public abstract class PredicatedNodeTest extends NodeTest implements SubContextList
Modifier and Type | Field and Description |
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protected boolean |
m_foundLast
This is true if nextNode returns null.
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protected LocPathIterator |
m_lpi
The owning location path iterator.
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protected int |
m_predCount |
protected int[] |
m_proximityPositions
An array of counts that correspond to the number
of predicates the step contains.
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m_name, m_whatToShow, SCORE_NODETEST, SCORE_NONE, SCORE_NSWILD, SCORE_OTHER, SCORE_QNAME, SHOW_BYFUNCTION, SUPPORTS_PRE_STRIPPING, WILD
Modifier and Type | Method and Description |
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short |
acceptNode(int n)
Test whether a specified node is visible in the logical view of a
TreeWalker or NodeIterator.
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void |
callPredicateVisitors(XPathVisitor visitor)
This will traverse the heararchy, calling the visitor for
each member.
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boolean |
canTraverseOutsideSubtree()
Tell if this expression or it's subexpressions can traverse outside
the current subtree.
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Object |
clone()
Get a cloned PrdicatedNodeTest.
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protected void |
countProximityPosition(int i)
Count forward one proximity position.
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boolean |
deepEquals(Expression expr)
Compare this object with another object and see
if they are equal, include the sub heararchy.
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void |
fixupVariables(Vector vars,
int globalsSize)
This function is used to fixup variables from QNames to stack frame
indexes at stylesheet build time.
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abstract int |
getLastPos(XPathContext xctxt)
Get the index of the last node that can be itterated to.
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LocPathIterator |
getLocPathIterator()
Get the owning location path iterator.
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Expression |
getPredicate(int index)
Get a predicate expression at the given index.
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int |
getPredicateCount()
Get the number of predicates that this walker has.
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int |
getPredicateIndex()
Get which predicate is executing.
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int |
getProximityPosition()
Get the current sub-context position.
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protected int |
getProximityPosition(int predicateIndex)
Get the current sub-context position.
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int |
getProximityPosition(XPathContext xctxt)
Get the current sub-context position.
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protected void |
initPredicateInfo(Compiler compiler,
int opPos)
Init predicate info.
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void |
initProximityPosition(int i)
Init the proximity position to zero for a forward axes.
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boolean |
isReverseAxes()
Tells if this is a reverse axes.
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protected String |
nodeToString(int n)
Diagnostics.
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void |
resetProximityPositions()
Reset the proximity positions counts.
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void |
setLocPathIterator(LocPathIterator li)
Set the location path iterator owner for this walker.
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void |
setPredicateCount(int count)
Set the number of predicates that this walker has.
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calcScore, callVisitors, debugWhatToShow, execute, execute, execute, getDefaultScore, getLocalName, getNamespace, getNodeTypeTest, getStaticScore, getWhatToShow, initNodeTest, initNodeTest, setLocalName, setNamespace, setStaticScore, setWhatToShow
asIterator, asIteratorRaw, asNode, assertion, bool, error, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isNodesetExpr, isSameClass, isStableNumber, num, warn, xstr
protected int m_predCount
protected transient boolean m_foundLast
protected LocPathIterator m_lpi
protected transient int[] m_proximityPositions
public Object clone() throws CloneNotSupportedException
clone
in class Object
CloneNotSupportedException
public int getPredicateCount()
public void setPredicateCount(int count)
count
- The number of predicates, which must be equal or less
than the existing count.protected void initPredicateInfo(Compiler compiler, int opPos) throws TransformerException
compiler
- The Compiler object that has information about this
walker in the op map.opPos
- The op code position of this location step.TransformerException
public Expression getPredicate(int index)
index
- Index of the predicate.public int getProximityPosition()
public int getProximityPosition(XPathContext xctxt)
getProximityPosition
in interface SubContextList
xctxt
- The XPath runtime context.public abstract int getLastPos(XPathContext xctxt)
getLastPos
in interface SubContextList
xctxt
- XPath runtime context.protected int getProximityPosition(int predicateIndex)
predicateIndex
- The index of the predicate where the proximity
should be taken from.public void resetProximityPositions()
public void initProximityPosition(int i) throws TransformerException
i
- The index into the m_proximityPositions array.TransformerException
protected void countProximityPosition(int i)
i
- The index into the m_proximityPositions array, where the increment
will occur.public boolean isReverseAxes()
public int getPredicateIndex()
public void fixupVariables(Vector vars, int globalsSize)
fixupVariables
in class NodeTest
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).protected String nodeToString(int n)
n
- Node to give diagnostic information about, or null.public short acceptNode(int n)
n
- The node to check to see if it passes the filter or not.public LocPathIterator getLocPathIterator()
public void setLocPathIterator(LocPathIterator li)
li
- non-null reference to the owning location path iterator.public boolean canTraverseOutsideSubtree()
canTraverseOutsideSubtree
in class Expression
public void callPredicateVisitors(XPathVisitor visitor)
visitor
- The visitor whose appropriate method will be called.public boolean deepEquals(Expression expr)
Expression
deepEquals
in class NodeTest
expr
- Another expression object.Expression.deepEquals(Expression)
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