com.ximpleware.xpath
Class Expr

java.lang.Object
  com.ximpleware.xpath.Expr

Direct Known Subclasses:

LiteralExpr, NumExpr, UnaryExpr

public abstract class Expr
extends java.lang.Object

This is the abstract class on which all XPath expressions are based

Constructor Summary

Expr()

Method Summary

abstract int	adjust(int n)
abstract boolean	evalBoolean(VTDNav vn)
abstract int	evalNodeSet(VTDNav vn)
abstract double	evalNumber(VTDNav vn)
abstract java.lang.String	evalString(VTDNav vn)
abstract boolean	isBoolean()
abstract boolean	isNodeSet()
abstract boolean	isNumerical()
abstract boolean	isString()
abstract boolean	requireContextSize()
abstract void	reset(VTDNav vn)
abstract void	setContextSize(int size)
abstract void	setPosition(int pos)
abstract java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Expr

public Expr()

Method Detail

adjust

public abstract int adjust(int n)

evalBoolean

public abstract boolean evalBoolean(VTDNav vn)

evalNodeSet

public abstract int evalNodeSet(VTDNav vn)
                         throws XPathEvalException,
                                NavException

Throws:

XPathEvalException

NavException

evalNumber

public abstract double evalNumber(VTDNav vn)

evalString

public abstract java.lang.String evalString(VTDNav vn)

isBoolean

public abstract boolean isBoolean()

isNodeSet

public abstract boolean isNodeSet()

isNumerical

public abstract boolean isNumerical()

isString

public abstract boolean isString()

requireContextSize

public abstract boolean requireContextSize()

reset

public abstract void reset(VTDNav vn)

setContextSize

public abstract void setContextSize(int size)

setPosition

public abstract void setPosition(int pos)

toString

public abstract java.lang.String toString()

Overrides:

toString in class java.lang.Object