Class InScopePrefixes

All Implemented Interfaces:
Callable, FunctionItem, GroundedValue, Item, Sequence

public class InScopePrefixes extends SystemFunction
This class implements the XPath 2.0 function fn:in-scope-prefixes()
  • Constructor Details

    • InScopePrefixes

      public InScopePrefixes()
  • Method Details

    • call

      public Sequence call(XPathContext context, Sequence[] arguments) throws XPathException
      Call of in-scope-prefixes
      Parameters:
      context - the dynamic evaluation context
      arguments - 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 methd 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 sequence of prefixes
      Throws:
      XPathException - if a dynamic error occurs