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## 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 ChildTestIterator object.
`FilterExprIterator(Expression expr)` Create a ChildTestIterator 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 ChildTestIterator object.
  Parameters:
    `traverser` - Traverser that tells how the KeyIterator is to be handled.
  Throws:
    TransformerException -

### FilterExprIterator

    public FilterExprIterator(Expression expr)

  Create a ChildTestIterator object.
  Parameters:
    `traverser` - Traverser that tells how the KeyIterator is to be handled.
  Throws:
    TransformerException -

Method Detail

### 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

### 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:
    `owner` - The owner of the visitor, where that path may be rewritten if needed.
    `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)`

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