org.htmlunit.xpath.axes

Class UnionChildIterator

java.lang.Object

org.htmlunit.xpath.Expression

org.htmlunit.xpath.patterns.NodeTest

org.htmlunit.xpath.axes.PredicatedNodeTest

org.htmlunit.xpath.axes.LocPathIterator

org.htmlunit.xpath.axes.BasicTestIterator

org.htmlunit.xpath.axes.ChildTestIterator

org.htmlunit.xpath.axes.UnionChildIterator

All Implemented Interfaces:

Cloneable, SourceLocator, PathComponent, SubContextList, ExpressionNode, DTMIterator, XPathVisitable

public class UnionChildIterator
extends ChildTestIterator

This class defines a simplified type of union iterator that only tests along the child axes. If the conditions are right, it is much faster than using a UnionPathIterator.

Field Summary

Fields inherited from class org.htmlunit.xpath.axes.ChildTestIterator

m_traverser

Fields inherited from class org.htmlunit.xpath.axes.LocPathIterator

m_cdtm, m_clones, m_context, m_currentContextNode, m_execContext, m_lastFetched, m_length, m_pos

Fields inherited from class org.htmlunit.xpath.axes.PredicatedNodeTest

m_foundLast, m_lpi, m_predCount, m_proximityPositions

Fields inherited from class org.htmlunit.xpath.patterns.NodeTest

m_name, m_whatToShow, SCORE_NODETEST, SCORE_NONE, SCORE_NSWILD, SCORE_OTHER, SCORE_QNAME, SHOW_BYFUNCTION, WILD

Fields inherited from interface org.htmlunit.xpath.xml.dtm.DTMIterator

FILTER_ACCEPT, FILTER_SKIP

Constructor Summary

Constructors

Constructor and Description
UnionChildIterator() Constructor for UnionChildIterator

Method Summary

Modifier and Type	Method and Description
short	acceptNode(int n) Test whether a specified node is visible in the logical view of a TreeWalker or NodeIterator.
void	addNodeTest(PredicatedNodeTest test) Add a node test to the union list.

Methods inherited from class org.htmlunit.xpath.axes.ChildTestIterator

cloneWithReset, detach, getAxis, getNextNode, setRoot

Methods inherited from class org.htmlunit.xpath.axes.BasicTestIterator

nextNode

Methods inherited from class org.htmlunit.xpath.axes.LocPathIterator

asIterator, asNode, bool, callVisitors, execute, getAnalysisBits, getCurrentNode, getCurrentPos, getDTM, getDTMManager, getExpandEntityReferences, getIsTopLevel, getLastPos, getLength, getPrefixResolver, getRoot, getWhatToShow, getXPathContext, incrementCurrentPos, isDocOrdered, isFresh, item, previousNode, reset, returnNextNode, runTo, setCurrentPos, setIsTopLevel, setShouldCacheNodes

Methods inherited from class org.htmlunit.xpath.axes.PredicatedNodeTest

callPredicateVisitors, canTraverseOutsideSubtree, clone, countProximityPosition, deepEquals, getPredicate, getPredicateCount, getProximityPosition, getProximityPosition, getProximityPosition, initPredicateInfo, initProximityPosition, isReverseAxes, nodeToString, resetProximityPositions, setLocPathIterator, setPredicateCount

Methods inherited from class org.htmlunit.xpath.patterns.NodeTest

calcScore, execute, execute, getLocalName, getNamespace, getNodeTypeTest, getStaticScore, initNodeTest, initNodeTest, setLocalName, setNamespace, setStaticScore, setWhatToShow

Methods inherited from class org.htmlunit.xpath.Expression

assertion, error, execute, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isSameClass, isStableNumber, num

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.htmlunit.xpath.xml.dtm.DTMIterator

clone

Constructor Detail

UnionChildIterator

public UnionChildIterator()

Constructor for UnionChildIterator

Method Detail

addNodeTest

public void addNodeTest(PredicatedNodeTest test)

Add a node test to the union list.

Parameters:

test - reference to a NodeTest, which will be added directly to the list of node tests (in other words, it will not be cloned). The parent of this test will be set to this object.

acceptNode

public short acceptNode(int n)

Test whether a specified node is visible in the logical view of a TreeWalker or NodeIterator. This function will be called by the implementation of TreeWalker and NodeIterator; it is not intended to be called directly from user code.

Overrides:

acceptNode in class PredicatedNodeTest

Parameters:

n - The node to check to see if it passes the filter or not.

Returns:

a constant to determine whether the node is accepted, rejected, or skipped, as defined above .