org.springframework.context.event

Class EventExpressionEvaluator

java.lang.Object

org.springframework.context.expression.CachedExpressionEvaluator

org.springframework.context.event.EventExpressionEvaluator

class EventExpressionEvaluator
extends CachedExpressionEvaluator

Utility class handling the SpEL expression parsing. Meant to be used as a reusable, thread-safe component.

Since:

4.2

Author:

Stephane Nicoll

See Also:

CachedExpressionEvaluator

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.context.expression.CachedExpressionEvaluator

CachedExpressionEvaluator.ExpressionKey

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<CachedExpressionEvaluator.ExpressionKey,Expression>	conditionCache
private java.util.Map<AnnotatedElementKey,java.lang.reflect.Method>	targetMethodCache

Constructor Summary

Constructors

Constructor and Description
EventExpressionEvaluator()

Method Summary

Modifier and Type	Method and Description
boolean	condition(java.lang.String conditionExpression, AnnotatedElementKey elementKey, EvaluationContext evalContext) Specify if the condition defined by the specified expression matches.
EvaluationContext	createEvaluationContext(ApplicationEvent event, java.lang.Class<?> targetClass, java.lang.reflect.Method method, java.lang.Object[] args, BeanFactory beanFactory) Create the suitable EvaluationContext for the specified event handling on the specified method.
private java.lang.reflect.Method	getTargetMethod(java.lang.Class<?> targetClass, java.lang.reflect.Method method)

Methods inherited from class org.springframework.context.expression.CachedExpressionEvaluator

getExpression, getParameterNameDiscoverer, getParser

Methods inherited from class java.lang.Object

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

Field Detail

conditionCache

private final java.util.Map<CachedExpressionEvaluator.ExpressionKey,Expression> conditionCache

targetMethodCache

private final java.util.Map<AnnotatedElementKey,java.lang.reflect.Method> targetMethodCache

Constructor Detail

EventExpressionEvaluator

EventExpressionEvaluator()

Method Detail

createEvaluationContext

public EvaluationContext createEvaluationContext(ApplicationEvent event,
                                                 java.lang.Class<?> targetClass,
                                                 java.lang.reflect.Method method,
                                                 java.lang.Object[] args,
                                                 @Nullable
                                                 BeanFactory beanFactory)

Create the suitable EvaluationContext for the specified event handling on the specified method.

condition

public boolean condition(java.lang.String conditionExpression,
                         AnnotatedElementKey elementKey,
                         EvaluationContext evalContext)

Specify if the condition defined by the specified expression matches.

getTargetMethod

private java.lang.reflect.Method getTargetMethod(java.lang.Class<?> targetClass,
                                                 java.lang.reflect.Method method)