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java.lang.Object | +--org.apache.xpath.Expression | +--org.apache.xpath.patterns.NodeTest | +--org.apache.xpath.axes.PredicatedNodeTest | +--org.apache.xpath.axes.AxesWalker | +--org.apache.xalan.transformer.KeyWalker
**For internal use only** Walker for a Key() function.
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 |
Constructor Summary | |
KeyWalker(LocPathIterator locPathIterator)
Construct a KeyWalker using a LocPathIterator. |
Method Summary | |
short |
acceptNode(int testNode)
Test whether a specified node is visible in the logical view of a TreeWalker or NodeIterator. |
int |
nextNode()
Moves the TreeWalker to the next visible node in document
order relative to the current node, and returns the new node. |
void |
setRoot(int root)
Set the root node of the TreeWalker. |
Methods inherited from class org.apache.xpath.axes.AxesWalker |
clone,
getAxis,
getCurrentNode,
getDTM,
getLastPos,
getNextWalker,
getPrevWalker,
getRoot,
init,
isDocOrdered,
setDefaultDTM,
setNextWalker,
setPrevWalker,
wi |
Methods inherited from class org.apache.xpath.axes.PredicatedNodeTest |
canTraverseOutsideSubtree,
fixupVariables,
getLocPathIterator,
getPredicateCount,
getPredicateIndex,
getProximityPosition,
getProximityPosition,
initProximityPosition,
isReverseAxes,
resetProximityPositions,
setLocPathIterator,
setPredicateCount |
Methods inherited from class org.apache.xpath.patterns.NodeTest |
debugWhatToShow,
execute,
execute,
execute,
getDefaultScore,
getLocalName,
getNamespace,
getNodeTypeTest,
getStaticScore,
getWhatToShow,
initNodeTest,
initNodeTest,
setLocalName,
setNamespace,
setStaticScore,
setWhatToShow |
Methods inherited from class org.apache.xpath.Expression |
asIterator,
asNode,
assertion,
bool,
error,
executeCharsToContentHandler,
isNodesetExpr,
isStableNumber,
num,
setSourceLocator,
warn,
xstr |
Methods inherited from class java.lang.Object |
equals,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
Constructor Detail |
public KeyWalker(LocPathIterator locPathIterator)
locPathIterator:
- this is usually a KeyIteratorMethod Detail |
public void setRoot(int root)
root
- Document root nodepublic short acceptNode(int testNode)
testnode
- The node to check to see if it passes the filter or not.public int nextNode()
TreeWalker
to the next visible node in document
order relative to the current node, and returns the new node. If the
current node has no next node, or if the search for nextNode attempts
to step upward from the TreeWalker's root node, returns
null
, and retains the current node.null
if the current node has no
next node in the TreeWalker's logical view.
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