org.apache.xalan.transformer
Class KeyIterator

java.lang.Object
  |
  +--org.apache.xpath.Expression
        |
        +--org.apache.xpath.patterns.NodeTest
              |
              +--org.apache.xpath.axes.PredicatedNodeTest
                    |
                    +--org.apache.xpath.axes.LocPathIterator
                          |
                          +--org.apache.xpath.axes.BasicTestIterator
                                |
                                +--org.apache.xpath.axes.ChildTestIterator
                                      |
                                      +--org.apache.xpath.axes.OneStepIteratorForward
                                            |
                                            +--org.apache.xalan.transformer.KeyIterator

public class KeyIterator

extends OneStepIteratorForward

This class implements an optimized iterator for "key()" patterns, matching each node to the match attribute in one or more xsl:key declarations.

See Also:

Serialized Form

Usage:

**For internal use only**

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

m_lastFetched

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

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

Method Summary

short	acceptNode(int testNode) Test whether a specified node is visible in the logical view of a TreeWalker or NodeIterator.
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

Methods inherited from class org.apache.xpath.axes.OneStepIteratorForward

deepEquals, getAxis, setRoot

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

cloneWithReset, detach

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

nextNode

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

allowDetachToRelease, asIterator, asNode, bool, callVisitors, execute, executeCharsToContentHandler, getAnalysisBits, getContext, getCurrentContextNode, getCurrentNode, getCurrentPos, getDTM, getDTMManager, getExpandEntityReferences, getFilter, getFoundLast, getIsTopLevel, getLastPos, getLength, getPrefixResolver, getRoot, getWhatToShow, getXPathContext, incrementCurrentPos, isDocOrdered, isFresh, isMutable, isNodesetExpr, item, previousNode, reset, runTo, setCurrentContextNode, setCurrentPos, setEnvironment, setIsTopLevel, setItem, setShouldCacheNodes, size

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

callPredicateVisitors, canTraverseOutsideSubtree, clone, fixupVariables, getLocPathIterator, getPredicate, getPredicateCount, getPredicateIndex, getProximityPosition, getProximityPosition, initProximityPosition, isReverseAxes, resetProximityPositions, setLocPathIterator, setPredicateCount

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

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

Methods inherited from class org.apache.xpath.Expression

asIteratorRaw, assertion, error, execute, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isStableNumber, num, warn, xstr

Methods inherited from class java.lang.Object

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

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

acceptNode

public short acceptNode(int testNode)

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.

Parameters:

testNode - 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 .

Overrides:

acceptNode in class PredicatedNodeTest