Package gnu.xquery.util

Class RelativeStepFilter

java.lang.Object

gnu.lists.FilterConsumer

gnu.xquery.util.RelativeStepFilter

All Implemented Interfaces:

Consumer, PositionConsumer, XConsumer, Appendable, Consumer<Object>, DoubleConsumer, IntConsumer, LongConsumer

public class RelativeStepFilter
extends FilterConsumer
implements PositionConsumer

Used to filter the output of RelativeStep. Atomic values are passed though as-is, while node values are sorted by document order and duplicates removed. An exception is thrown if there is a mix of atoms and nodes. Informally: E1/E2 is implemented as: RelativeStepFilter(for $dot in E1 return E2).

Field Summary

Fields inherited from class gnu.lists.FilterConsumer

attributeType, base, inAttribute, skipping

Constructor Summary

Constructors

Constructor	Description
RelativeStepFilter(Consumer base)

Method Summary

Modifier and Type	Method	Description
protected void	beforeContent()
void	finish()
void	writeObject(Object v)
void	writePosition(AbstractSequence seq, int ipos)	Consume a single position pair.
void	writePosition(SeqPosition position)	Consume node at current position.

Methods inherited from class gnu.lists.FilterConsumer

append, append, append, beforeNode, beginEntity, endAttribute, endDocument, endElement, endEntity, ignoring, startAttribute, startDocument, startElement, write, write, write, write, writeBoolean, writeCDATA, writeComment, writeDouble, writeFloat, writeInt, writeLong, writeProcessingInstruction

Methods inherited from class java.lang.Object

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

Methods inherited from interface gnu.lists.Consumer

accept, accept, accept, accept

Methods inherited from interface java.util.function.Consumer

andThen

Methods inherited from interface java.util.function.DoubleConsumer

andThen

Methods inherited from interface java.util.function.IntConsumer

andThen

Methods inherited from interface java.util.function.LongConsumer

andThen

Constructor Details

RelativeStepFilter

public RelativeStepFilter(Consumer base)

Method Details

writePosition

public void writePosition(SeqPosition position)

Description copied from interface: PositionConsumer

Consume node at current position. The caller may invalidate or change the position after consume returns, so if the consumer wants to save it, it needs to copy it.

Specified by:

writePosition in interface PositionConsumer

writeObject

public void writeObject(Object v)

Specified by:

writeObject in interface Consumer

Overrides:

writeObject in class FilterConsumer

beforeContent

protected void beforeContent()

Overrides:

beforeContent in class FilterConsumer

writePosition

public void writePosition(AbstractSequence seq,
 int ipos)

Description copied from interface: PositionConsumer

Consume a single position pair. This PositionConsumer may assume the sequence does no reference management; i.e. that copyPos is trivial and releasePos is a no-op. If that is not the case, use consume(TreePosition) instead.

Specified by:

writePosition in interface PositionConsumer

finish

public void finish()