top.klw8.alita.service.utils.EntityUtil Maven / Gradle / Ivy

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/*
 * Copyright 2018-2021, ranke ([email protected]).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package top.klw8.alita.service.utils;

import org.apache.commons.lang3.StringUtils;
import top.klw8.alita.entitys.base.BaseEntity;

import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.List;


/**
 * 实体工具
 * 2018年12月20日 下午2:26:43
 */
public class EntityUtil {

    /**
     * @param baseBean
     * @return
     * 检查实体是否没有主键
     */
    public static boolean isEntityNoId(BaseEntity baseBean) {
        return baseBean == null ? true : StringUtils.isBlank(baseBean.getId());
    }

    /**
     * @param baseBean
     * @return
     * 检查实体是否有主键
     */
    public static boolean isEntityHasId(BaseEntity baseBean) {
        return !isEntityNoId(baseBean);
    }

    /**
     * @param baseBean
     * @return true: 可以用于修改
     * false: 实体中只有ID其他都为null,或者ID都没有,不能用于修改 

     * 判断实体是否能用于修改的保存
     */
    public static  boolean isEntityCanModify(T baseBean) {
        if (baseBean.getId() == null) {
            return false;
        }
        boolean     isAllNull = true;
        List fieldList = Arrays.asList(baseBean.getClass().getDeclaredFields());
        for (Field field : fieldList) {
            if (field.getName().equals("serialVersionUID")) {
                continue;
            }
            if (field.getName().equals("id")) {
                continue;
            }
            field.setAccessible(true);
            Object value = null;
            try {
                value = field.get(baseBean);
            } catch (IllegalArgumentException | IllegalAccessException e) {
                e.printStackTrace();
            }
            if (value != null) {
                isAllNull = false;
            }
        }
        return !isAllNull;
    }

}