Package net.sf.saxon.functions

Class ElementAvailable

java.lang.Object
net.sf.saxon.functions.AbstractFunction
net.sf.saxon.functions.SystemFunction
net.sf.saxon.functions.ElementAvailable
All Implemented Interfaces:
Callable, FunctionItem, GroundedValue, Item, Sequence
public class ElementAvailable extends SystemFunction
This class supports the XSLT element-available function. Note that when running in a 2.0 processor, it only looks for XSLT 2.0 instructions; but when running in a 3.0 processor, it recognizes all elements in the XSLT namespace whether or not they are classified as instructions.

  • Constructor Details

    • ElementAvailable

      public ElementAvailable()

  • Method Details

    • isXslt30Element

      public static boolean isXslt30Element(int fp)

    • isXslt40Element

      public static boolean isXslt40Element(int fp)

    • getSpecialProperties

      public int getSpecialProperties(Expression[] arguments)
      Special-case for element-available('xsl:evaluate') which may be dynamically-disabled, and the spec says that this should be assessed at run-time. By indicating that the effect of the function depends on the run-time environment, early evaluation at compile time is suppressed.
      Overrides:
      getSpecialProperties in class SystemFunction
      Parameters:
      arguments - the actual arguments supplied in a call to the function
      Returns:
      the properties

    • call

      public BooleanValue call(XPathContext context, Sequence[] arguments) throws XPathException
      Evaluate the expression
      Parameters:
      context - the dynamic evaluation context
      arguments - the values of the arguments, supplied as SequenceIterators
      Returns:
      the result of the evaluation, in the form of a SequenceIterator
      Throws:
      XPathException - if a dynamic error occurs during the evaluation of the expression