## com.icl.saxon.expr
Class StyleSheetFunctionCall

    java.lang.Object
      com.icl.saxon.expr.Expression
          com.icl.saxon.expr.Function
              com.icl.saxon.expr.StyleSheetFunctionCall

public class StyleSheetFunctionCall
extends Function

This class represents a call to a function defined in the stylesheet

Field Summary

Fields inherited from class com.icl.saxon.expr.Function
`argument`

Fields inherited from class com.icl.saxon.expr.Expression
`staticContext`

Constructor Summary
`StyleSheetFunctionCall()`

Method Summary
`Value` `evaluate(Context c)` Evaluate the function
`int` `getDataType()` Determine the data type of the expression, if possible
`int` `getDependencies()` Determine which aspects of the context the expression depends on.
`java.lang.String` `getName()` Get the name of the function.
`Expression` `reduce(int dependencies, Context context)` Remove dependencies.
`void` `setFunction(SAXONFunction f)` Create the reference to the saxon:function element
`Expression` `simplify()` Simplify the function call

Methods inherited from class com.icl.saxon.expr.Function
`addArgument, checkArgumentCount, display, getNumberOfArguments`

Methods inherited from class com.icl.saxon.expr.Expression
`containsReferences, enumerate, evaluateAsBoolean, evaluateAsNodeSet, evaluateAsNumber, evaluateAsString, getStaticContext, indent, isContextDocumentNodeSet, make, outputStringValue, setStaticContext, usesCurrent`

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

Constructor Detail

### StyleSheetFunctionCall

    public StyleSheetFunctionCall()

Method Detail

### setFunction

    public void setFunction(SAXONFunction f)

  Create the reference to the saxon:function element

### getName

    public java.lang.String getName()

  Get the name of the function.

  Specified by:
    `getName` in class `Function`
  Returns:
    the name of the function, as used in XSL expressions, but excluding its namespace prefix

### getDataType

    public int getDataType()

  Determine the data type of the expression, if possible

  Specified by:
    `getDataType` in class `Expression`
  Returns:
    Value.ANY (meaning not known in advance)

### simplify

    public Expression simplify()
                        throws XPathException

  Simplify the function call

  Overrides:
    `simplify` in class `Expression`
  Returns:
    the simplified expression
  Throws:
    `XPathException`

### getDependencies

    public int getDependencies()

  Determine which aspects of the context the expression depends on. The result is a bitwise-or'ed value composed from constants such as Context.VARIABLES and Context.CURRENT_NODE

  Specified by:
    `getDependencies` in class `Expression`

### reduce

    public Expression reduce(int dependencies,
                             Context context)
                      throws XPathException

  Remove dependencies.

  Specified by:
    `reduce` in class `Expression`
  Parameters:
    `dependencies` - The dependencies to be removed, e.g. Context.VARIABLES
    `context` - The context to be used for the partial evaluation
  Returns:
    a new expression (or Value) that does not have any of the specified dependencies
  Throws:
    `XPathException`

### evaluate

    public Value evaluate(Context c)
                   throws XPathException

  Evaluate the function

  Specified by:
    `evaluate` in class `Expression`
  Parameters:
    `c` - The context in which the expression is to be evaluated
  Returns:
    a Value representing the result of the function. This must be of the data type corresponding to the result of getType().
  Throws:
    `XPathException` - if the function cannot be evaluated.