net.sourceforge.stripes.validation.expression

Class CommonsElExpressionExecutor

java.lang.Object

net.sourceforge.stripes.validation.expression.ExpressionExecutorSupport

net.sourceforge.stripes.validation.expression.CommonsElExpressionExecutor

All Implemented Interfaces:

ExpressionExecutor

public class CommonsElExpressionExecutor
extends ExpressionExecutorSupport

An implementation of ExpressionExecutor that relies on the Apache Commons EL implementation being available in the classpath. This is the case with Tomcat 5.5 and can be made so with other containers by including commons-el.jar in the web application's classpath.

Since:

Stripes 1.5

Author:

Tim Fennell

Nested Class Summary

Nested classes/interfaces inherited from class net.sourceforge.stripes.validation.expression.ExpressionExecutorSupport

ExpressionExecutorSupport.BeanVariableResolver

Field Summary

Fields

Modifier and Type	Field and Description
static String	COMMONS_CLASS The FQN of the expression evaluator class in commons-el.

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

ERROR_DEFAULT_SCOPE, ERROR_KEY, THIS

Constructor Summary

Constructors

Constructor and Description
CommonsElExpressionExecutor() Default constructor that checks to make sure this class can work, and if not throws an exception.

Method Summary

Methods

Modifier and Type	Method and Description
protected ExpressionEvaluator	getEvaluator() Attempts to create an expression evaluator by reflecting to find the implementation in the apache commons-el project.

Methods inherited from class net.sourceforge.stripes.validation.expression.ExpressionExecutorSupport

evaluate

Methods inherited from class java.lang.Object

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

Field Detail

COMMONS_CLASS

public static final String COMMONS_CLASS

The FQN of the expression evaluator class in commons-el.

See Also:

Constant Field Values

Constructor Detail

CommonsElExpressionExecutor

public CommonsElExpressionExecutor()

Default constructor that checks to make sure this class can work, and if not throws an exception.

Method Detail

getEvaluator

protected ExpressionEvaluator getEvaluator()

Attempts to create an expression evaluator by reflecting to find the implementation in the apache commons-el project.

Specified by:

getEvaluator in class ExpressionExecutorSupport

Returns:

an instance of ExpressionEvaluatorImpl if it can, null otherwise