weblogic.apache.xalan.transformer
Class KeyIterator

java.lang.Object
  |
  +--weblogic.apache.xpath.Expression
        |
        +--weblogic.apache.xpath.patterns.NodeTest
              |
              +--weblogic.apache.xpath.axes.PredicatedNodeTest
                    |
                    +--weblogic.apache.xpath.axes.LocPathIterator
                          |
                          +--weblogic.apache.xpath.axes.WalkingIterator
                                |
                                +--weblogic.apache.xalan.transformer.KeyIterator

public class KeyIterator

extends WalkingIterator

This class implements an optimized iterator for "key()" patterns. This iterator incrementally walks the source tree and finds all the nodes that match a given key name and match pattern.

This class is based on an implementation from the Apache XML Project. In future releases the XML parser, XSLT processor, and associated classes will likely be updated to be based on a later version of the Apache implementations. Since Apache does not guarantee backwards compatibility between versions of their software, we cannot guarantee backwards compatibility of any of the classes contained in the weblogic.apache package or sub-packages.

See Also:

Serialized Form

Fields inherited from class weblogic.apache.xpath.axes.WalkingIterator

m_firstWalker, m_lastUsedWalker

Fields inherited from class weblogic.apache.xpath.axes.LocPathIterator

m_cdtm, m_clones, m_context, m_currentContextNode, m_execContext, m_last, m_lastFetched, m_next, m_prefixResolver

Fields inherited from class weblogic.apache.xpath.axes.PredicatedNodeTest

m_foundLast, m_lpi, m_predCount, m_proximityPositions

Fields inherited from class weblogic.apache.xpath.patterns.NodeTest

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

Fields inherited from class weblogic.apache.xpath.Expression

m_slocator

Constructor Summary

KeyIterator(int doc, PrefixResolver nscontext, QName name, java.util.Vector keyDeclarations, XPathContext xctxt)
Constructor KeyIterator

Method Summary

java.util.Vector	getKeyDeclarations() Get the key declarations from the stylesheet
QName	getName() Get the key name from a key declaration this iterator will process
int	nextNode() Returns the next node in the set and advances the position of the iterator in the set.
void	setLookupKey(XMLString lookupKey) Set the value of the key that this iterator will look for

Methods inherited from class weblogic.apache.xpath.axes.WalkingIterator

clone, detach, fixupVariables, getFirstWalker, getLastUsedWalker, reset, setLastUsedWalker

Methods inherited from class weblogic.apache.xpath.axes.LocPathIterator

allowDetachToRelease, asIterator, asNode, bool, cloneWithReset, execute, findLastPos, getAxis, getCachedNodes, getContext, getCurrentContextNode, getCurrentNode, getCurrentPos, getDTM, getDTMManager, getExpandEntityReferences, getFilter, getFoundLast, getIsTopLevel, getLast, getLastPos, getLength, getPrefixResolver, getRoot, getWhatToShow, getXPathContext, isDocOrdered, isFresh, isMutable, isNodesetExpr, item, previousNode, returnNextNode, runTo, setCurrentContextNode, setCurrentPos, setEnvironment, setIsTopLevel, setItem, setLast, setNextPosition, setRoot, setShouldCacheNodes, size

Methods inherited from class weblogic.apache.xpath.axes.PredicatedNodeTest

acceptNode, canTraverseOutsideSubtree, countProximityPosition, getLocPathIterator, getPredicateCount, getPredicateIndex, getProximityPosition, getProximityPosition, getProximityPosition, initPredicateInfo, initProximityPosition, isReverseAxes, nodeToString, resetProximityPositions, setLocPathIterator, setPredicateCount

Methods inherited from class weblogic.apache.xpath.patterns.NodeTest

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

Methods inherited from class weblogic.apache.xpath.Expression

assertion, error, executeCharsToContentHandler, isStableNumber, num, setSourceLocator, warn, xstr

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyIterator

public KeyIterator(int doc,
                   PrefixResolver nscontext,
                   QName name,
                   java.util.Vector keyDeclarations,
                   XPathContext xctxt)

Constructor KeyIterator

Parameters:

doc - The document node

nscontext - The prefix resolver for the execution context.

name - The key name

keyDeclarations - The key declarations from the stylesheet

xctxt - The XPath runtime state

Method Detail

getName

public QName getName()

Get the key name from a key declaration this iterator will process

Returns:

Key name

getKeyDeclarations

public java.util.Vector getKeyDeclarations()

Get the key declarations from the stylesheet

Returns:

Vector containing the key declarations from the stylesheet

nextNode

public int nextNode()

Returns the next node in the set and advances the position of the iterator in the set. After a NodeIterator is created, the first call to nextNode() returns the first node in the set.

Returns:

The next Node in the set being iterated over, or null if there are no more members in that set.

Overrides:

nextNode in class WalkingIterator

setLookupKey

public void setLookupKey(XMLString lookupKey)

Set the value of the key that this iterator will look for

Parameters:

lookupKey - value of the key to look for