net.sf.saxon.expr.flwor
Class ForClauseOuterPull

java.lang.Object
  net.sf.saxon.expr.flwor.TuplePull
      net.sf.saxon.expr.flwor.ForClausePull
          net.sf.saxon.expr.flwor.ForClauseOuterPull

public class ForClauseOuterPull
extends ForClausePull

This class represents the tuple stream returned 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

ForClauseOuterPull(TuplePull base, ForClause forClause)

Method Summary

void	close() Close the tuple stream, indicating that although not all tuples have been read, no further tuples are required and resources can be released
boolean	nextTuple(XPathContext context) Deliver the next output tuple.

Methods inherited from class java.lang.Object

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

Constructor Detail

ForClauseOuterPull

public ForClauseOuterPull(TuplePull base,
                          ForClause forClause)

Method Detail

nextTuple

public boolean nextTuple(XPathContext context)
                  throws XPathException

Deliver the next output tuple. Before returning, this method must set all the variables corresponding to the output tuple in the local stack frame associated with the context object

Overrides:

nextTuple in class ForClausePull

Parameters:

context - the dynamic evaluation context

Returns:

true if another tuple has been generated; false if the tuple stream is exhausted. If the method returns false, the values of the local variables corresponding to this tuple stream are undefined.

Throws:

XPathException

close

public void close()

Close the tuple stream, indicating that although not all tuples have been read, no further tuples are required and resources can be released

Overrides:

close in class ForClausePull