lux.xpath

Class PathStep

java.lang.Object

lux.xpath.AbstractExpression

lux.xpath.PathStep

All Implemented Interfaces:

Visitable

public class PathStep
extends AbstractExpression

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PathStep.Axis

Nested classes/interfaces inherited from class lux.xpath.AbstractExpression

AbstractExpression.Type

Field Summary

Fields inherited from class lux.xpath.AbstractExpression

subs, sup

Constructor Summary

Constructors

Constructor and Description
PathStep(PathStep.Axis axis, NodeTest nodeTest)

Method Summary

Methods

Modifier and Type	Method and Description
AbstractExpression	accept(ExpressionVisitor visitor)
PathStep.Axis	getAxis()
AbstractExpression	getLastContextStep() This method is called by the optimizer in order to determine an element or attribute QName (or wildcard) against which some expression is being compared, in order to generate an appropriate text query.
NodeTest	getNodeTest()
int	getPrecedence()
boolean	isDocumentOrdered()
void	toString(StringBuilder buf) Each subclass must implement the toString(StringBuilder) method by rendering itself as a syntatically valid XPath/XQuery expression in the given buffer.

Methods inherited from class lux.xpath.AbstractExpression

acceptSubs, appendSub, getBindingContext, getRoot, getSubs, getSuper, getTail, getType, isAbsolute, replaceRoot, setSubs, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

PathStep

public PathStep(PathStep.Axis axis,
        NodeTest nodeTest)

Method Detail

getAxis

public PathStep.Axis getAxis()

getNodeTest

public NodeTest getNodeTest()

toString

public void toString(StringBuilder buf)

Description copied from class: AbstractExpression

Each subclass must implement the toString(StringBuilder) method by rendering itself as a syntatically valid XPath/XQuery expression in the given buffer.

Specified by:

toString in class AbstractExpression

accept

public AbstractExpression accept(ExpressionVisitor visitor)

getPrecedence

public int getPrecedence()

Specified by:

getPrecedence in class AbstractExpression

Returns:

0

isDocumentOrdered

public boolean isDocumentOrdered()

Overrides:

isDocumentOrdered in class AbstractExpression

Returns:

whether this expression is proven to return results in document order. This method returns true iff all its subs return true, or it has none. Warning: incorrect results may occur if document-ordering is falsely asserted.

getLastContextStep

public AbstractExpression getLastContextStep()

Description copied from class: AbstractExpression

This method is called by the optimizer in order to determine an element or attribute QName (or wildcard) against which some expression is being compared, in order to generate an appropriate text query.

Overrides:

getLastContextStep in class AbstractExpression

Returns:

the rightmost path step in the context of this expression.