org.springframework.cache.interceptor
Class ExpressionEvaluator

java.lang.Object
  org.springframework.cache.interceptor.ExpressionEvaluator

 class ExpressionEvaluator
extends java.lang.Object

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

Performs internal caching for performance reasons.

Since:

3.1

Author:

Costin Leau

Field Summary

private java.util.Map<java.lang.reflect.Method,Expression>	conditionCache
private java.util.Map<java.lang.reflect.Method,Expression>	keyCache
private ParameterNameDiscoverer	paramNameDiscoverer
private SpelExpressionParser	parser
private java.util.Map<java.lang.reflect.Method,java.lang.reflect.Method>	targetMethodCache

Constructor Summary

ExpressionEvaluator()

Method Summary

boolean	condition(java.lang.String conditionExpression, java.lang.reflect.Method method, EvaluationContext evalContext)
EvaluationContext	createEvaluationContext(java.util.Collection<Cache> caches, java.lang.reflect.Method method, java.lang.Object[] args, java.lang.Object target, java.lang.Class<?> targetClass)
java.lang.Object	key(java.lang.String keyExpression, java.lang.reflect.Method method, EvaluationContext evalContext)

Methods inherited from class java.lang.Object

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

Field Detail

parser

private SpelExpressionParser parser

paramNameDiscoverer

private ParameterNameDiscoverer paramNameDiscoverer

conditionCache

private java.util.Map<java.lang.reflect.Method,Expression> conditionCache

keyCache

private java.util.Map<java.lang.reflect.Method,Expression> keyCache

targetMethodCache

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

Constructor Detail

ExpressionEvaluator

ExpressionEvaluator()

Method Detail

createEvaluationContext

public EvaluationContext createEvaluationContext(java.util.Collection<Cache> caches,
                                                 java.lang.reflect.Method method,
                                                 java.lang.Object[] args,
                                                 java.lang.Object target,
                                                 java.lang.Class<?> targetClass)

condition

public boolean condition(java.lang.String conditionExpression,
                         java.lang.reflect.Method method,
                         EvaluationContext evalContext)

key

public java.lang.Object key(java.lang.String keyExpression,
                            java.lang.reflect.Method method,
                            EvaluationContext evalContext)