Package net.sf.saxon.expr

Class SystemFunctionCall.SystemFunctionCallElaborator

java.lang.Object

net.sf.saxon.expr.elab.Elaborator

net.sf.saxon.expr.elab.PullElaborator

net.sf.saxon.expr.FunctionCall.FunctionCallElaborator

net.sf.saxon.expr.SystemFunctionCall.SystemFunctionCallElaborator

Enclosing class:

SystemFunctionCall

public static class SystemFunctionCall.SystemFunctionCallElaborator
extends FunctionCall.FunctionCallElaborator

Elaborator for a system function call, used in cases where the specific function call has no custom support

Field Summary

Fields inherited from class net.sf.saxon.expr.FunctionCall.FunctionCallElaborator

argumentEvaluators

Constructor Summary

Constructors

Constructor	Description
SystemFunctionCallElaborator()

Method Summary

Modifier and Type	Method	Description
ItemEvaluator	elaborateForItem()	Get a function that evaluates the underlying expression in the form of a Item.
PullEvaluator	elaborateForPull()	Get a function that evaluates the underlying expression in the form of a SequenceIterator
PushEvaluator	elaborateForPush()	Get a function that evaluates the underlying expression in push mode, by writing events to an Outputter
UpdateEvaluator	elaborateForUpdate()
void	setExpression(Expression expr)	Set the expression being elaborated

Methods inherited from class net.sf.saxon.expr.FunctionCall.FunctionCallElaborator

allocateArgumentEvaluators, evaluateArguments

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

eagerly, elaborateForBoolean, elaborateForUnicodeString

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

elaborateForString, 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

Constructor Detail

SystemFunctionCallElaborator

public SystemFunctionCallElaborator()

Method Detail

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

elaborateForPull

public PullEvaluator elaborateForPull()

Description copied from class: Elaborator

Get a function that evaluates the underlying expression in the form of a SequenceIterator

Specified by:

elaborateForPull in class PullElaborator

Returns:

an evaluator for the expression that returns a SequenceIterator

elaborateForItem

public ItemEvaluator elaborateForItem()

Description copied from class: Elaborator

Get a function that evaluates the underlying expression in the form of a Item. This must only be called for expressions whose result has cardinality zero or one.

Overrides:

elaborateForItem in class PullElaborator

Returns:

an evaluator for the expression that returns an Item, or null to represent an empty sequence.

elaborateForPush

public PushEvaluator elaborateForPush()

Description copied from class: Elaborator

Get a function that evaluates the underlying expression in push mode, by writing events to an Outputter

Overrides:

elaborateForPush in class PullElaborator

Returns:

an evaluator for the expression in push mode

elaborateForUpdate

public UpdateEvaluator elaborateForUpdate()

Overrides:

elaborateForUpdate in class Elaborator