smsb-customer-manager-84/smsb-customer-manager-app/src/main/java/com/inspur/customer/utils/BeanCopyUtils.java

package com.inspur.customer.utils;

import com.google.common.collect.Lists;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.util.Assert;
import org.springframework.util.CollectionUtils;

import java.util.*;
import java.util.function.BiConsumer;
import java.util.function.Function;

/**
 * @author zengweijie
 * @version 1.0
 * @date 2022/9/20 13:51
 **/
@Slf4j
public class BeanCopyUtils {
    private BeanCopyUtils() {
    }

    public static <T, S> List<S> copyList(List<T> fromList, Class<S> toObj) {
        return copyList(fromList, toObj, null);
    }

    public static <T, S> List<S> copyList(List<T> fromList, Class<S> toObj, BiConsumer<T, S> afterPropertyCopied) {
        if (CollectionUtils.isEmpty(fromList)) {
            return Collections.emptyList();
        }
        if (null == toObj) {
            log.error("Utils-->copyList:toObj is null");
            return Collections.emptyList();
        }
        List<S> toList = Lists.newArrayListWithCapacity(fromList.size());
        fromList.forEach(f -> {
            S t;
            try {
                t = toObj.getDeclaredConstructor().newInstance();
            } catch (Exception e) {
                log.error(e.getMessage(), e);
                return;
            }
            BeanUtils.copyProperties(f, t);
            toList.add(t);
            Optional.ofNullable(afterPropertyCopied).ifPresent(c -> c.accept(f, t));
        });
        return toList;
    }

    public static <T, S> S copy(T t, Class<S> toObj) {
        return copy(t, toObj, null);
    }

    public static <T, S> S copy(T t, Class<S> toObj, BiConsumer<T, S> afterPropertyCopied) {
        Assert.notNull(toObj, "Utils-->copy:toObj is null");
        try {
            S s = toObj.getDeclaredConstructor().newInstance();
            if (Objects.nonNull(t)) {
                BeanUtils.copyProperties(t, s);
            }
            Optional.ofNullable(afterPropertyCopied).ifPresent(c -> c.accept(t, s));
            return s;
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            throw new RuntimeException(e);// NOSONAR
        }
    }

    public static <T, S> S copyIfNotNull(T t, Class<S> toObj) {
        if (Objects.isNull(t)) {
            return null;
        }
        return copy(t, toObj);
    }

    /**
     * 从哈希表中获取指定键列表对应的值列表，并将列表元素转换为指定的目标类型
     *
     * @param keyList 键列表
     * @param map     哈希表
     * @param toObj   指定的目标类型反射
     * @param <T>     值类型
     * @param <S>     指定目标类型
     * @param <K>     键类型
     * @return 哈希表中对应键集的成员集
     */
    public static <T, S, K> List<S> getFromMap(List<K> keyList, Map<K, T> map, Class<S> toObj) {
        return getFromMap(keyList, t -> t, map, toObj, null);
    }

    @Data
    @Builder
    @AllArgsConstructor
    @NoArgsConstructor
    public static class Entry<K, T> {
        private K key;
        private T value;
    }

    public static <T, S, K, V> List<S> getFromMap(List<K> keyList, Function<K, V> keyConverter, Map<V, T> map, Class<S> toObj, BiConsumer<Entry<K, T>, S> afterPropertyCopied) {
        return getFromMap(keyList, keyConverter, map, toObj, afterPropertyCopied, null);
    }

    public static <T, S, K, V> List<S> getFromMap(List<K> keyList, Function<K, V> keyConverter, Map<V, T> map, Class<S> toObj
        , BiConsumer<Entry<K, T>, S> afterPropertyCopied, BiConsumer<K, List<S>> onValueNotExists) {

        if (CollectionUtils.isEmpty(keyList)) {
            return Collections.emptyList();
        }

        if (null == toObj) {
            log.error("Utils-->copyList:toObj is null");
            return Collections.emptyList();
        }

        List<S> toList = Lists.newArrayListWithCapacity(keyList.size());

        keyList.forEach(key -> {
            S s;

            try {
                s = toObj.getDeclaredConstructor().newInstance();
            } catch (Exception e) {
                log.error(e.getMessage(), e);
                return;
            }

            Optional.ofNullable(map.get(keyConverter.apply(key))).ifPresentOrElse(value -> {
                BeanUtils.copyProperties(value, s);
                Optional.ofNullable(afterPropertyCopied).ifPresent(c -> c.accept(Entry.<K, T>builder().key(key).value(value).build(), s));
                toList.add(s);
            }, () -> Optional.ofNullable(onValueNotExists).ifPresent(kListBiConsumer -> kListBiConsumer.accept(key, toList)));
        });

        return toList;
    }
}