Class UnresolvedXQueryFunctionItem

    • Method Detail

      • getFunctionItemType

        public FunctionItemType getFunctionItemType()
        Description copied from interface: FunctionItem
        Get the item type of the function item
        Returns:
        the function item's type
      • getFunctionName

        public StructuredQName getFunctionName()
        Description copied from interface: FunctionItem
        Get the name of the function, or null if it is anonymous
        Returns:
        the function name, or null for an anonymous inline function
      • getArity

        public int getArity()
        Description copied from interface: FunctionItem
        Get the arity of the function
        Returns:
        the number of arguments in the function signature
      • call

        public Sequence call​(XPathContext context,
                             Sequence[] args)
                      throws XPathException
        Description copied from interface: Callable
        Call the Callable.
        Parameters:
        context - the dynamic evaluation context
        args - the values of the arguments, supplied as Sequences.

        Generally it is advisable, if calling iterate() to process a supplied sequence, to call it only once; if the value is required more than once, it should first be converted to a GroundedValue by calling the utility method SequenceTool.toGroundedValue().

        If the expected value is a single item, the item should be obtained by calling Sequence.head(): it cannot be assumed that the item will be passed as an instance of Item or AtomicValue.

        It is the caller's responsibility to perform any type conversions required to convert arguments to the type expected by the callee. An exception is where this Callable is explicitly an argument-converting wrapper around the original Callable.

        Returns:
        the result of the evaluation, in the form of a Sequence. It is the responsibility of the callee to ensure that the type of result conforms to the expected result type.
        Throws:
        XPathException - if a dynamic error occurs during the evaluation of the expression
      • getDescription

        public java.lang.String getDescription()
        Description copied from interface: FunctionItem
        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