt_licences.
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# 4. Contract
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- Create the class {{P}}LICENCE_MERGER in package $TMP.
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- The class is public, final, and has a public constructor without parameters.
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- The class implements {{P}}IF_LICENCE_MERGE.
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- Do not add other public methods.
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# 5. Business rules
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The method MERGE reads the two input tables IT_PRIMARY and IT_SECONDARY.
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1. Normalize the product and the cost centre of each input row: remove the
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leading and the trailing blanks and convert all letters to upper case.
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2. Ignore an input row if the normalized product is empty, or if the normalized
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cost centre is empty, or if the seats are less than 1.
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3. All remaining input rows with the same product and the same cost centre
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become one result row. Rows of the same input table and rows of different
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input tables are combined in the same way.
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4. The seats of a result row are the sum of the seats of its input rows.
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5. The unit price of a result row is the highest unit price of its input rows.
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6. The result has one row for each pair of product and cost centre that has at
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least one remaining input row.
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7. Sort the result by product in ascending order. If two rows have the same
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product, sort them by cost centre in ascending order.
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# 6. Constraints
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- Release target: ABAP Platform 2025 (SAP_BASIS 816).
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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: do not change {{P}}IF_LICENCE_MERGE.
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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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