dw-validation-utils: 12 DataWeave validation functions, sandbox-verified reference

The dw-validation-utils library provides 12 DataWeave validation functions, which have been verified and can be safely used in a sandbox environment. These functions assist in field validation, pattern matching, and bulk payload validation.

The functions cover various aspects of data validation, including checking if a value is required, verifying the format of an email address, ensuring a string's length meets minimum and maximum requirements, checking if a value falls within a specified range, validating the format of a string against a regular expression, confirming whether a date is in the correct format, determining if a value is one of several allowed options, validating if a string is a UUID, verifying if a string is a URL, and checking if a string is a phone number in E.164 format.

To use these functions, developers should import the ValidationUtils module at the beginning of their DataWeave scripts. They can then call the desired function and pass the necessary arguments, such as the payload field they wish to validate, along with any required parameters like field names, minimum and maximum lengths, and regular expression patterns.

The library returns an object containing information about the validation result. This object includes a boolean value indicating whether the validation passed, the specific field that caused an error, and a message describing the error. Developers can parse this returned object to determine if the validation was successful and branch their logic accordingly.

By utilizing these functions, developers can ensure that their data meets the required formats and meets predefined constraints before processing, which helps maintain the integrity and reliability of their applications.