JAVA 集合+对象复制工具类

原创于 2024-07-04 09:48:36 发布

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#java #开发语言

JAVA 集合+对象复制工具类

在这里插入图片描述

import jakarta.annotation.Nullable;

import java.util.ArrayList;
import java.util.List;
import java.util.function.BiFunction;
import java.util.function.Consumer;


public class BeanUtil extends cn.hutool.core.bean.BeanUtil {

    /**
     * 数据拷贝
     */
    @Nullable
    public static <S, T> T copyProperties(S source, Class<T> tClass, BiFunction<S, T, T> function) {
        T t = copyProperties(source, tClass);
        if (t != null && function != null) {
            t = function.apply(source, t);
        }
        return t;
    }

    /**
     * 数据拷贝
     */
    public static <S, T> T copyProperties(S source, Class<T> tClass, @Nullable Consumer<T> consumer) {
        T t = copyProperties(source, tClass);
        if (t != null && consumer != null) {
            consumer.accept(t);
        }
        return t;
    }

    /**
     * 集合数据拷贝
     */
    public static <S, T> List<T> copyList(List<S> sources, Class<T> tClass) {
        return copyList(sources, tClass, result -> {
        });
    }

    /**
     * 集合数据拷贝
     */
    public static <S, T> List<T> copyList(List<S> sources, Class<T> tClass, @Nullable Consumer<T> consumer) {

        return copyList(sources, tClass, (src, target) -> {
            if (consumer != null) {
                consumer.accept(target);
            }
            return target;
        });

    }

    /**
     * 集合数据拷贝
     */
    public static <S, T> List<T> copyList(@Nullable List<S> sources, Class<T> tClass, BiFunction<S, T, T> function) {

        if (sources == null) {
            return null;
        }

        if (sources.isEmpty()) {
            return new ArrayList<>();
        }

        List<T> list = new ArrayList<>(sources.size());

        sources.forEach(src -> {
            T t = copyProperties(src, tClass, function);
            list.add(t);
        });

        return list;

    }

}