cn.crane4j.core.support.aop

类 MethodArgumentAutoOperateSupport

java.lang.Object

cn.crane4j.core.support.aop.MethodArgumentAutoOperateSupport

直接已知子类:

ArgAutoOperateProxyMethodFactory

public class MethodArgumentAutoOperateSupport
extends Object

一个用于在方法调用前，根据AutoOperate注解的配置，对方法参数进行填充的辅助类。

在方法调用前，其将会把方法参数解析为一个需要进行填充的元素， 方法参数对应的AutoOperateAnnotatedElement数组将会被缓存，避免重复解析。
当方法被调用时，辅助类将根据配置对方法参数进行填充。

辅助类支持通过AutoOperate.condition()设置的条件表达式， 每次执行时都会通过MethodBasedExpressionEvaluator来进行求值， 只有当表达式返回true或者 "true" 字符串时，才会执行填充。

Support class for completing the operation of data from the method parameters which annotated by AutoOperate before the method is called.

Before the method is called, the method parameters will be resolved to AutoOperateAnnotatedElement array by AutoOperateAnnotatedElement, and then the AutoOperateAnnotatedElement array will be cached.
When the method is called, the AutoOperateAnnotatedElement array will be used to complete the operation of data from the method parameters.

Support expression for AutoOperate.condition(), if the expression is not empty, the expression will be evaluated by MethodBasedExpressionEvaluator, only when the expression returns true or "true", the operation will be applied.

作者:

huangchengxing

另请参阅:

AutoOperateAnnotatedElementResolver, MethodBasedExpressionEvaluator, AutoOperate, ArgAutoOperate

字段概要

字段

限定符和类型	字段和说明
protected AnnotationFinder	annotationFinder
protected AutoOperateAnnotatedElementResolver	elementResolver
protected static AutoOperateAnnotatedElement[]	EMPTY_ELEMENTS
protected MethodBasedExpressionEvaluator	expressionEvaluator
protected Map<Method,AutoOperateAnnotatedElement[]>	methodParameterCaches
protected ParameterNameFinder	parameterNameFinder

构造器概要

构造器

构造器和说明
MethodArgumentAutoOperateSupport(AutoOperateAnnotatedElementResolver elementResolver, MethodBasedExpressionEvaluator expressionEvaluator, ParameterNameFinder parameterNameFinder, AnnotationFinder annotationFinder) Create a MethodArgumentAutoOperateSupport instance.

方法概要

限定符和类型	方法和说明
void	beforeMethodInvoke(Method method, Object[] args) Before the method is called, process the input parameters of the method according to the configuration of ArgAutoOperate or AutoOperate annotation.
void	destroy() Clear resources when destroying the bean.
protected void	processArguments(Method method, Object[] args, AutoOperateAnnotatedElement[] autoOperateAnnotatedElements) Processing method input arguments.
protected AutoOperateAnnotatedElement[]	resolveParameters(Method method) Analyze the annotations on methods and method parameters to obtain the operation configuration of method parameters.

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

EMPTY_ELEMENTS

protected static final AutoOperateAnnotatedElement[] EMPTY_ELEMENTS

elementResolver

protected final AutoOperateAnnotatedElementResolver elementResolver

methodParameterCaches

protected final Map<Method,AutoOperateAnnotatedElement[]> methodParameterCaches

parameterNameFinder

protected final ParameterNameFinder parameterNameFinder

annotationFinder

protected final AnnotationFinder annotationFinder

expressionEvaluator

protected final MethodBasedExpressionEvaluator expressionEvaluator

构造器详细资料

MethodArgumentAutoOperateSupport

public MethodArgumentAutoOperateSupport(AutoOperateAnnotatedElementResolver elementResolver,
                                        MethodBasedExpressionEvaluator expressionEvaluator,
                                        ParameterNameFinder parameterNameFinder,
                                        AnnotationFinder annotationFinder)

Create a MethodArgumentAutoOperateSupport instance.

参数:

elementResolver - element handler

expressionEvaluator - expression evaluator delegate

parameterNameFinder - parameter name finder

annotationFinder - annotation finder

方法详细资料

beforeMethodInvoke

public final void beforeMethodInvoke(Method method,
                                     Object[] args)

Before the method is called, process the input parameters of the method according to the configuration of ArgAutoOperate or AutoOperate annotation.

参数:

method - method

args - args

processArguments

protected void processArguments(Method method,
                                Object[] args,
                                AutoOperateAnnotatedElement[] autoOperateAnnotatedElements)

Processing method input arguments.

参数:

method - method

args - args

autoOperateAnnotatedElements - resolved elements

resolveParameters

protected AutoOperateAnnotatedElement[] resolveParameters(Method method)

Analyze the annotations on methods and method parameters to obtain the operation configuration of method parameters.

参数:

method - method

返回:

operation configuration of method parameters, if not found, return EMPTY_ELEMENTS

另请参阅:

EMPTY_ELEMENTS

destroy

public void destroy()

Clear resources when destroying the bean.