net.sf.saxon.expr.flwor

Class ForMemberClausePull

java.lang.Object

net.sf.saxon.expr.flwor.TuplePull

net.sf.saxon.expr.flwor.ForClausePull

net.sf.saxon.expr.flwor.ForMemberClausePull

public class ForMemberClausePull
extends ForClausePull

This class implements the changes to the tuple stream effected by a "for" clause in a FLWOR expression

Field Summary

Fields inherited from class net.sf.saxon.expr.flwor.ForClausePull

base, currentIteration, forClause

Constructor Summary

Constructors

Constructor and Description
ForMemberClausePull(TuplePull base, ForMemberClause forClause)

Method Summary

Modifier and Type	Method and Description
protected SequenceIterator	getIterator(XPathContext context) Get an iterator over the items or members in the target collection.
protected GroundedValue	variableValue(Item item) Get the value to be bound to the iteration variable

Methods inherited from class net.sf.saxon.expr.flwor.ForClausePull

close, nextTuple

Methods inherited from class java.lang.Object

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

Constructor Detail

ForMemberClausePull

public ForMemberClausePull(TuplePull base,
                           ForMemberClause forClause)

Method Detail

getIterator

protected SequenceIterator getIterator(XPathContext context)
                                throws XPathException

Description copied from class: ForClausePull

Get an iterator over the items or members in the target collection.

Overrides:

getIterator in class ForClausePull

Parameters:

context - dynamic evaluation context

Returns:

for a simple "for $x" clause, the sequence of items to which $x will be bound. For a "for member ¢x" clause, the sequence of array members, each wrapped as an object value

Throws:

XPathException - if evaluation fails

variableValue

protected GroundedValue variableValue(Item item)

Description copied from class: ForClausePull

Get the value to be bound to the iteration variable

Overrides:

variableValue in class ForClausePull

Parameters:

item - the value returned by the sequence iterator

Returns:

the value to be assigned to the iteration variable