SelectExpr

java.lang.Object

org.exolab.adaptx.xpath.engine.SelectExpr

All Implemented Interfaces:: XPathExpression

public final class SelectExpr extends Object implements XPathExpression

This class represents a SelectExpr

[1] SelectExpr ::= UnionExpr

Version:: $Revision: 3737 $ $Date: 2003-05-13 09:59:57 +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

SelectExpr()

Creates a new SelectExpr.
Method Summary

Modifier and Type

Method

Description

XPathResult

evaluate(XPathContext context)

Evaluates the expression and returns the XPath result.

short

getExprType()

Returns the type of this expression.

UnionExpr

getUnionExpr()

String

toString()

Returns the XPath expression as a string.

Methods inherited from class Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details
- SelectExpr
  
  public SelectExpr()
  
  Creates a new SelectExpr. This SelectExpr will select the empty node set by default.
Method Details
- toString
  
  public String toString()
  
  Description copied from interface: XPathExpression
  
  Returns the XPath expression as a string. The returned value is a valid XPath expression that can be parsed into an equivalent XPathExpression object.
  
  Specified by:
  
  toString in interface XPathExpression
  
  Overrides:
  
  toString in class Object
  
  Returns:
  
  The XPath expression as a string
- getExprType
  
  public short getExprType()
  
  Description copied from interface: XPathExpression
  
  Returns the type of this expression.
  
  Specified by:
  
  getExprType in interface XPathExpression
  
  Returns:
  
  The type of this expression
- evaluate
  
  public XPathResult evaluate(XPathContext context) throws XPathException
  
  Evaluates the expression and returns the XPath result.
  
  Specified by:
  
  evaluate in interface XPathExpression
  
  Parameters:
  
  context - The XPathContext to use during evaluation.
  
  Returns:
  
  The XPathResult (not null).
  
  Throws:
  
  XPathException - if an error occured while evaluating this expression.
- getUnionExpr
  
  public UnionExpr getUnionExpr()