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A ChatGPT-like chat app built with modern SAP technologies (CAP, SAPUI5) – Part 3/3A ChatGPT-like chat app built with modern SAP technologies (CAP, SAPUI5) – Part 3/3The SAPUI5 frontend of the sample, and mostly an argument for writing UI5 in TypeScript: ES imports in place of sap.ui.define, a class with real private members in place of the underscore convention, and the service types generated from the CDS model copied into the UI package, so one IChats interface types the OData object the controller reads. The second half is structure — a formatter class and a singleton LayoutManager called from the XML view through core:require, a confirmation helper taking a callback, a dialog class resolving a promise, a generic createEntity<T> on a service class — all of it to keep every controller under 100 lines. What it says about arranging a UI5 app holds whatever model sits behind the chat; the tooling around it is of its date, and the post calls UI5's TypeScript support experimental.published 2023-02-27
A ChatGPT-like chat app built with modern SAP technologies (CAP, SAPUI5) – Part 3/3
cds2types. Affects Runnable code.
Display of hierarchical data in SAP Fiori elements using SAP Cloud Application Programming ModelDisplay of hierarchical data in SAP Fiori elements using SAP Cloud Application Programming ModelHierarchies before the framework supported them, and the post now opens with its own update saying that Fiori elements V4 and OData V4 support tree views natively and linking the guide. Read the update first; the rest is the record of what people did in the meantime.OliverKlemenz, published 2022-07-01
Display of hierarchical data in SAP Fiori elements using SAP Cloud Application Programming Model
sap:hierarchy. Affects Runnable code.
Getting started with CAP on PostgreSQL (Node.js)Getting started with CAP on PostgreSQL (Node.js)Running CAP on PostgreSQL locally in 2020, when doing so meant the community packages cds-pg and cds-dbm. It now opens with a banner the author added later: @sap/cds 7.0.0 has native PostgreSQL support, use @cap-js/postgres instead, with a pointer to a step-by-step guide for it. Worth having for that banner as much as for the content — a post that tells you not to follow it is a dated fact about where the answer moved.published 2020-11-16
Getting started with CAP on PostgreSQL (Node.js)
cds-pg. Affects Runnable code.
PostgreSQL persistence adapter for CAP (Node.js)PostgreSQL persistence adapter for CAP (Node.js)The contradiction the adapter was built to resolve, stated plainly in 2020: CAP's core is open, non-intrusive and platform-agnostic, which is what would let it run outside SAP's world — except that HANA was the only officially supported production persistence and HANA exists only inside BTP. cds-pg is the answer to that, and this is the post that argues for it. Read now as the front end of a story whose other end is the 2023 post recording cds-pg's deprecation in favour of @cap-js/postgres.published 2020-08-20
PostgreSQL persistence adapter for CAP (Node.js)
cds-pg is archived. @cap-js/postgres answers the same capability. Affects Runnable code.
Run and Deploy CAP with PostgreSQL on SAP BTP Cloud Foundry (Node.js)Run and Deploy CAP with PostgreSQL on SAP BTP Cloud Foundry (Node.js)The deployment half of the pair, two weeks after the local one, and superseded the same way: it carries the same banner directing readers to @cap-js/postgres and the official documentation. The two together are the community PostgreSQL path as it stood before the core absorbed it.published 2020-11-30
Run and Deploy CAP with PostgreSQL on SAP BTP Cloud Foundry (Node.js)
cds-dbm. Affects Runnable code.
Run and Deploy SAP CAP (Java) with PostgreSQL on SAP BTP Cloud FoundryRun and Deploy SAP CAP (Java) with PostgreSQL on SAP BTP Cloud FoundrySuperseded by its own author: the post now opens with a notice that @sap/cds 7.0.0 brought native PostgreSQL support and that @cap-js/postgres should be used instead of the packages described below. Kept because that notice is the record of when the community adapter stopped being the answer.shanthakumar_krishnaswamy, published 2023-04-04
Run and Deploy SAP CAP (Java) with PostgreSQL on SAP BTP Cloud Foundry
cds-pg. Affects Runnable code.