75 lines
2.6 KiB
Markdown
75 lines
2.6 KiB
Markdown
# 1. Goal
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A fishing cooperative auctions the catch of its boats. Each boat reports its catch
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as a list of entries. The auctioneer needs one consolidated list for each species.
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A program calls the class before it prints the auction list.
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# 2. Open questions
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None.
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# 3. Context
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- Package $TMP.
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- The class is new. No other object exists for this task.
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# 4. Contract
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Create the class {{P}}FISH_AUCTION in package $TMP.
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- The class is public and final.
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- The class has a public constructor without parameters.
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- Public types:
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- TY_SPECIES: character, length 10.
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- TY_BOAT_ID: character, length 10.
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- TY_CATCH: structure with the components BOAT_ID (type ty_boat_id),
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SPECIES (type ty_species), and WEIGHT_KG (type i).
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- TT_CATCH: table type of ty_catch. The table can hold more than one entry
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with the same boat ID and the same species.
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- TY_SUMMARY: structure with the components SPECIES (type ty_species),
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TOTAL_WEIGHT (type i), and BOAT_COUNT (type i).
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- TT_SUMMARY: table type of ty_summary.
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- Public methods:
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- SUMMARIZE, importing IT_CATCH type tt_catch, returning VALUE(RT_SUMMARY)
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type tt_summary.
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- BEST_SPECIES, importing IT_CATCH type tt_catch, returning VALUE(RV_SPECIES)
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type ty_species.
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- Do not add other public methods.
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# 5. Business rules
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SUMMARIZE:
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1. Do not change the input table.
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2. For each entry, build the species key: remove the leading and the trailing
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blanks from SPECIES and convert all letters to upper case.
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3. Ignore the entry if the species key is empty. Ignore the entry if WEIGHT_KG
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is zero or less.
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4. Group the remaining entries by the species key.
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5. TOTAL_WEIGHT of a group is the sum of WEIGHT_KG of all entries in the group.
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6. BOAT_COUNT of a group is the number of different boat IDs in the group.
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7. The result has one row for each group. The rows are in ascending order of the
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species key.
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8. If no entry remains, the result is empty.
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BEST_SPECIES:
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9. Build the groups with the rules 1 to 8.
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10. Return the species key of the group with the highest TOTAL_WEIGHT.
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11. If two groups have the same highest TOTAL_WEIGHT, return the species key that
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is first in ascending order.
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12. If there is no group, return an empty value.
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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 create or change other objects.
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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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