程序包 cn.taketoday.core.annotation

接口 AnnotationsProcessor<C,R>

类型参数:

C - the context type

R - the result type

所有已知实现类:

TypeMappedAnnotations.AggregatesCollector, TypeMappedAnnotations.IsPresent, TypeMappedAnnotations.MergedAnnotationFinder

函数接口:

这是一个函数接口, 因此可用作 lambda 表达式或方法引用的赋值目标。

@FunctionalInterface
interface AnnotationsProcessor<C,R>

Callback interface used to process annotations.

从以下版本开始:

4.0

作者:

Phillip Webb

另请参阅:

• AnnotationsScanner
• TypeMappedAnnotations

方法概要

修饰符和类型	方法	说明
default R	doWithAggregate(C context, int aggregateIndex)	Called when an aggregate is about to be processed.
R	doWithAnnotations(C context, int aggregateIndex, Object source, Annotation[] annotations)	Called when an array of annotations can be processed.
default R	finish(R result)	Get the final result to be returned.

方法详细资料

doWithAggregate

@Nullable
default R doWithAggregate(C context,
 int aggregateIndex)

Called when an aggregate is about to be processed. This method may return a non-null result to short-circuit any further processing.

参数:

context - the context information relevant to the processor

aggregateIndex - the aggregate index about to be processed

返回:

a non-null result if no further processing is required

doWithAnnotations

@Nullable
R doWithAnnotations(C context,
 int aggregateIndex,
 @Nullable
 Object source,
 Annotation[] annotations)

Called when an array of annotations can be processed. This method may return a non-null result to short-circuit any further processing.

参数:

context - the context information relevant to the processor

aggregateIndex - the aggregate index of the provided annotations

source - the original source of the annotations, if known

annotations - the annotations to process (this array may contain null elements)

返回:

a non-null result if no further processing is required

finish

@Nullable
default R finish(@Nullable
 R result)

Get the final result to be returned. By default this method returns the last process result.

参数:

result - the last early exit result, or null if none

返回:

the final result to be returned to the caller