Class EvaluationListener

java.lang.Object

jakarta.el.EvaluationListener

public abstract class EvaluationListener
extends Object

Listener interface for monitoring EL expression evaluation events. Implementations can track when expressions are evaluated and when properties are resolved during evaluation. Register an instance with an ELContext using ELContext.addEvaluationListener(EvaluationListener).

Since:

EL 3.0

Constructor Summary

Constructors

Constructor	Description
EvaluationListener()	Constructs an EvaluationListener.

Method Summary

Modifier and Type	Method	Description
void	afterEvaluation(ELContext context, String expression)	Fired after the evaluation of the expression.
void	beforeEvaluation(ELContext context, String expression)	Fired before the evaluation of the expression.
void	propertyResolved(ELContext context, Object base, Object property)	Fired after a property has been resolved.

Methods inherited from class Object

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

Constructor Details

EvaluationListener

public EvaluationListener()

Constructs an EvaluationListener.

Method Details

beforeEvaluation

public void beforeEvaluation(ELContext context,
 String expression)

Fired before the evaluation of the expression.

Parameters:

context - The EL context in which the expression will be evaluated

expression - The expression that will be evaluated

afterEvaluation

public void afterEvaluation(ELContext context,
 String expression)

Fired after the evaluation of the expression.

Parameters:

context - The EL context in which the expression was evaluated

expression - The expression that was evaluated

propertyResolved

public void propertyResolved(ELContext context,
 Object base,
 Object property)

Fired after a property has been resolved.

Parameters:

context - The EL context in which the property was resolved

base - The base object on which the property was resolved

property - The property that was resolved