package com.ynxbd.common.helper.common;

import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.beanutils.BeanUtilsBean;
import org.apache.commons.beanutils.ConvertUtils;
import org.apache.commons.beanutils.converters.DateConverter;

import java.lang.reflect.Field;

public class CopyHelper {
    static {
        // 解决BigDecimal类型转化报错
        BeanUtilsBean.getInstance().getConvertUtils().register(false, false, 0);
        // 解决Date类型转化报错
        ConvertUtils.register(new DateConverter(null), java.util.Date.class);
    }

    /*
     * 将父类所有的属性COPY到子类中。
     * 类定义中child一定要extends father；
     * 而且child和father一定为严格javabean写法，属性为deleteDate，方法为getDeleteDate
     */
    public static <T> T fatherToChild(Object father, Class<T> childClazz) {
        if (father == null) {
            return null;
        }

        Class<?> fClazz = father.getClass();
        if (!(childClazz.getSuperclass() == fClazz)) {
            return null;
        }

        T bean = null;
        try {
            bean = childClazz.newInstance();

            for (Field f : fClazz.getDeclaredFields()) {
                f.setAccessible(true);
                BeanUtils.setProperty(bean, f.getName(), f.get(father));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return bean;
    }

    
}