feat: 优化链式调用，支持reduce操作和存在性判定
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wangyu
parent
dce7f7a63f
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7ac9fdd8e3
@ -53,6 +53,15 @@ public interface BeanPropertyAnnotations {
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*/
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<A extends Annotation> BeanPropertyAnnotationChain<A, MergedAnnotation<A>> as(Class<A> annotationType);
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/**
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* 判断某个注解是否存在，存在则交给consumer进行处理，仅取得找到的第一个注解
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*
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* @param annotationType 注解类型
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* @param <A> 泛型
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* @return 结果
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*/
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<A extends Annotation> BeanPropertyAnnotationChain<A, MergedAnnotation<A>> as(String annotationType);
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/**
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* 判断某个注解是否存在，存在则交给consumer进行处理，取得所有注解并自动判断复数形式
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*
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@ -80,6 +89,22 @@ public interface BeanPropertyAnnotations {
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*/
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boolean last();
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/**
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* 设置缓存的值
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*
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* @param value 值
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* @param <T> 值泛型
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*/
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<T> BeanPropertyAnnotations value(T value);
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/**
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* 返回上一步的值
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*
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* @param <T> 泛型
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* @return 结果
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*/
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<T> T value();
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/**
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* 返回空的运行链
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*
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@ -31,6 +31,7 @@ public class SimpleBeanPropertyAnnotations implements BeanPropertyAnnotations {
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private final EmptyAnnotationChain<? extends Annotation, ?> emptyChain = new EmptyAnnotationChain<>(this);
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private final EmptyAnnotationBatchChain<? extends Annotation, ?> emptyBatchChain = new EmptyAnnotationBatchChain<>(this);
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private boolean last;
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private Object value;
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SimpleBeanPropertyAnnotations(AnnotatedElement field) {
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this.field = field;
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@ -68,6 +69,7 @@ public class SimpleBeanPropertyAnnotations implements BeanPropertyAnnotations {
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* @return 结果
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*/
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@Override
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@SuppressWarnings("Duplicates")
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public <A extends Annotation> BeanPropertyAnnotationChain<A, MergedAnnotation<A>> as(Class<A> annotationType) {
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if (null != field && !this.last) {
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MergedAnnotation<A> annotation = this.annotations.get(annotationType);
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@ -78,6 +80,24 @@ public class SimpleBeanPropertyAnnotations implements BeanPropertyAnnotations {
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return empty();
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}
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/**
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* 判断某个注解是否存在，存在则交给consumer进行处理，仅取得找到的第一个注解
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*
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* @param annotationType 注解类型
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* @return 结果
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*/
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@Override
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@SuppressWarnings("Duplicates")
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public <A extends Annotation> BeanPropertyAnnotationChain<A, MergedAnnotation<A>> as(String annotationType) {
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if (null != field && !this.last) {
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MergedAnnotation<A> annotation = this.annotations.get(annotationType);
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if (annotation.isPresent()) {
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return new SimpleAnnotationChain<>(this.last(true), annotation);
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}
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}
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return empty();
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}
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/**
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* 判断某个注解是否存在，存在则交给consumer进行处理，取得所有注解并自动判断复数形式
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*
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@ -129,6 +149,27 @@ public class SimpleBeanPropertyAnnotations implements BeanPropertyAnnotations {
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return this.last;
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}
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/**
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* 设置缓存的值
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*
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* @param value 值
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*/
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@Override
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public <T> BeanPropertyAnnotations value(T value) {
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this.value = value;
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return this;
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}
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/**
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* 返回上一步的值
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*
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* @return 结果
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*/
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@Override
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public <T> T value() {
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return cast(value);
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}
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/**
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* 返回空的运行链
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*
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@ -145,7 +186,6 @@ public class SimpleBeanPropertyAnnotations implements BeanPropertyAnnotations {
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* @return 结果
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*/
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@Override
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public <A extends Annotation, E> BeanPropertyAnnotationBatchChain<A, E> batchEmpty() {
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return cast(emptyBatchChain);
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}
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@ -24,7 +24,16 @@ public interface AnnotationChainSupport {
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BeanPropertyAnnotations or();
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/**
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* 主动停止操作，会清空前面的状态
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* 当前值是否存在
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*
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* @return 结果
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*/
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void end();
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boolean isPresent();
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/**
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* 主动停止操作，会清空前面的状态
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*
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* @return 结束状态，true则是以值结束，false以空结束
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*/
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boolean end();
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}
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@ -64,12 +64,19 @@ public interface BeanPropertyAnnotationBatchChain<A extends Annotation, T> exten
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*/
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BeanPropertyAnnotationBatchChain<A, T> empty(Runnable fallback);
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/**
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* 将多值合并为单值
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*
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* @param reducer 合并器
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* @param <R> 返回泛型
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* @return 结果
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*/
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<R> BeanPropertyAnnotationChain<A, R> reduce(Function<List<T>, R> reducer);
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/**
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* 获取所有结果为list
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*
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* @return 结果
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*/
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List<A> synthesize();
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}
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@ -70,4 +70,10 @@ public interface BeanPropertyAnnotationChain<A extends Annotation, T> extends An
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*/
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A synthesize();
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/**
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* 获取缓存的值
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*
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* @return 结果
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*/
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T get();
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}
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@ -10,7 +10,7 @@ import lombok.RequiredArgsConstructor;
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* @author wangyu
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*/
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@RequiredArgsConstructor
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public class BasicAnnotationChainSupport implements AnnotationChainSupport {
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abstract class BasicAnnotationChainSupport implements AnnotationChainSupport {
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// 父级
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protected final BeanPropertyAnnotations parent;
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@ -22,7 +22,7 @@ public class BasicAnnotationChainSupport implements AnnotationChainSupport {
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*/
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@Override
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public BeanPropertyAnnotations and() {
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return parent.last(false);
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return cache().last(false);
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}
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/**
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@ -32,14 +32,23 @@ public class BasicAnnotationChainSupport implements AnnotationChainSupport {
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*/
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@Override
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public BeanPropertyAnnotations or() {
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return parent;
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return cache();
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}
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/**
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* 主动停止操作，会清空前面的状态
