| Interface | Description | 
|---|---|
| DatatypeValidator | The interface that a DTD datatype must implement. | 
| ValidationContext | ValidationContext has all the information required for the
 validation of: id, idref, entity, notation, qname | 
| XSSimpleType | This interface  XSSimpleTyperepresents the simple type
 definition of schema component and defines methods to query the information
 contained. | 
| Class | Description | 
|---|---|
| DTDDVFactory | The factory to create and return DTD types. | 
| SchemaDVFactory | Defines a factory API that enables applications to | 
| ValidatedInfo | Class to get the information back after content is validated. | 
| XSFacets | The class used to pass all facets to  XSSimpleType.applyFacets(org.apache.xerces.impl.dv.XSFacets, int, int, org.apache.xerces.impl.dv.ValidationContext). | 
| Exception | Description | 
|---|---|
| DatatypeException | Base class for datatype exceptions. | 
| DVFactoryException | A runtime exception that's thrown if an error happens when the application
 tries to get a DV factory instance. | 
| InvalidDatatypeFacetException | Datatype exception for invalid facet. | 
| InvalidDatatypeValueException | Datatype exception for invalid values. | 
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