org.exolab.adaptx.xpath.expressions

Class PredicateExpr

java.lang.Object

org.exolab.adaptx.xpath.expressions.PredicateExpr

All Implemented Interfaces:

XPathExpression

public abstract class PredicateExpr
extends java.lang.Object
implements XPathExpression

This class represents an XPath predicate expression. This class handles predicates as a linked list of PredicateExpr, each containing the actual expression used during evaluation.

Version:

$Revision: 3734 $ $Date: 2003-05-13 03:55:04 -0400 (Tue, 13 May 2003) $

Author:

Keith Visco

Field Summary

Fields inherited from interface org.exolab.adaptx.xpath.XPathExpression

BOOLEAN, ERROR, FILTER_EXPR, LOCATION_PATH, NODE_TEST, NUMBER, PATH_EXPR, PRIMARY, STEP, STRING, UNION_EXPR

Constructor Summary

Constructors

Constructor and Description
PredicateExpr()

Method Summary

Methods

Modifier and Type	Method and Description
abstract XPathExpression	getExpression() Returns the actual XPathExpression for this predicate
short	getExprType() Returns the XPathExpression type
abstract PredicateExpr	getNext() Returns the next PredicateExpr for this PredicateExpr
abstract boolean	hasNext() Returns true if there are more predicate expressions

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.exolab.adaptx.xpath.XPathExpression

evaluate, toString

Constructor Detail

PredicateExpr

public PredicateExpr()

Method Detail

getExpression

public abstract XPathExpression getExpression()

Returns the actual XPathExpression for this predicate

Returns:

the XPathExpression for this predicate

getExprType

public final short getExprType()

Returns the XPathExpression type

Specified by:

getExprType in interface XPathExpression

Returns:

the XPathExpression type

getNext

public abstract PredicateExpr getNext()

Returns the next PredicateExpr for this PredicateExpr

hasNext

public abstract boolean hasNext()

Returns true if there are more predicate expressions

Returns:

true if there are more predicate expressions