XPathHandler (PMD Core 7.16.0 API)

```
public interface XPathHandler
```
Interface for performing Language specific XPath handling, such as initialization and navigation.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default XPathHandler`	`combine(XPathHandler other)`	Return a new XPath handler combining all available functions from this and another handler.
`static XPathHandler`	`getHandlerForFunctionDefs(XPathFunctionDefinition first, XPathFunctionDefinition... defs)`	Returns a default XPath handler.
`Set<XPathFunctionDefinition>`	`getRegisteredExtensionFunctions()`	Returns the set of extension functions for this language module.
`static XPathHandler`	`noFunctionDefinitions()`

- Method Detail
  - getRegisteredExtensionFunctions
```
Set<XPathFunctionDefinition> getRegisteredExtensionFunctions()
```
    Returns the set of extension functions for this language module. These are the additional functions available in XPath queries.
  - noFunctionDefinitions
```
static XPathHandler noFunctionDefinitions()
```
  - getHandlerForFunctionDefs
```
static XPathHandler getHandlerForFunctionDefs(XPathFunctionDefinition first,
                                              XPathFunctionDefinition... defs)
```
    Returns a default XPath handler.
  - combine
```
default XPathHandler combine(XPathHandler other)
```
    Return a new XPath handler combining all available functions from this and another handler.
    
    Parameters:
    
    other - The handler whose functions to merge with this one.
    
    Returns:
    
    A new handler exposing all functions from both XPath handlers.
    
    Since:
    
    7.13.0