96 lines
2.9 KiB
Plaintext
96 lines
2.9 KiB
Plaintext
using { sap.capire.performance as my } from '../db/schema';
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service PerformanceService {
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entity OrdersHeaders as projection on my.OrdersHeaders;
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entity OrdersItems as projection on my.OrdersItems;
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entity Books as projection on my.Books;
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entity Authors as projection on my.Authors;
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// static
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view OrdersItemsViewJoin as select
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OrdersHeaders.ID as Header_ID,
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OrdersHeaders.OrderNo as OrderNo,
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OrdersHeaders.buyer as buyer,
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OrdersHeaders.currency as currency,
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key OrdersItems.ID as Item_ID,
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OrdersItems.product as product,
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OrdersItems.quantity as quantity,
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OrdersItems.title as title,
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OrdersItems.price as price
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from OrdersHeaders JOIN OrdersItems on OrdersHeaders.ID = OrdersItems.Header.ID;
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// dynamic entity
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entity OrderItemsViewAssoc as projection on OrdersHeaders;
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// sort on right table
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view SortedOrdersJoin as select
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OrdersHeaders.ID as Header_ID,
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OrdersHeaders.OrderNo as OrderNo,
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OrdersHeaders.buyer as buyer,
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OrdersHeaders.currency as currency,
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key OrdersItems.ID as Item_ID,
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OrdersItems.product as product,
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OrdersItems.quantity as quantity,
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OrdersItems.title as title,
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OrdersItems.price as price
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from OrdersHeaders JOIN OrdersItems on OrdersHeaders.ID = OrdersItems.Header.ID
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order by title;
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// sort on items and join back to header via assoc
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view SortedOrdersAssoc as select
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from OrdersItems {*, Header.OrderNo, Header.buyer, Header.currency }
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order by OrdersItems.title;
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// filter on right table
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view FilteredOrdersJoin as select
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OrdersHeaders.ID as Header_ID,
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OrdersHeaders.OrderNo as OrderNo,
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OrdersHeaders.buyer as buyer,
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OrdersHeaders.currency as currency,
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key OrdersItems.ID as Item_ID,
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OrdersItems.product as product,
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OrdersItems.quantity as quantity,
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OrdersItems.title as title,
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OrdersItems.price as price
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from OrdersHeaders JOIN OrdersItems on OrdersHeaders.ID = OrdersItems.Header.ID
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where price > 100;
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// filter on items and join back to header via assoc
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view FilteredOrdersAssoc as select
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from OrdersItems {*, Header.OrderNo, Header.buyer, Header.currency }
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where OrdersItems.price > 100;
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// TODO avoid CASE -- Denormalization of expensive complex structures,
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// calculate on write instead of read
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// CASE -> try to remodel to avoid CASE, if re-modelling is not possible,
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// fill redundant fields at write
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entity OrdersItemsCaseView as projection on OrdersItems {
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*,
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case
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when quantity > 500 then 'Large'
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when quantity > 100 then 'Medium'
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else 'Small'
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end as category : String
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};
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extend my.OrdersItems with {
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itemCategory: String enum{ Small; Medium; Large;};
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// fill itemCategory at runtime in performance-service.js
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}
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entity OrdersItemsNoCaseView as projection on OrdersItems {
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*,
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itemCategory as category
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};
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}
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