net.sourceforge.stripes.validation.expression

Class Jsp21ExpressionExecutor

java.lang.Object

net.sourceforge.stripes.validation.expression.Jsp21ExpressionExecutor

All Implemented Interfaces:

ExpressionExecutor

public class Jsp21ExpressionExecutor
extends Object
implements ExpressionExecutor

An implementation of ExpressionExecutor that uses the new EL API available in Java EE 5 in the javax.el package. While more complicated that the JSP 2.0 API it has one advantage which is that it can be used without the need to allocate a PageContext object and without any other libraries being available.

Since:

Stripes 1.5

Author:

tfenne

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	Jsp21ExpressionExecutor.StripesELContext Implementation of the EL interface for managing expression context.
protected static class	Jsp21ExpressionExecutor.StripesELResolver Implementation of the EL interface to resolve variables.

Field Summary

Fields inherited from interface net.sourceforge.stripes.validation.expression.ExpressionExecutor

ERROR_DEFAULT_SCOPE, ERROR_KEY, THIS

Constructor Summary

Constructors

Constructor and Description
Jsp21ExpressionExecutor() Default constructor that throws an exception if the JSP2.1 APIs are not available.

Method Summary

Methods

Modifier and Type	Method and Description
void	evaluate(ActionBean bean, ParameterName name, List<Object> values, ValidationMetadata validationInfo, ValidationErrors errors) Performs validation of an ActionBean property using the expression contained within the validation metadata.
protected ExpressionFactory	getExpressionFactory() Creates an ExpressionFactory using the JspApplicationContext.

Methods inherited from class java.lang.Object

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

Constructor Detail

Jsp21ExpressionExecutor

public Jsp21ExpressionExecutor()

Default constructor that throws an exception if the JSP2.1 APIs are not available.

Method Detail

evaluate

public void evaluate(ActionBean bean,
            ParameterName name,
            List<Object> values,
            ValidationMetadata validationInfo,
            ValidationErrors errors)

Description copied from interface: ExpressionExecutor

Performs validation of an ActionBean property using the expression contained within the validation metadata. If the expression does not evaluate to true then an error will be added to the validation errors. Otherwise there are no side effects.

Specified by:

evaluate in interface ExpressionExecutor

Parameters:

bean - the ActionBean instance owning the field being validated

name - the name of the field being validated

values - the List of values (post type conversion), each to be validated

validationInfo - the validation metadata for the field

errors - the ValidationErrors object into which to place any errors

getExpressionFactory

protected ExpressionFactory getExpressionFactory()

Creates an ExpressionFactory using the JspApplicationContext.