Parameters of the Regex generator

After you add the Regex generator in a field of a Data definition, you can customize the existing configurations of the field.

When you click the Regex generator of a specific field in the Data definition in the edit branch, the unique parameters of the Regex generator that contains the existing configuration details for that field are displayed in the Regex dialog.

The following table provides the list of UI elements of the Regex dialog with their default parameters, and the actions that you can perform in the dialog to customize the parameters for the selected field:


UI element	Description	Default feature	Action
The Generator field	Displays the name of the selected generator, that is, Regex.	The name is not editable.	NA
The Distribution field	Determines if the Regex values are randomly generated in the corresponding column of the test data. Contains the Random option.	The Random option is selected.	Do not perform any action if you want the Regex values, when generated in the test data, to follow a random distribution. Clear the Random option if you want the Regex values to follow a fixed distribution and to be non-random. When you clear the option, the Percentage fields of all the existing configurations become editable. You can set a fixed distribution for the Regex values using the Percentage field. For example, if you set the percentage distribution of `30%` to a configuration that contains Regex values of ten numeric values and `70%` to another configuration that contains Regex values of five alphabets, then the Regex column of the generated data displays the values accordingly. The percentage for each configuration is automatically rebalanced preserving the allocation in the existing configurations, when you add a configuration subsequently.
The Duplicates field	Determines if duplicate or unique Regex values are present in the generated data. Contains the Allowed option.	The Allowed option is selected.	Do not perform any action if you want the generated Regex values to include duplicate entries. Clear the Allowed option if you want to ensure unique Regex values with no duplicates. This will prevent any duplicate Regex values from appearing in the generated data.
The Blank percentage field	Determines the frequency of blank Regex values in the generated data.	Displays `0` and is editable.	Enter a number from `0` to `100`. For example, if you enter `10`, approximately 10% of the Regex values in the generated data will be blank.
The Name field	Displays the custom name of the selected configuration.	Displays `Default` and is editable.	Enter an identifiable name to the selected configuration, if required.
The Percentage field	Determines the proportion of the generated Regex values when you do not select the Random option.	Editable when Random is not selected.	If you did not select the Random option for distribution, enter a number from `0` to `100` in the Percentage field to set the percentage of the Regex values to be generated. For example, if you enter `50`, the generated data will display the column of the Regex values with a 50% occurrence rate.
The Regex field	Determines the custom regular expression pattern to generate data that matches the given pattern.	Displays [a-z]{4}.	Edit the default Regex pattern and enter the desired custom Regex pattern. Perform the following actions to use the helper, if you are not sure of the required Regex format: Click the Helper option. The Regex helper dialog appears. Enter the sample texts in the fields provided, and then click the Create regex option. The Regex format is displayed in the Regex generated field. Click Save to close the dialog and display the Regex value in the Regex field of the generator dialog.
The Add new configuration tab	You can add additional configurations of the Regex values with specific components and settings, if required.	The Name field displays `Configuration-1` and is editable. The Percentage field is editable when the Random option is not selected. The Regex fields display the same values that were provided in the previous configuration.	Click the tab and then add the required components for the additional configuration. For example, you can have one configuration that contains ten numerals, and another configuration that contains five alphabets. You can similarly customize the values, distribution, and percentage as required. You can click the delete icon to delete any additional configuration that you do not need.
The Save to catalog option	After the customization of the Regex generator is complete, you can use the Regex generator as the base generator to create a new custom generator.	NA	Click the Save to catalog icon . You can reuse the same configuration at a later time in different scenarios without having to set it up again from the scratch. See Creating custom generators and categories from Data definitions.
The preview icon	The preview icon is available for each configuration of a generator.	NA	Click the preview icon to view the sample test data for the selected configuration of a generator.
The close icon	NA	NA	Click the icon to exit the Regex generator dialog.

Note: The total percentage displayed in the Percentage fields of all the configurations in the Regex generator should be equal to 100.