Class VendorFunctionSetHE.HasUniformNamespaces

java.lang.Object
net.sf.saxon.functions.AbstractFunction
net.sf.saxon.functions.SystemFunction
net.sf.saxon.functions.registry.VendorFunctionSetHE.HasUniformNamespaces
All Implemented Interfaces:
Callable, Function, GroundedValue, Item, Sequence
Enclosing class:
VendorFunctionSetHE

public static class VendorFunctionSetHE.HasUniformNamespaces extends SystemFunction
Implement saxon:has-uniform-namespaces. The function takes an element node as input and returns true if it can be guaranteed that all descendant elements have the same namespace context as the target element. (If the result is false, there may or may not be descendant elements with new namespace declarations or undeclarations.)

This function is provided for use by the XSLT-compiler-in-XSLT, so that it can decide efficiently whether to generate an "ns" element containing namespace bindings in the SEF file.

Currently returns false for any non-TinyTree element.

  • Constructor Details

    • HasUniformNamespaces

      public HasUniformNamespaces()
  • Method Details

    • call

      public BooleanValue call(XPathContext context, Sequence[] arguments) throws XPathException
      Description copied from interface: Function
      Invoke the function
      Parameters:
      context - the XPath dynamic evaluation context
      arguments - the actual arguments to be supplied
      Returns:
      the result of invoking the function
      Throws:
      XPathException - if a dynamic error occurs within the function