org.apache.xpath.patterns
Class FunctionPattern

java.lang.Object
  org.apache.xpath.Expression
      org.apache.xpath.patterns.NodeTest
          org.apache.xpath.patterns.StepPattern
              org.apache.xpath.patterns.FunctionPattern

All Implemented Interfaces:

ExpressionNode, ExpressionOwner, Serializable, javax.xml.transform.SourceLocator, SubContextList, XPathVisitable

public class FunctionPattern

extends StepPattern

Match pattern step that contains a function.

See Also:

Serialized Form

Nested Class Summary

(package private) class

FunctionPattern.FunctionOwner

Nested classes inherited from class org.apache.xpath.patterns.StepPattern

StepPattern.PredOwner

Field Summary

(package private) Expression

m_functionExpr Should be a expression.

Fields inherited from class org.apache.xpath.patterns.StepPattern

m_axis, m_predicates, m_relativePathPattern, m_targetString

Fields inherited from class org.apache.xpath.patterns.NodeTest

m_name, m_namespace, m_score, m_whatToShow, SCORE_NODETEST, SCORE_NONE, SCORE_NSWILD, SCORE_OTHER, SCORE_QNAME, SHOW_BYFUNCTION, SUPPORTS_PRE_STRIPPING, WILD

Fields inherited from class org.apache.xpath.Expression

Constructor Summary

FunctionPattern(Expression expr, int axis, int predaxis)
Construct a FunctionPattern from a expression.

Method Summary

void	calcScore() Static calc of match score.
protected void	callSubtreeVisitors(XPathVisitor visitor) Call the visitor for the function.
XObject	execute(XPathContext xctxt) Test a node to see if it matches the given node test.
XObject	execute(XPathContext xctxt, int context) Test a node to see if it matches the given node test.
XObject	execute(XPathContext xctxt, int context, DTM dtm, int expType) Test a node to see if it matches the given node test.
void	fixupVariables(Vector vars, int globalsSize) This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time.

Methods inherited from class org.apache.xpath.patterns.StepPattern

calcTargetString, callVisitors, canTraverseOutsideSubtree, deepEquals, executePredicates, executeRelativePathPattern, getAxis, getExpression, getLastPos, getMatchScore, getPredicate, getPredicateCount, getPredicates, getProximityPosition, getRelativePathPattern, getTargetString, setAxis, setExpression, setPredicates, setRelativePathPattern, toString

Methods inherited from class org.apache.xpath.patterns.NodeTest

debugWhatToShow, getDefaultScore, getLocalName, getNamespace, getNodeTypeTest, getStaticScore, getWhatToShow, initNodeTest, initNodeTest, setLocalName, setNamespace, setStaticScore, setWhatToShow

Methods inherited from class org.apache.xpath.Expression

asIterator, asIteratorRaw, asNode, assertion, bool, error, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isNodesetExpr, isSameClass, isStableNumber, num, warn, xstr

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

m_functionExpr

Expression m_functionExpr

Should be a expression.

Constructor Detail

FunctionPattern

public FunctionPattern(Expression expr,
                       int axis,
                       int predaxis)

Construct a FunctionPattern from a expression.

Method Detail

calcScore

public final void calcScore()

Static calc of match score.

Overrides:

calcScore in class StepPattern

fixupVariables

public void fixupVariables(Vector vars,
                           int globalsSize)

This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time.

Overrides:

fixupVariables in class StepPattern

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.

execute

public XObject execute(XPathContext xctxt,
                       int context)
                throws javax.xml.transform.TransformerException

Test a node to see if it matches the given node test.

Overrides:

execute in class StepPattern

Parameters:

xctxt - XPath runtime context.

context - The current node context.

Returns:

NodeTest.SCORE_NODETEST, NodeTest.SCORE_NONE, NodeTest.SCORE_NSWILD, NodeTest.SCORE_QNAME, or NodeTest.SCORE_OTHER.

Throws:

javax.xml.transform.TransformerException

execute

public XObject execute(XPathContext xctxt,
                       int context,
                       DTM dtm,
                       int expType)
                throws javax.xml.transform.TransformerException

Test a node to see if it matches the given node test.

Overrides:

execute in class StepPattern

Parameters:

xctxt - XPath runtime context.

context - The currentNode.

dtm - The DTM of the current node.

expType - The expanded type ID of the current node.

Returns:

NodeTest.SCORE_NODETEST, NodeTest.SCORE_NONE, NodeTest.SCORE_NSWILD, NodeTest.SCORE_QNAME, or NodeTest.SCORE_OTHER.

Throws:

javax.xml.transform.TransformerException

execute

public XObject execute(XPathContext xctxt)
                throws javax.xml.transform.TransformerException

Test a node to see if it matches the given node test.

Overrides:

execute in class StepPattern

Parameters:

xctxt - XPath runtime context.

Returns:

NodeTest.SCORE_NODETEST, NodeTest.SCORE_NONE, NodeTest.SCORE_NSWILD, NodeTest.SCORE_QNAME, or NodeTest.SCORE_OTHER.

Throws:

javax.xml.transform.TransformerException

callSubtreeVisitors

protected void callSubtreeVisitors(XPathVisitor visitor)

Call the visitor for the function.

Overrides:

callSubtreeVisitors in class StepPattern