HOnError (Example)

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Example: Customizing the errors

HOnError (Example)

See the associated help page

Example: Customizing the errors

The following example is used to customize the management of errors with two procedures:

OnLockError() that is used to customize the lock errors
OnOtherError() that is used to customize all the other types of errors

//------ Procedure to call when a lock error occurs
PROCEDURE OnLockError()

IF YesNo( "A lock error occurred" + CR + ...
"Do you want to retry?") = True THEN
// Retry the operation that failed
RESULT opRetry
END
// Give control back to the user
RESULT opEndProcess

//------- Procedure to call for errors other than lock errors
PROCEDURE OnOtherError()

SWITCH HError(hErrCurrent)
CASE 70015// Integrity error
// Process specific to the integrity errors
// for example, display the error with Error(HErrorInfo())
// end the current process
...
// Give control back to the user
RESULT opEndProcess

CASE 70100 // Lock error
// Process specific to the lock errors
// for example, display the error with Error(HErrorInfo())
// end the current process
...
// Give control back to the user
RESULT opEndProcess

CASE 70010// Duplicate error
// Process specific to the duplicate error
// for example, display the error with Error(HErrorInfo())
// end the current process
...
// Give control back to the user
RESULT opEndProcess

CASE 70700// Error of modification conflict
// Process specific to the errors of modification conflict
// for example, display the error with Error(HErrorInfo())
// end the current process
...
// Give control back to the user
RESULT opEndProcess

CASE 70710// 'Mandatory Value' error
// Process specific to the errors of mandatory value
// for example, display the error with Error(HErrorInfo())
// end the current process
...
// Give control back to the user
RESULT opEndProcess

CASE 70720// 'Indexing in progress' error
// Process specific to the 'indexing in progress' errors
// for example, display the error with Error(HErrorInfo())
// end the current process
...
// Give control back to the user
RESULT opEndProcess

CASE 70022// Password error
// Process specific to the password errors
// for example, display the error with Error(HErrorInfo())
// or reset the password for the relevant file
// with HPass(HErrorInfo(hErrFile), NewPassword)
// end the current process
...
// Give control back to the user
RESULT opEndProcess
END

//------- Customize the errors (in the initialization code of the project for example)

HOnError("*", hErrLock, "OnLockError")
HOnError("*", hErrIntegrity + hErrDuplicates + ...
hErrModify + hErrPassword, "OnOtherError")

//------- Add a record
// no need to check the return because if an error occurs,
// the addition will be retried or the process will be canceled
HAdd(CUSTOMER)