Class PredicateExpr

java.lang.Object

org.exolab.adaptx.xpath.expressions.PredicateExpr

All Implemented Interfaces:

XPathExpression

public abstract class PredicateExpr
extends 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 09:55:04 +0200 (Tue, 13 May 2003) $

Author:

Keith Visco

Field Summary

Fields inherited from interface XPathExpression

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

Constructor Summary

Constructors

Constructor	Description
PredicateExpr()

Method Summary

Modifier and Type	Method	Description
abstract XPathExpression	getExpression()	Returns the actual XPathExpression for this predicate
final 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 Object

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

Methods inherited from interface XPathExpression

evaluate, toString

Constructor Details

PredicateExpr

public PredicateExpr()

Method Details

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