org.apache.xpath.axes
Class FilterExprIterator

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.FilterExprIterator

public class FilterExprIterator
extends BasicTestIterator

See Also:
Serialized Form

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
 
Constructor Summary
FilterExprIterator()
          Create a FilterExprIterator object.
FilterExprIterator(Expression expr)
          Create a FilterExprIterator object.
 
Method Summary
 void callPredicateVisitors(XPathVisitor visitor)
          This will traverse the heararchy, calling the visitor for each member.
 boolean deepEquals(Expression expr)
           
 void detach()
          Detaches the walker from the set which it iterated over, releasing any computational resources and placing the iterator in the INVALID state.
 void fixupVariables(java.util.Vector vars, int globalsSize)
          This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time.
 int getAnalysisBits()
          Get the analysis bits for this walker, as defined in the WalkerFactory.
 Expression getInnerExpression()
          Get the inner contained expression of this filter.
 boolean isDocOrdered()
          Returns true if all the nodes in the iteration well be returned in document order.
 void setInnerExpression(Expression expr)
          Set the inner contained expression of this filter.
 void setRoot(int context, java.lang.Object environment)
          Initialize the context values for this expression after it is cloned.
 
Methods inherited from class org.apache.xpath.axes.BasicTestIterator
cloneWithReset, nextNode
 
Methods inherited from class org.apache.xpath.axes.LocPathIterator
allowDetachToRelease, asIterator, asNode, bool, callVisitors, execute, executeCharsToContentHandler, getAxis, getContext, getCurrentContextNode, getCurrentNode, getCurrentPos, getDTM, getDTMManager, getExpandEntityReferences, getFilter, getFoundLast, getIsTopLevel, getLastPos, getLength, getPrefixResolver, getRoot, getWhatToShow, getXPathContext, incrementCurrentPos, isFresh, isMutable, isNodesetExpr, item, previousNode, reset, runTo, setCurrentContextNode, setCurrentPos, setEnvironment, setIsTopLevel, setItem, setShouldCacheNodes, size
 
Methods inherited from class org.apache.xpath.axes.PredicatedNodeTest
acceptNode, canTraverseOutsideSubtree, clone, 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
 

Constructor Detail

FilterExprIterator

public FilterExprIterator()
Create a FilterExprIterator object.

FilterExprIterator

public FilterExprIterator(Expression expr)
Create a FilterExprIterator object.
Method Detail

setRoot

public void setRoot(int context,
                    java.lang.Object environment)
Initialize the context values for this expression after it is cloned.
Parameters:
context - The XPath runtime context for this transformation.
Overrides:
setRoot in class LocPathIterator

detach

public void detach()
Detaches the walker from the set which it iterated over, releasing any computational resources and placing the iterator in the INVALID state.
Overrides:
detach in class LocPathIterator

fixupVariables

public void fixupVariables(java.util.Vector vars,
                           int globalsSize)
This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time.
Parameters:
vars - List of QNames that correspond to variables. This list should be searched backwards for the first qualified name that corresponds to the variable reference qname. The position of the QName in the vector from the start of the vector will be its position in the stack frame (but variables above the globalsTop value will need to be offset to the current stack frame).
Overrides:
fixupVariables in class PredicatedNodeTest

getInnerExpression

public Expression getInnerExpression()
Get the inner contained expression of this filter.

setInnerExpression

public void setInnerExpression(Expression expr)
Set the inner contained expression of this filter.

getAnalysisBits

public int getAnalysisBits()
Get the analysis bits for this walker, as defined in the WalkerFactory.
Returns:
One of WalkerFactory#BIT_DESCENDANT, etc.
Overrides:
getAnalysisBits in class LocPathIterator

isDocOrdered

public boolean isDocOrdered()
Returns true if all the nodes in the iteration well be returned in document order. Warning: This can only be called after setRoot has been called!
Returns:
true as a default.
Overrides:
isDocOrdered in class LocPathIterator

callPredicateVisitors

public void callPredicateVisitors(XPathVisitor visitor)
This will traverse the heararchy, calling the visitor for each member. If the called visitor method returns false, the subtree should not be called.
Parameters:
visitor - The visitor whose appropriate method will be called.
Overrides:
callPredicateVisitors in class PredicatedNodeTest

deepEquals

public boolean deepEquals(Expression expr)
Overrides:
deepEquals in class PredicatedNodeTest
See Also:
Expression.deepEquals(Expression)


Copyright 2006 Apache XML Project. All Rights Reserved.