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*/
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@Override
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public void end() {
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parent.last(false);
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public boolean end() {
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boolean result = isPresent();
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parent.last(false).value(null);
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return result;
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}
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/**
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* 缓存值逻辑
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*
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* @return 父亲
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*/
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protected abstract BeanPropertyAnnotations cache();
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}
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@ -2,6 +2,7 @@ package dev.flyfish.framework.beans.meta.parser.chain.impl;
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import dev.flyfish.framework.beans.meta.parser.BeanPropertyAnnotations;
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import dev.flyfish.framework.beans.meta.parser.chain.BeanPropertyAnnotationBatchChain;
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import dev.flyfish.framework.beans.meta.parser.chain.BeanPropertyAnnotationChain;
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import java.lang.annotation.Annotation;
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import java.util.Collections;
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@ -94,6 +95,27 @@ public class EmptyAnnotationBatchChain<A extends Annotation, T> extends BasicAnn
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return this;
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}
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/**
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* 将多值合并为单值
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*
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* @param reducer 合并器
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* @return 结果
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*/
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@Override
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public <R> BeanPropertyAnnotationChain<A, R> reduce(Function<List<T>, R> reducer) {
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return parent.empty();
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}
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/**
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* 是否存在值
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*
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* @return 结果
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*/
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@Override
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public boolean isPresent() {
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return false;
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}
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/**
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* 获取所有结果为list
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*
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@ -104,4 +126,14 @@ public class EmptyAnnotationBatchChain<A extends Annotation, T> extends BasicAnn
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parent.last(false);
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return Collections.emptyList();
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}
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/**
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* 缓存值逻辑
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*
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* @return 父亲
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*/
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@Override
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protected BeanPropertyAnnotations cache() {
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return parent;
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}
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}
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@ -93,6 +93,16 @@ public class EmptyAnnotationChain<A extends Annotation, T> extends BasicAnnotati
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return this;
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}
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/**
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* 当前值是否存在
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*
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* @return 结果
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*/
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@Override
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public boolean isPresent() {
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return false;
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}
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/**
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* 直接获取结果
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*
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@ -102,4 +112,25 @@ public class EmptyAnnotationChain<A extends Annotation, T> extends BasicAnnotati
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public A synthesize() {
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return null;
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}
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/**
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* 获取当前数据
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*
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* @return 结果
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*/
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@Override
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public T get() {
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// 从空的占位访问，访问上次的结果
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return parent.value();
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}
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/**
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* 缓存值逻辑
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*
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* @return 父亲
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*/
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@Override
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protected BeanPropertyAnnotations cache() {
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return parent;
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}
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}
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@ -2,6 +2,7 @@ package dev.flyfish.framework.beans.meta.parser.chain.impl;
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import dev.flyfish.framework.beans.meta.parser.BeanPropertyAnnotations;
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import dev.flyfish.framework.beans.meta.parser.chain.BeanPropertyAnnotationBatchChain;
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import dev.flyfish.framework.beans.meta.parser.chain.BeanPropertyAnnotationChain;
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import org.springframework.core.annotation.MergedAnnotation;
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import org.springframework.util.CollectionUtils;
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@ -121,6 +122,28 @@ public class SimpleAnnotationBatchChain<A extends Annotation, T> extends BasicAn
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return this;
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}
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/**
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* 将多值合并为单值
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*
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* @param reducer 合并器
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* @return 结果
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*/
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@Override
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public <R> BeanPropertyAnnotationChain<A, R> reduce(Function<List<T>, R> reducer) {
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R reduced = reducer.apply(values);
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return new SimpleAnnotationChain<>(parent, reduced);
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}
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/**
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* 是否存在值
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*
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* @return 结果
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*/
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@Override
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public boolean isPresent() {
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return !CollectionUtils.isEmpty(values);
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}
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/**
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* 获取所有结果为list
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*
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@ -132,4 +155,14 @@ public class SimpleAnnotationBatchChain<A extends Annotation, T> extends BasicAn
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return mapped ? Collections.emptyList() : this.values.stream().map(item -> (MergedAnnotation<A>) item)
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.map(MergedAnnotation::synthesize).collect(Collectors.toList());
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}
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/**
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* 缓存值逻辑
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*
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* @return 父亲
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*/
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@Override
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protected BeanPropertyAnnotations cache() {
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return parent.value(values);
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}
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}
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@ -111,6 +111,16 @@ public class SimpleAnnotationChain<A extends Annotation, T> extends BasicAnnotat
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return this;
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}
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/**
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* 当前值是否存在
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*
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* @return 结果
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*/
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@Override
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public boolean isPresent() {
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return null != value;
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}
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/**
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* 直接获取结果
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*
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@ -122,4 +132,24 @@ public class SimpleAnnotationChain<A extends Annotation, T> extends BasicAnnotat
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parent.last(false);
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return value instanceof MergedAnnotation ? ((MergedAnnotation<A>) value).synthesize() : null;
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}
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/**
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* 获取缓存的值
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*
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* @return 结果
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*/
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@Override
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public T get() {
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return value;
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}
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/**
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* 缓存值逻辑
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*
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* @return 父亲
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*/
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@Override
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protected BeanPropertyAnnotations cache() {
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return parent.value(value);
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}
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}
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