org.apache.xpath.patterns
public class StepPattern extends NodeTest implements SubContextList, ExpressionOwner
UNKNOWN: advanced
Constructor Summary | |
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StepPattern(int whatToShow, String namespace, String name, int axis, int axisForPredicate)
Construct a StepPattern that tests for namespaces and node names.
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StepPattern(int whatToShow, int axis, int axisForPredicate)
Construct a StepPattern that doesn't test for node names.
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Method Summary | |
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void | calcScore()
Static calc of match score. |
void | calcTargetString()
Calculate the local name or psuedo name of the node that this pattern will test,
for hash table lookup optimization.
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void | callVisitors(ExpressionOwner owner, XPathVisitor visitor) |
boolean | canTraverseOutsideSubtree()
Tell if this expression or it's subexpressions can traverse outside
the current subtree.
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boolean | deepEquals(Expression expr) |
XObject | execute(XPathContext xctxt, int currentNode)
Execute this pattern step, including predicates.
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XObject | execute(XPathContext xctxt)
Execute this pattern step, including predicates.
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XObject | execute(XPathContext xctxt, int currentNode, DTM dtm, int expType)
Execute an expression in the XPath runtime context, and return the
result of the expression.
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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. |
int | getAxis()
Get the axis that this step follows.
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Expression | getExpression() |
int | getLastPos(XPathContext xctxt)
Get the count of the nodes that match the test, which is the proximity
position of the last node that can pass this test in the sub context
selection. |
double | getMatchScore(XPathContext xctxt, int context)
Get the match score of the given node.
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Expression | getPredicate(int i)
Get a predicate expression.
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int | getPredicateCount()
Get the number of predicates for this match pattern step.
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Expression[] | getPredicates()
Set the list of predicate expressions for this pattern step. |
int | getProximityPosition(XPathContext xctxt)
Get the proximity position index of the current node based on this
node test.
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StepPattern | getRelativePathPattern()
Get the reference to nodetest and predicate for
parent or ancestor.
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String | getTargetString()
Get the local name or psuedo name of the node that this pattern will test,
for hash table lookup optimization.
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void | setAxis(int axis)
Set the axis that this step should follow.
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void | setExpression(Expression exp) |
void | setPredicates(Expression[] predicates)
Set the predicates for this match pattern step.
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void | setRelativePathPattern(StepPattern expr)
Set the reference to nodetest and predicate for
parent or ancestor.
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String | toString()
Get the string represenentation of this step for diagnostic purposes.
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Parameters: whatToShow Bit set defined mainly by {@link org.w3c.dom.traversal.NodeFilter}. namespace The namespace to be tested. name The local name to be tested. axis The Axis for this test, one of of Axes.ANCESTORORSELF, etc. axisForPredicate No longer used.
Parameters: whatToShow Bit set defined mainly by {@link org.w3c.dom.traversal.NodeFilter}. axis The Axis for this test, one of of Axes.ANCESTORORSELF, etc. axisForPredicate No longer used.
See Also: PsuedoNames
See Also: XPathVisitable
Returns: true if traversal outside the context node's subtree can occur.
See Also: deepEquals
Parameters: xctxt XPath runtime context. currentNode The current node context.
Returns: {@link org.apache.xpath.patterns.NodeTest#SCORE_NODETEST}, {@link org.apache.xpath.patterns.NodeTest#SCORE_NONE}, {@link org.apache.xpath.patterns.NodeTest#SCORE_NSWILD}, {@link org.apache.xpath.patterns.NodeTest#SCORE_QNAME}, or {@link org.apache.xpath.patterns.NodeTest#SCORE_OTHER}.
Throws: javax.xml.transform.TransformerException
Parameters: xctxt XPath runtime context.
Returns: {@link org.apache.xpath.patterns.NodeTest#SCORE_NODETEST}, {@link org.apache.xpath.patterns.NodeTest#SCORE_NONE}, {@link org.apache.xpath.patterns.NodeTest#SCORE_NSWILD}, {@link org.apache.xpath.patterns.NodeTest#SCORE_QNAME}, or {@link org.apache.xpath.patterns.NodeTest#SCORE_OTHER}.
Throws: javax.xml.transform.TransformerException
Parameters: xctxt The XPath runtime context. currentNode The currentNode. dtm The DTM of the current node. expType The expanded type ID of the current node.
Returns: The result of the expression in the form of a XObject
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Throws: javax.xml.transform.TransformerException if a runtime exception occurs.
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). globalsSize The number of variables in the global variable area.
Returns: The Axis for this test, one of of Axes.ANCESTORORSELF, etc.
See Also: getExpression
Parameters: xctxt XPath runtime context.
Returns: the count of the nodes that match the test.
Parameters: xctxt The XPath runtime context. context The node to be tested.
Returns: {@link org.apache.xpath.patterns.NodeTest#SCORE_NODETEST}, {@link org.apache.xpath.patterns.NodeTest#SCORE_NONE}, {@link org.apache.xpath.patterns.NodeTest#SCORE_NSWILD}, {@link org.apache.xpath.patterns.NodeTest#SCORE_QNAME}, or {@link org.apache.xpath.patterns.NodeTest#SCORE_OTHER}.
Throws: javax.xml.transform.TransformerException
Parameters: i The index of the predicate.
Returns: A predicate expression.
Returns: the number of predicates for this match pattern step.
Returns: List of expression objects.
Parameters: xctxt XPath runtime context.
Returns: the proximity position index of the current node based on the node test.
Returns: The relative pattern expression.
Returns: local name or psuedo name of the node.
See Also: PsuedoNames
Parameters: axis The Axis for this test, one of of Axes.ANCESTORORSELF, etc.
See Also: setExpression
Parameters: predicates An array of expressions that define predicates for this step.
Parameters: expr The relative pattern expression.
Returns: A string representation of this step, built by reverse-engineering the contained info.