Frontend - backend communication decision based on business object metadata

A method comprising:

• providing a user interface from a runtime user interface (UI) application running on a frontend server to a client application;
• receiving, by the runtime UI application from a business application running on a backend server, a business object that includes metadata associated with the user interface;
• receiving, by the runtime UI application from the client application, user input associated with a business transaction, the user input including an input of a first field for the user interface;
• determining, by the runtime UI application based on the business object, whether processing by the business application of the first field input is required to determine and output to the client application an updated second field of the user interface before completion of the business transaction;
• and
• triggering a round-trip communication between the runtime UI application and the business application to process the first field and determine the updated second field before completion of the business transaction if the processing is required by the business application to determine and output the updated second field before completion of the business transaction.

An apparatus comprising:

• providing logic configured to provide a user interface from a runtime user interface (UI) application running on a frontend server to a client application;
• receiving logic configured to receive, by the runtime UI application from a business application running on a backend server, a business object that includes metadata associated with the user interface;
• the receiving logic further configured to receive, by the runtime UI application from the client application, user input associated with a business transaction, the user input including an input of a first field for the user interface;
• determining logic configured to determine, by the runtime UI application based on the business object, whether processing by the business application of the first field input is required to determine and output to the client application an updated second field of the user interface before completion of the business transaction;
• and
• triggering logic configured to trigger a round-trip communication between the runtime UI application and the business application to process the first field and determine the updated second field before completion of the business transaction if the processing is required by the business application to determine and output the updated second field before completion of the business transaction.