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/*
 * Copyright (c) 2018-2019.‭‭‭‭‭‭‭‭‭‭‭‭[zuoqinggang] www.pingfangushi.com
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */


package cn.smallbun.scaffold.framework.common.toolkit;

import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.core.metadata.TableInfoHelper;
import org.springframework.util.StringUtils;

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

/**
 * 表工具类
 * @author SanLi
 * Created by [email protected] / [email protected] on 2019/5/17 18:45
 */
public class TableUtil {

	/**
	 * 根据字段名称获取字段
	 * @param aClass {@link Class} 类
	 * @param name {@link String} 字段名称
	 * @return  {@link Field}
	 * @throws NoSuchFieldException
	 */
	public static Field getField(Class aClass, String name) throws NoSuchFieldException {
		List fields = TableInfoHelper.getAllFields(aClass);
		for (Field field : fields) {
			if (field.getName().equals(name)) {
				return field;
			}
		}
		throw new NoSuchFieldException();
	}

	/**
	 * 根据字段名称获取表明
	 * @param aClass {@link Class} 类
	 * @param name {@link String} 字段名称
	 * @return  {@link Field}
	 * @throws NoSuchFieldException
	 */
	public static String getColumnName(Class aClass, String name) throws NoSuchFieldException {
		Field field = getField(aClass, name);
		if (field.getName().equals(name)) {
			TableField tableField = field.getAnnotation(TableField.class);
			if (StringUtils.isEmpty(tableField.value())) {
				return field.getName();
			}
			return tableField.value();
		}
		throw new NoSuchFieldException();
	}
}