Package net.sf.saxon.expr

Class FunctionCall.FunctionCallElaborator

java.lang.Object

net.sf.saxon.expr.elab.Elaborator

net.sf.saxon.expr.elab.PullElaborator

net.sf.saxon.expr.FunctionCall.FunctionCallElaborator

Direct Known Subclasses:

SystemFunctionCall.SystemFunctionCallElaborator

Enclosing class:

FunctionCall

public abstract static class FunctionCall.FunctionCallElaborator
extends PullElaborator

Field Summary

Fields

Modifier and Type	Field	Description
protected SequenceEvaluator[]	argumentEvaluators

Constructor Summary

Constructors

Constructor	Description
FunctionCallElaborator()

Method Summary

Modifier and Type	Method	Description
protected void	allocateArgumentEvaluators(FunctionCall expr, boolean allowRepeatedUse)	Allocate evaluation functions for each argument (in field argumentEvaluators)
protected Sequence[]	evaluateArguments(XPathContext context)
void	setExpression(Expression expr)	Set the expression being elaborated

Methods inherited from class net.sf.saxon.expr.elab.PullElaborator

eagerly, elaborateForBoolean, elaborateForItem, elaborateForPull, elaborateForPush, elaborateForUnicodeString

Methods inherited from class net.sf.saxon.expr.elab.Elaborator

elaborateForString, elaborateForUpdate, getConfiguration, getExpression, handleNullString, handleNullUnicodeString, handlePossiblyNullString, handlePossiblyNullUnicodeString, lazily

Methods inherited from class java.lang.Object

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

Field Details

argumentEvaluators

protected SequenceEvaluator[] argumentEvaluators

Constructor Details

FunctionCallElaborator

public FunctionCallElaborator()

Method Details

setExpression

public void setExpression(Expression expr)

Description copied from class: Elaborator

Set the expression being elaborated

Overrides:

setExpression in class Elaborator

Parameters:

expr - the expression

allocateArgumentEvaluators

protected void allocateArgumentEvaluators(FunctionCall expr,
 boolean allowRepeatedUse)

Allocate evaluation functions for each argument (in field argumentEvaluators)

Parameters:

expr - the function call

allowRepeatedUse - true if the value of the argument must be supplied to the function in a way that allows repeated use. This will be true for user-written functions, false for system functions, where the implementation is arranged to only use the value once.

evaluateArguments

protected Sequence[] evaluateArguments(XPathContext context)
                                throws XPathException

Throws:

XPathException