Managing Execution Errors

This topic provides you with information concerning the way you can manage errors in Know-how Apps Components.

This page discusses:

See Also
Testing the Process

Introduction

The management of execution errors aims at:

  • Enabling expert and end users to better understand the errors that may occur when operating an operation. There are five different errors:

    • Input Errors made by the expert user when creating an operation: One of the inputs of an operation was incorrectly defined.
    • Errors made by the end user when using the operation: The end user runs a main operation requiring an object not yet created.
    • Warnings: Errors made by the end user when using the operation: The user cancels the execution of the operation.

  • Enabling expert and end users to fix the problem.

    • Expert user: Whatever the operation (main or building blocks of a operation), he can determine which operation is concerned and can edit or deactivate it.
    • End user: He can only delete or deactivate the main operations (or the visible operations.)

  • Enabling expert and end users to identify the operations in error in the tree.

  • Keeping track of the information for the expert user to fix the problems.

Detecting Errors

The operations that are in error display with a in the tree. When an error occurs when executing the application, the following error appears: The Query dialog box was canceled during execution.

  • The Operation column lists the operations that are in error.

  • The Diagnosis column describes the reason why the operation cannot be executed (An object variable cannot be valuated).

  • The Documentation field helps the user fix the problem. He can edit the operation and modify its inputs before launching its execution, or he can deactivate the operation.

The information about each error is saved at the level of each feature and can therefore be displayed by editing the operation.