Class SystemFunctionWithBoundContextItem

  • All Implemented Interfaces:
    Callable, Function, GroundedValue, Item, Sequence

    public class SystemFunctionWithBoundContextItem
    extends AbstractFunction
    A Callable that wraps another Callable and a Dynamic Context, in effect acting as a closure that executes the original callable with a saved context.
    • Constructor Detail

    • Method Detail

      • call

        public Sequence 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
      • getArity

        public int getArity()
        Get the arity of the function
        Returns:
        the number of arguments in the function signature
      • getFunctionItemType

        public FunctionItemType getFunctionItemType()
        Get the item type of the function item
        Returns:
        the function item's type
      • getFunctionName

        public StructuredQName getFunctionName()
        Get the name of the function, or null if it is anonymous
        Returns:
        the function name, or null for an anonymous inline function
      • getDescription

        public java.lang.String getDescription()
        Get a description of this function for use in error messages. For named functions, the description is the function name (as a lexical QName). For others, it might be, for example, "inline function", or "partially-applied ends-with function".
        Returns:
        a description of the function for use in error messages