org.apache.xalan.extensions

## Class XPathFunctionResolverImpl

- java.lang.Object
- - org.apache.xalan.extensions.XPathFunctionResolverImpl

- All Implemented Interfaces:
    XPathFunctionResolver

      public class XPathFunctionResolverImpl
      extends java.lang.Object
      implements XPathFunctionResolver

  A sample implementation of XPathFunctionResolver, with support for EXSLT extension functions and Java extension functions.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `XPathFunctionResolverImpl()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `XPathFunction` | `resolveFunction(QName qname, int arity)` Resolve an extension function from the qualified name and arity.

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### XPathFunctionResolverImpl

          public XPathFunctionResolverImpl()

  - ### Method Detail

    - #### resolveFunction

          public XPathFunction resolveFunction(QName qname,
                                      int arity)

      Resolve an extension function from the qualified name and arity.
      Specified by:
        `resolveFunction` in interface `XPathFunctionResolver`
      Parameters:
        `qname` - The function name.
        `arity` - The number of arguments that the returned function must accept.
      Returns:
        The function or `null` if no function named `functionName` with `arity` arguments exists.

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