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RegEx Validation

The RegEx Validation (short for Regular Expression Validation) option allows you to examine data in a source column and check whether it matches a specific format, thus affirming that the data is indeed valid.

 

For example, if you are checking whether the number listed in a phone number column can actually be used to dial a phone, you can use the RegEx Validation procedure to compare the content of the phone number column with an expression that is valid for phone numbers. In the destination column, you can place the result – whether the comparison shows that the phone number is valid, or not.

 

In the example below, we will use the following regular expression: ^[0-5]\d{2}-\d{3}-\d{4}$. This expression matches a hyphen separated phone number, of the form ANN-NNN-NNNN, where A is between 0 and 5 and N is between 0 and 9.

 

The result would be as follows:

 

Source Column Target Column

054-20000336

Valid

654-20000336

Invalid

 

To configure this manipulate step, follow the instructions below:

 

  1. In the Admin Navigation tree, select Interfaces > InterfaceName > Tasks > TaskName > Steps.
  2. On the toolbar, click New >New Manipulate Step.

Creating a New Manipulate Step

  1. Navigate to the Validation section and select RegEx Validation.

Validation Section

  1. In the RegEx Validation work area, fill in the following fields:

Fields Configuration

The following table describes the fields available for this step:

 

Fields Description

Name

Provide a distinctive name for this step.

Is Active

Select the check box to engage the scheduler for this step.

Order of Execution

Enter the order in which this step should be executed.

Filter Expression

Optional. Use this filed to filter data from the source database prior to inserting it into the Schema table.

Sort Expression

Optional. Use this field to sort data from the source database prior to inserting it into the Schema table.

Stop interface execution if query failed

Optional. If enabled, the system will stop any data manipulation if the query returns an error.

Save Schema (enabled per interface)

If selected, the schema is created for this step.

Column to validate

Select the data source to validate.

Target Column

Select the column where the results of the comparison will be placed.

Expression

Enter an appropriate regular expression.

Valid Text

The marker that is used to indicate that the data is valid.

Not Valid Text

The marker that is used to indicate that the data is invalid.

 

  1. Click the Save button.