com.github.xiaolyuh.expression

类 CacheOperationExpressionEvaluator

java.lang.Object

org.springframework.context.expression.CachedExpressionEvaluator

com.github.xiaolyuh.expression.CacheOperationExpressionEvaluator

public class CacheOperationExpressionEvaluator
extends org.springframework.context.expression.CachedExpressionEvaluator

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

Performs internal caching for performance reasons using AnnotatedElementKey.

从以下版本开始:

3.1

作者:

Costin Leau, Phillip Webb, Sam Brannen, Stephane Nicoll

嵌套类概要

从类继承的嵌套类/接口 org.springframework.context.expression.CachedExpressionEvaluator

org.springframework.context.expression.CachedExpressionEvaluator.ExpressionKey

字段概要

字段

限定符和类型	字段和说明
static Object	NO_RESULT Indicate that there is no result variable.
static Object	RESULT_UNAVAILABLE Indicate that the result variable cannot be used at all.
static String	RESULT_VARIABLE The name of the variable holding the result object.

构造器概要

构造器

构造器和说明
CacheOperationExpressionEvaluator()

方法概要

限定符和类型	方法和说明
Object	cacheName(String expression, org.springframework.context.expression.AnnotatedElementKey methodKey, org.springframework.expression.EvaluationContext evalContext)
boolean	condition(String conditionExpression, org.springframework.context.expression.AnnotatedElementKey methodKey, org.springframework.expression.EvaluationContext evalContext)
org.springframework.expression.EvaluationContext	createEvaluationContext(Method method, Object[] args, Object target, Class<?> targetClass) Create an EvaluationContext without a return value.
org.springframework.expression.EvaluationContext	createEvaluationContext(Method method, Object[] args, Object target, Class<?> targetClass, Object result) Create an EvaluationContext.
Object	key(String expression, org.springframework.context.expression.AnnotatedElementKey methodKey, org.springframework.expression.EvaluationContext evalContext)
boolean	unless(String unlessExpression, org.springframework.context.expression.AnnotatedElementKey methodKey, org.springframework.expression.EvaluationContext evalContext)

从类继承的方法 org.springframework.context.expression.CachedExpressionEvaluator

getExpression, getParameterNameDiscoverer, getParser

从类继承的方法 java.lang.Object

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

字段详细资料

NO_RESULT

public static final Object NO_RESULT

Indicate that there is no result variable.

RESULT_UNAVAILABLE

public static final Object RESULT_UNAVAILABLE

Indicate that the result variable cannot be used at all.

RESULT_VARIABLE

public static final String RESULT_VARIABLE

The name of the variable holding the result object.

另请参阅:

常量字段值

构造器详细资料

CacheOperationExpressionEvaluator

public CacheOperationExpressionEvaluator()

方法详细资料

createEvaluationContext

public org.springframework.expression.EvaluationContext createEvaluationContext(Method method,
                                                                                Object[] args,
                                                                                Object target,
                                                                                Class<?> targetClass)

Create an EvaluationContext without a return value.

参数:

method - Method

args - Object[]

target - Object

targetClass - Class

返回:

EvaluationContext

另请参阅:

createEvaluationContext(Method, Object[], Object, Class, Object)

createEvaluationContext

public org.springframework.expression.EvaluationContext createEvaluationContext(Method method,
                                                                                Object[] args,
                                                                                Object target,
                                                                                Class<?> targetClass,
                                                                                Object result)

Create an EvaluationContext.

参数:

method - the method

args - the method arguments

target - the target object

targetClass - the target class

result - the return value (can be null) or NO_RESULT if there is no return at this time

返回:

the evaluation context

key

public Object key(String expression,
                  org.springframework.context.expression.AnnotatedElementKey methodKey,
                  org.springframework.expression.EvaluationContext evalContext)

cacheName

public Object cacheName(String expression,
                        org.springframework.context.expression.AnnotatedElementKey methodKey,
                        org.springframework.expression.EvaluationContext evalContext)

condition

public boolean condition(String conditionExpression,
                         org.springframework.context.expression.AnnotatedElementKey methodKey,
                         org.springframework.expression.EvaluationContext evalContext)

unless

public boolean unless(String unlessExpression,
                      org.springframework.context.expression.AnnotatedElementKey methodKey,
                      org.springframework.expression.EvaluationContext evalContext)