| ParameterValidator | This interface represents a validator of a event/task parameter value. |
| BooleanValidator | This implements a validator that checks if the input is a correct boolean value. |
| DefaultValidator | This is a default implementation of ParameterValidator, which simply returns true for each value. |
| FloatValidator | |
| GUIDValidator | |
| IntValidator | This implements a validator that checks if the input is a correct integer value. |
| ParameterValidatorFactory | |
| SimpleStringValidator | |
| ValidationUtils | |
| XMLValidator |