DTDReader (Apache Axiom)

```
public interface DTDReader
```
Optional interface implemented by XMLStreamReader implementations that provide additional data about XMLStreamConstants.DTD events.
All the requirements outlined in org.apache.axiom.ext.stax apply to this extension interface. In particular, to get a reference to the extension, the consumer MUST call XMLStreamReader.getProperty(String) with PROPERTY as the property name.

Field Summary

Fields
Modifier and Type Field Description

static String PROPERTY
The name of the property used to look up this extension interface from a XMLStreamReader implementation.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`String`	`getPublicId()`	Get the public ID of the external subset.
`String`	`getRootName()`	Get the root name of the DTD, i.e. the name immediately following the `DOCTYPE` keyword.
`String`	`getSystemId()`	Get the system ID of the external subset.

- Field Detail
  - PROPERTY
```
static final String PROPERTY
```
    The name of the property used to look up this extension interface from a XMLStreamReader implementation.
- Method Detail
  - getRootName
```
String getRootName()
```
    Get the root name of the DTD, i.e. the name immediately following the DOCTYPE keyword.
    
    Returns:
    
    the root name; must not be null
    
    Throws:
    
    IllegalStateException - if the current event is not XMLStreamConstants.DTD
  - getPublicId
```
String getPublicId()
```
    Get the public ID of the external subset.
    
    Returns:
    
    the public ID, or null if there is no external subset or no public ID has been specified for the external subset
    
    Throws:
    
    IllegalStateException - if the current event is not XMLStreamConstants.DTD
  - getSystemId
```
String getSystemId()
```
    Get the system ID of the external subset.
    
    Returns:
    
    the system ID, or null if there is no external subset
    
    Throws:
    
    IllegalStateException - if the current event is not XMLStreamConstants.DTD