| Name | Description | Type | Package | Framework |
| Attribute | Encapsulation of a single XML element attribute in a way that shields the consumer from the data's XML origins. | Class | org.apache.cocoon.components.elementprocessor.types | Apache Cocoon |
| BooleanConverter | This class knows how to convert strings into numbers, and also knows how to check the results against certain criteria | Class | org.apache.cocoon.components.elementprocessor.types | Apache Cocoon |
| BooleanResult | This class holds the result of a boolean conversion. | Class | org.apache.cocoon.components.elementprocessor.types | Apache Cocoon |
| NumericConverter | This class knows how to convert strings into numbers, and also knows how to check the results against certain criteria | Class | org.apache.cocoon.components.elementprocessor.types | Apache Cocoon |
| NumericResult | This class holds the result of a numeric conversion. | Class | org.apache.cocoon.components.elementprocessor.types | Apache Cocoon |
| Validator | This interface allows a client of NumericConverter to apply more restrictive rules to the number that the NumericConverter obtained. | Interface | org.apache.cocoon.components.elementprocessor.types | Apache Cocoon |