Package net.sf.saxon.functions.registry

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 Summary

Constructors

Constructor	Description
HasUniformNamespaces()

Method Summary

Modifier and Type	Method	Description
BooleanValue	call(XPathContext context, Sequence[] arguments)	Invoke the function

Methods inherited from class net.sf.saxon.functions.SystemFunction

dependsOnContextItem, dynamicCall, equals, export, exportAdditionalArguments, exportAttributes, fixArguments, getArity, getCardinality, getCompilerName, getContextNode, getDescription, getDetails, getErrorCodeForTypeErrors, getFunctionItemType, getFunctionName, getIntegerBounds, getNetCost, getOperandRoles, getRequiredType, getResultItemType, getResultItemType, getRetainedStaticContext, getSpecialProperties, getStaticBaseUriString, getStreamerName, importAttributes, isTrustedResultType, makeCall, makeFunction, makeFunctionCall, makeOptimizedFunctionCall, resultIfEmpty, setArity, setDetails, setRetainedStaticContext, supplyTypeInformation, toShortString, toString, typeCheckCaller

Methods inherited from class net.sf.saxon.functions.AbstractFunction

atomize, deepEquals, effectiveBooleanValue, getAnnotations, getStringValue, getStringValueCS, isArray, isMap, makeNewContext, simplify, typeCheck

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface net.sf.saxon.om.Function

getGenre

Methods inherited from interface net.sf.saxon.om.GroundedValue

asIterable, concatenate, containsNode, materialize

Methods inherited from interface net.sf.saxon.om.Item

getLength, head, isStreamed, itemAt, iterate, reduce, subsequence

Methods inherited from interface net.sf.saxon.om.Sequence

makeRepeatable

Constructor Detail

HasUniformNamespaces

public HasUniformNamespaces()

Method Detail

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