Taxonomy validation is applicable for all the objects that extend Validatable class. All the private member (excluding static) fields are validated using taxonomy validation.

The member fields of the class which also extends the Validatable class will be validated recursively. If there is a List of the fields, all the values will be validated in loop.

The detailed validation process is as follows:

1. The taxonomy validation flow will be called as part of the traditional <DTO_Object>.validate method call in the service class.
2. The taxonomy validation should be applied or not for the respective DTO object is configured in preferences (Explained in ‘Configurations’ section)
3. All the classes in ‘xface’ and ‘appcore/dto’ package which extends Validatable class will have their corresponding validator class loaded in the system in the same package. The validator class name would be <DTO_NAME>Validator.java.

   Note:

   These validator classes need not be written by developers. These files will be generated at build time and loaded in corresponding ear files.
4. All the member fields of the validatable object class will be validated against the corresponding taxonomy data loaded.
5. If the validation fails for a particular field the corresponding error will be added to validation error list. All the validation criteria will be applied to the field at once and all the possible errors codes will collated together.
6. The ValidationError object will contain error code, error message, the fully qualified name of the parent request DTO on which validate method is called and the fieldkey. The fieldkey is the name of the field with its hierarchy w.r.t parent class.
7. If there is no validation data maintained for the field at class level or field level, an exception will be raised.
8. The rest process of service execution will remain same.