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 09:55:04 +0200 (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 Description

PredicateExpr()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	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