Package org.apache.commons.jelly.expression.xpath

Class XPathExpression

java.lang.Object

org.apache.commons.jelly.expression.ExpressionSupport

org.apache.commons.jelly.expression.xpath.XPathExpression

All Implemented Interfaces:

Expression, org.jaxen.VariableContext

public class XPathExpression
extends ExpressionSupport
implements org.jaxen.VariableContext

An expression which returns an XPath object.

Version:

$Revision: 155420 $

Author:

James Strachan

Field Summary

Fields inherited from class org.apache.commons.jelly.expression.ExpressionSupport

EMPTY_ITERATOR

Fields inherited from interface org.apache.commons.jelly.expression.Expression

NULL

Constructor Summary

Constructors

Constructor	Description
XPathExpression()
XPathExpression(String text, Expression xpathExpr, TagScript tagScript)

Method Summary

Modifier and Type	Method	Description
protected Map	createUriMap(Map namespaceContext)	Factory method to create a synchronized Map of non-null and non-blank namespace prefixes to namespace URIs
Object	evaluate(JellyContext context)	Evaluates the expression with the given context and returns the result
String	getExpressionText()
Object	getVariableValue(String namespaceURI, String prefix, String localName)
String	toString()

Methods inherited from class org.apache.commons.jelly.expression.ExpressionSupport

evaluateAsBoolean, evaluateAsIterator, evaluateAsString, evaluateRecurse

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

XPathExpression

public XPathExpression()

XPathExpression

public XPathExpression(String text,
 Expression xpathExpr,
 TagScript tagScript)

Method Details

toString

public String toString()

Overrides:

toString in class Object

getExpressionText

public String getExpressionText()

Specified by:

getExpressionText in interface Expression

Returns:

the textual representation of this expression

evaluate

public Object evaluate(JellyContext context)

Description copied from interface: Expression

Evaluates the expression with the given context and returns the result

Specified by:

evaluate in interface Expression

getVariableValue

public Object getVariableValue(String namespaceURI,
 String prefix,
 String localName)

Specified by:

getVariableValue in interface org.jaxen.VariableContext

createUriMap

protected Map createUriMap(Map namespaceContext)

Factory method to create a synchronized Map of non-null and non-blank namespace prefixes to namespace URIs