abap2UI5/README.md

Key Features

• Easy to use – implement just one interface for a standalone UI5 application
• Pure ABAP – development using 100% ABAP (no JavaScript, DDL, EML or Customizing)
• Low system footprint – based on a plain HTTP handler (no BSP, OData, CDS, BOPF or RAP)
• Cloud and on-premise ready – works with both language versions (ABAP for Cloud, Standard ABAP)
• High system compatibility – runs on all ABAP releases (from NW 7.02 to ABAP 2311)
• Easy installation – abapGit project, no additional app deployment needed

Compatibility

• BTP ABAP Environment (ABAP for Cloud)
• S/4 Public Cloud ABAP Environment (ABAP for Cloud)
• S/4 Private Cloud or On-Premise (ABAP for Cloud, Standard ABAP)
• R/3 NetWeaver AS ABAP 7.50 or higher (Standard ABAP)
• R/3 NetWeaver AS ABAP 7.02 to 7.42 - use the downport repository

Information (Blog Series)

1. Introduction: Developing UI5 Apps in Pure ABAP (Blog SCN - 22.02.2023)
   
2. Displaying Selection Screens & Tables (Blog SCN - 23.02.2023)
   
3. Popups, F4-Help, Messages & Controller Logic (Blog SCN - 30.03.2023)
   
4. Advanced Functionality & Demonstrations (Blog SCN - 02.04.2023)
   
5. Extensions with XML Views, HTML, JS & CC (Blog SCN - 12.04.2023)
   
6. Installation, Configuration & Debugging (Blog SCN - 14.04.2023)
   
7. Technical Background: Under the Hood of abap2UI5 (Blog SCN - 26.04.2023)
   
8. Repository Setup with abapGit, abaplint & open-abap (Blog SCN - 21.08.2023)
   
9. Community Feedback & New Features I (Blog SCN - 11.09.2023)
   

References

• Find abap2UI5 in the ABAP Open Source Projects (dotabap.org)
• Featured in the SAP Developer News (youtube - 26.01.2023)
• Featured in the Boring Enterprise Nerdletter (newsletter - 08.03.2023)
• Part of the SAP Developer Code Challenge (community - 17.05.2023)

Apps & Extensions

• Add your apps to SAP Fiori On-Premise Launchpad (ext-fiori_launchpad)
• Integrate your apps with the SAP Business Technology Platform (ext-btp)
• Explore abap2UI5-tools, a collection of tools & utility functions (abap2UI5-tools)
• Add more functions with Custom Controls & External Libraries (custom controls)
• Discover other projects using abap2UI5 (abap2UI5/links)

More

• Try out abap2UI5 compiled to JS on open-abap under Node.js (abap2UI5-web)
• Install S-RTTI to create apps with dynamically typed tables (github/s-rtti)
• Import & Export Excel files in pure ABAP with abap2xslt (twitter/xslt)
• Analyse your Views & Models with this Codesandbox (abap2UI5-debug-tools)
• And finally, don't forget to explore the Samples Repository 🧭

Installation

Install with abapGit and create a new HTTP service with the following handler:

Standard ABAP 🏠

METHOD if_http_extension~handle_request.

   DATA(lv_resp) = SWITCH #( server->request->get_method( )
      WHEN 'GET'  THEN z2ui5_cl_fw_http_handler=>http_get( )
      WHEN 'POST' THEN z2ui5_cl_fw_http_handler=>http_post( server->request->get_cdata( ) ) ).

   server->response->set_header_field( name = `cache-control` value = `no-cache` ).
   server->response->set_cdata( lv_resp ).
   server->response->set_status( code = 200 reason = `success` ).

ENDMETHOD.

ABAP for Cloud ☁️

METHOD if_http_service_extension~handle_request.

   DATA(lv_resp) = SWITCH #( request->get_method( )
      WHEN 'GET'  THEN z2ui5_cl_fw_http_handler=>http_get( )
      WHEN 'POST' THEN z2ui5_cl_fw_http_handler=>http_post( request->get_text( ) ) ).

   response->set_header_field( i_name = `cache-control` i_value = `no-cache` ).
   response->set_text( lv_resp ).
   response->set_status( 200 ).

ENDMETHOD.

Usage

Develop UI5 Apps by implementing the abap2UI5 interface:

CLASS z2ui5_cl_app_hello_world DEFINITION PUBLIC.

  PUBLIC SECTION.
    INTERFACES z2ui5_if_app.
    DATA product  TYPE string.
    DATA quantity TYPE string.

ENDCLASS.

CLASS z2ui5_cl_app_hello_world IMPLEMENTATION.

  METHOD z2ui5_if_app~main.

    CASE client->get( )-event.
      WHEN 'BUTTON_POST'.
        client->message_toast_display( |{ product } { quantity } - send to the server| ).
    ENDCASE.

    client->view_display( z2ui5_cl_xml_view=>factory( client
      )->page( 'abap2UI5 - Hello World App'
         )->simple_form( )->content( ns = `form`
            )->title( 'Input here and send it to the server...'
            )->label( 'quantity'
            )->input( client->_bind_edit( quantity )
            )->label( 'product'
            )->input( client->_bind_edit( product )
            )->button( text = 'post' press = client->_event( 'BUTTON_POST' )
      )->stringify( ) ).

  ENDMETHOD.
ENDCLASS.

FAQ

• Check out the documentation for installation & configuration guidelines
• Still have open questions? find an answer in the FAQ
• Want to help out? Check out the contribution guidelines
• As always - your comments, questions, wishes and bug reports are welcome, please create an issue