Table of Contents

HALT/WARN ON CONDITION

Category: Workflow / Internal


Description

This action can either abort project execution or display a warning and continue if the specified condition is not fulfilled.


Use cases


Action settings

SettingDescription
ModeOptions: Halt or Warn and continue. See the tables below for details.


Halt mode options

Halt mode Description
Halt if table is emptyThis option stops the action chain and displays an error if the dataset is empty at the point of the Halt action.
Used in cases where the dataset is expected to have data at the time of the Halt action.
Halt if table is NOT emptyThis option stops the action chain and displays an error if the dataset is NOT empty at the point of the Halt action. Used in cases where the dataset is expected to NOT have data at the time of the Halt action.
Halt if the condition is true for EVERY rowThe option stops the action chain if the entered condition evaluates to TRUE for every row in the dataset at the time of the Halt action.
Halt if the condition is true for ANY rowThe option stops the action chain if the entered condition evaluates to TRUE for any row in the dataset at the time of the Halt action.
Error message*(Optional) Enter custom text that will appear in the error message if an error occurs.

* Setting can be specified using a parameter or the first value of a column.


Warn and continue mode options

Warn mode Description
Warn if table is emptyThis option displays a warning and continues if the dataset is empty at the point of the Warn action.
Used in cases where the dataset is expected to have data at the time of the Warn action.
Warn if table is NOT emptyThis option displays a warning and continues if the dataset is NOT empty at the point of the Warn action. Used in cases where the dataset is expected to NOT have data at the time of the Warn action.
Warn if the condition is true for EVERY rowThe option displays a warning and continues if the entered condition evaluates to TRUE for every row in the dataset at the time of the Warn action.
Warn if the condition is true for ANY rowThe option displays a warning and continues if the entered condition evaluates to TRUE for any row in the dataset at the time of the Warn action.
Warning message*(Optional) Enter custom text that will appear in the warning message if an error occurs.

* Setting can be specified using a parameter or the first value of a column.


For either of the "condition" options (true for ANY row, true for EVERY row), select how EasyMorph will react if the condition refers to a field, but the table has no rows (e.g. data) at the time of the Halt/Warn action. Options (Halt mode): Halt anyway or Do NOT halt. Options (Warn mode): Warn anyway or Do NOT warn.


Remarks

The condition must return either TRUE or FALSE for each row. If for some reason it returns an error then the action will also fail.

If the condition is global (i.e. doesn't refer to any field) then it's still evaluated even if the dataset is empty.

The error message can be customized to provide more insight into the cause of the interruption. If custom message text is not supplied, generic error language will be used, relative to the Mode selected.


Examples

Example: Let's assume we expect amounts to be numbers in all rows. If any values are NOT numeric, we want the action chain to stop. If the dataset is empty at this point, we want the action chain to continue - empty datasets will be handled downstream.

Source table:

Province Amount Total Tax
ON 1000 125
BC #N/A 187.5
QC 2000 270


Action parameters (Halt mode):

Halt mode is "Halt if the condition is true for ANY row"
The condition is "not isnumber([Amount])"
Choose "Do NOT halt" if the dataset has no rows

This will make the action stop project execution because one of the values in column "Amount" is not a number. If the entire dataset is empty, however, the project will continue.


Action parameters (Warn and continue mode):

Warn mode is "Warn if the condition is true for ANY row"
The condition is "not isnumber([Amount])"
Choose "Do NOT warn" if the dataset has no rows

The action will display a warning and continue project execution because one of the values in column "Amount" is not a number. If the entire dataset is empty, however, the project will continue without a warning.


Community examples


See also