weblogic.apache.xpath.axes
Class SelfIteratorNoPredicate

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.SelfIteratorNoPredicate

public class SelfIteratorNoPredicate

extends LocPathIterator

This class implements an optimized iterator for "." patterns, that is, the self axes without any predicates.

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:

WalkerFactory.newDTMIterator(weblogic.apache.xpath.compiler.Compiler, int, boolean), Serialized Form

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

SelfIteratorNoPredicate()
Create a SelfIteratorNoPredicate object.

Method Summary

int	asNode(XPathContext xctxt) Return the first node out of the nodeset, if this expression is a nodeset expression.
int	getLastPos(XPathContext xctxt) Get the index of the last node that can be itterated to.
int	nextNode() Returns the next node in the set and advances the position of the iterator in the set.

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

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

SelfIteratorNoPredicate

public SelfIteratorNoPredicate()
                        throws javax.xml.transform.TransformerException

Create a SelfIteratorNoPredicate object.

Parameters:

compiler - A reference to the Compiler that contains the op map.

opPos - The position within the op map, which contains the location path expression for this itterator.

analysis - Analysis bits.

Throws:

javax.xml.transform.TransformerException -

Method Detail

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

asNode

public int asNode(XPathContext xctxt)
           throws javax.xml.transform.TransformerException

Return the first node out of the nodeset, if this expression is a nodeset expression. This is the default implementation for nodesets. Derived classes should try and override this and return a value without having to do a clone operation.

Parameters:

xctxt - The XPath runtime context.

Returns:

the first node out of the nodeset, or DTM.NULL.

Overrides:

asNode in class LocPathIterator

getLastPos

public int getLastPos(XPathContext xctxt)

Get the index of the last node that can be itterated to. This probably will need to be overridded by derived classes.

Parameters:

xctxt - XPath runtime context.

Returns:

the index of the last node that can be itterated to.

Overrides:

getLastPos in class LocPathIterator