net.sf.saxon.functions

Class ContextItemAccessorFunction.StringAccessor

java.lang.Object

net.sf.saxon.om.AbstractItem

net.sf.saxon.functions.AbstractFunction

net.sf.saxon.functions.SystemFunction

net.sf.saxon.functions.ContextAccessorFunction

net.sf.saxon.functions.ContextItemAccessorFunction

net.sf.saxon.functions.ContextItemAccessorFunction.StringAccessor

All Implemented Interfaces:

PullEvent, Callable, Function, GroundedValue, Item, Sequence

Enclosing class:

ContextItemAccessorFunction

public static class ContextItemAccessorFunction.StringAccessor
extends ContextItemAccessorFunction

Subclass of ContextItemAccessorFunction to handle string-length() and normalize-space(). These functions differ by taking string(.) rather than (.) as the implicit argument.

Nested Class Summary

Nested classes/interfaces inherited from class net.sf.saxon.functions.ContextItemAccessorFunction

ContextItemAccessorFunction.Number_0, ContextItemAccessorFunction.StringAccessor

Constructor Summary

Constructors

Constructor and Description
ContextItemAccessorFunction.StringAccessor()

Method Summary

Methods

Modifier and Type	Method and Description
GroundedValue	evaluate(Item item, XPathContext context) Evaluate the function.
Expression	makeFunctionCall(Expression[] arguments) Make a static call on this function, with specified arguments.

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

bindContext, call, makeContextItemExplicit

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

equals, export, exportAttributes, getArity, getCardinality, getContextNode, getDescription, getDetails, getErrorCodeForTypeErrors, getExpressionCompiler, getFunctionItemType, getFunctionName, getIntegerBounds, getOperandRoles, getRequiredType, getResultItemType, getResultItemType, getRetainedStaticContext, getSpecialProperties, getStaticBaseUriString, getStreamingAdjunct, importAttributes, makeCall, makeFunction, makeOptimizedFunctionCall, resultIfEmpty, setArity, setDetails, setRetainedStaticContext, supplyTypeInformation, typeCheckCaller

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

atomize, deepEquals, effectiveBooleanValue, getStringValue, getStringValueCS, isArray, isMap, optimize, simplify, typeCheck

Methods inherited from class net.sf.saxon.om.AbstractItem

getLength, head, itemAt, iterate, reduce, subsequence

Methods inherited from class java.lang.Object

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

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

iterate

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

head

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

getLength, head, itemAt, reduce, subsequence

Constructor Detail

ContextItemAccessorFunction.StringAccessor

public ContextItemAccessorFunction.StringAccessor()

Method Detail

makeFunctionCall

public Expression makeFunctionCall(Expression[] arguments)

Description copied from class: ContextItemAccessorFunction

Make a static call on this function, with specified arguments.

Overrides:

makeFunctionCall in class ContextItemAccessorFunction

Parameters:

arguments - the supplied arguments to the function call. This will always be an empty array, since this is a zero-arity function.

Returns:

This implementation returns a call on the equivalent arity-1 version of the function, supplying "." as an explicit argument.

evaluate

public GroundedValue evaluate(Item item,
                     XPathContext context)
                       throws XPathException

Description copied from class: ContextItemAccessorFunction

Evaluate the function. This is done by creating a function of the same name, with the context item as an explicit argument, and evaluating that.

Overrides:

evaluate in class ContextItemAccessorFunction

Parameters:

item - the context item

context - XPath dynamic context (not normally used)

Returns:

the result of the function

Throws:

XPathException - in the event of a dynamic error