| Name | Description | Type | Package | Framework |
| AppData | A class for holding application data structures. | Class | org.apache.turbine.services.intake.xmlmodel | Apache Turbine |
| Rule | A Class for holding data about a constraint on a property. | Class | org.apache.turbine.services.intake.xmlmodel | Apache Turbine |
| XmlField | A Class for holding data about a property used in an Application. | Class | org.apache.turbine.services.intake.xmlmodel | Apache Turbine |
| XmlGroup | A Class for holding data about a grouping of inputs used in an Application. | Class | org.apache.turbine.services.intake.xmlmodel | Apache Turbine |