abap2UI5/README.md

abap2UI5

Development of UI5 Apps in pure ABAP. Follow this project on twitter to keep up to date!

Project Features

• easy to use – implement just one interface for a standalone UI5 application
• pure ABAP – development in 100% ABAP source code (no JavaScript, DDL, EML or Customizing)
• low system footprint - based on a plain http handler (no BSP, OData, CDS, BOPF, FE or RAP)
• cloud and on-premise ready – works with both language versions (ABAP for Cloud, Standard ABAP)
• high system compatibility – runs on all available ABAP stacks (NW 7.02 to ABAP 2302)
• easy installation – abapGit project, no additional app deployment needed

Information

SCN Blog Series - Introduction to abap2UI5

• (1/4) Development of UI5 Apps in pure ABAP (Blog SCN - 22.02.2023)
  
• (2/4) Output of Tables & Selection-Screens (Blog SCN - 23.02.2023)
  
• (3/4) Flow Logic, Pop-ups & F4-Help
  
• (3/4) Demos, Use-Cases & Compatibility
  

More

• Find abap2UI5 in the ABAP Open Source Projects (dotabap.org)
• Static Analysis & Continuous Integration with abaplint (abaplint.app/abap2UI5)
• Featured in the Boring Enterprise Nerdletter (newsletter - 08.03.2023)
• Featured in the SAP Developer News (youtube - 26.01.2023)
• Development of UI5 Selection-Screens in pure ABAP (former version) (Blog SCN - 22.01.2023)

Demo (Example)

Installation

Works with all available ABAP stacks and language versions:

• 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 low syntax branch

Install with abapGit, create a new HTTP service and call abap2UI5 (more information):

ABAP for Cloud:

METHOD if_http_service_extension~handle_request.

   z2ui5_cl_http_handler=>client = VALUE #(
      t_header = request->get_header_fields( )
      t_param  = request->get_form_fields( )
      body     = request->get_text( ) ).

   DATA(lv_resp) = SWITCH #( request->get_method( )
      WHEN 'GET'  THEN z2ui5_cl_http_handler=>main_index_html( )
      WHEN 'POST' THEN z2ui5_cl_http_handler=>main_roundtrip( ) ).

   response->set_status( 200 )->set_text( lv_resp ).

ENDMETHOD.

Standard ABAP:

METHOD if_http_extension~handle_request.

   DATA lt_header TYPE tihttpnvp.
   server->request->get_header_fields( CHANGING fields = lt_header ).

   DATA lt_param TYPE tihttpnvp.
   server->request->get_form_fields( CHANGING fields = lt_param ).

   z2ui5_cl_http_handler=>client = VALUE #(
      t_header = lt_header
      t_param  = lt_param
      body     = server->request->get_cdata( ) ).

   DATA(lv_resp) = SWITCH #( server->request->get_method( )
      WHEN 'GET'  THEN z2ui5_cl_http_handler=>main_index_html( )
      WHEN 'POST' THEN z2ui5_cl_http_handler=>main_roundtrip( ) ).

   server->response->set_cdata( lv_resp ).
   server->response->set_status( code = 200 reason = 'success' ).

ENDMETHOD.

FAQ

• read these instructions when you develop your first app
  
• running into problems with your app? see debugging & troubleshooting
• setup the theme, bootstrapping, title... - take a look to the wiki
• as always - your comments, questions, wishes and bugs are welcome, please create an issue