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## com.caucho.xpath
Class XPathFun

    java.lang.Object
      |
      +--com.caucho.xpath.XPathFun

Direct Known Subclasses:
  FormatNumberFun, KeyFun

public abstract class XPathFun
extends java.lang.Object

Base class for XPath functions. The custom functions can use the Expr.toBoolean, etc. functions to convert to normal Java types.

Constructor Summary
`XPathFun()`

Method Summary
`abstract java.lang.Object` | `eval(Node node, Env env, Node context, Pattern pattern, java.util.ArrayList args)` Evaluate the function.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### XPathFun

    public XPathFun()

Method Detail

### eval

    public abstract java.lang.Object eval(Node node,
                                          Env env,
                                          Node context,
                                          Pattern pattern,
                                          java.util.ArrayList args)

  Evaluate the function.
  Parameters:
    `pattern` - The context pattern.
    `args` - The evaluated arguments

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