weblogic.apache.xpath.axes
Class MatchPatternIterator
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.MatchPatternIterator
- public class MatchPatternIterator
- extends LocPathIterator
This class treats a
LocationPath as a
filtered iteration over the tree, evaluating each node in a super axis
traversal against the LocationPath interpreted as a match pattern. This
class is useful to find nodes in document order that are complex paths
whose steps probably criss-cross each other.
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
Field Summary
|
protected StepPattern |
m_pattern
This is the select pattern, translated into a match pattern. |
protected int |
m_superAxis
The traversal axis from where the nodes will be filtered. |
protected weblogic.apache.xml.dtm.DTMAxisTraverser |
m_traverser
The DTM inner traversal class, that corresponds to the super axis. |
Method Summary
|
short |
acceptNode(int n,
XPathContext xctxt)
Test whether a specified node is visible in the logical view of a
TreeWalker or NodeIterator. |
protected int |
getNextNode()
Get the next node via getNextXXX. |
int |
nextNode()
Returns the next node in the set and advances the position of the
iterator in the set. |
void |
setRoot(int context,
java.lang.Object environment)
Initialize the context values for this expression
after it is cloned. |
Methods inherited from class weblogic.apache.xpath.axes.LocPathIterator |
allowDetachToRelease,
asIterator,
asNode,
bool,
cloneWithReset,
detach,
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,
reset,
returnNextNode,
runTo,
setCurrentContextNode,
setCurrentPos,
setEnvironment,
setIsTopLevel,
setItem,
setLast,
setNextPosition,
setShouldCacheNodes,
size |
Methods inherited from class weblogic.apache.xpath.axes.PredicatedNodeTest |
acceptNode,
canTraverseOutsideSubtree,
clone,
countProximityPosition,
fixupVariables,
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 java.lang.Object |
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
m_pattern
protected StepPattern m_pattern
- This is the select pattern, translated into a match pattern.
m_superAxis
protected int m_superAxis
- The traversal axis from where the nodes will be filtered.
m_traverser
protected weblogic.apache.xml.dtm.DTMAxisTraverser m_traverser
- The DTM inner traversal class, that corresponds to the super axis.
setRoot
public void setRoot(int context,
java.lang.Object environment)
- Initialize the context values for this expression
after it is cloned.
- Parameters:
execContext
- The XPath runtime context for this
transformation.- Overrides:
- setRoot in class LocPathIterator
getNextNode
protected int getNextNode()
- Get the next node via getNextXXX. Bottlenecked for derived class override.
- Returns:
- The next node on the axis, or DTM.NULL.
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 LocPathIterator
acceptNode
public short acceptNode(int n,
XPathContext xctxt)
- 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:
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 .
Copyright © 2004 BEA Systems, Inc. All Rights Reserved.
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