Detecting and handling changes to back-end systems

A method being implemented by a computer and comprising:

• receiving, by a processor of the computer, configuration data for a pattern, the pattern including a predefined arrangement of user interface elements and specifying predefined actions that can be performed using the user interface elements, the configuration data comprising a first version identification and specifying an association between one of the user interface elements and an entity defined in a hardware back-end system;
• receiving selection of one of the user interface elements from a user;
• generating, based on the selection, an application program by using the pattern, the configuration data being used to associate the application with the entity in the back-end system, wherein the application program is configured to perform a predefined action corresponding to the selected user interface element;
• determining whether the back-end system is available for access by the application program;
• retrieving, based on an access request by the application program, a second version identification from the back-end system when the back-end system is determined to be available, wherein the first and second version identification correspond to a version of the entity and the access request is redirected to another back-end system when the back-end system is not available;
• comparing the first version identification and the second version identification, the comparison being performed when the application program accesses the entity in the back-end system;
• generating a notification indicating that the first version identification does not match the second version identification, the notification including a selectable option, wherein the generated application program continues to perform the predefined action when the comparison indicates that the first version identification does not match the second version identification;
• receiving an authorization in response to selection of the selectable option by a user;
• and
• modifying, in response to the authorization, the configuration data corresponding to the application program, based on information stored in the back-end system, the modification including different types of modifications, wherein a type of the modification of the configuration data is determined based on the stored information.

A memory device comprising a pattern component causing data processing apparatus to:

• receive configuration data for a pattern, the pattern including a predefined arrangement of user interface elements and specifying predefined actions that can be performed using the user interface elements, the configuration data comprising a first version identification and specifying an association between one of the user interface elements and an entity defined in a back-end system;
• receive selection of the one of user interface elements from a user;
• generate, based on the selection, an application program by using the pattern, the configuration data being used to associate the application with the entity in the back-end system, wherein the application program is configured to perform a predefined action corresponding to the selected user interface element;
• determine whether the back-end system is available for access by the application program;
• retrieve, based on an access request by the application program, a second version identification from the back-end system when the back-end system is determined to be available, wherein the first and second version identification correspond to a version of the entity and the access request is redirected to another back-end system when the back-end system is not available;
• compare the first version identification and the second version identification, the comparison being performed when the application program accesses the entity in the back-end system;
• generate a notification indicating that the first version identification does not match the second version identification, the notification including a selectable option, wherein the generated application program continues to perform the predefined action when the comparison indicates that the first version identification does not match the second version identification;
• receive an authorization in response to selection of the selectable option by a user;
• and
• modify, in response to the authorization, the configuration data corresponding to the application program, based on information stored in the back-end system, the modification including different types of modifications, wherein a type of the modification of the configuration data is determined based on the stored information.