cn.smallbun.scaffold.framework.mybatis.service.BaseServiceImpl Maven / Gradle / Ivy
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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 , T extends BaseEntity> extends ServiceImpl
implements BaseService {
/**
* 日志
*/
@SuppressWarnings("WeakerAccess")
public final Logger logger = LoggerFactory.getLogger(this.getClass());
/**
* 主键ID
*/
@SuppressWarnings("WeakerAccess")
public static final String ID = "id";
/**
* 分页查询
* @param page {@link PageModel}
* @return {@link IPage}
*/
@Override
public IPage page(PageModel page) {
try {
Page p = getPage(page);
//查询
logger.debug("{}", page);
return baseMapper.selectPage(p, new QueryWrapper<>());
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* 分页查询
* @param page {@link PageModel}
* @param wrapper {@link QueryWrapper}
* @return {@link IPage}
*/
@SuppressWarnings("DuplicatedCode")
@Override
public IPage page(PageModel page, Wrapper wrapper) {
try {
//构建Page对象
Page p = getPage(page);
logger.debug("{}{}", page, wrapper);
//查询
return baseMapper.selectPage(p, wrapper);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* 唯一记录
* @param t t
* @return boolean
*/
@Override
@Transactional(rollbackFor = Exception.class)
public boolean unique(T t) {
//构建查询条件,将实体转换为map ，不包含ID
QueryWrapper queryWrapper = new QueryWrapper().allEq(beanToMapExcludeId(t), false);
//查询
List ts = baseMapper.selectList(queryWrapper);
//表示为不是唯一
boolean flag = false;
//如果没有记录，唯一
if (CollectionUtils.isEmpty(ts)) {
flag = true;
}
//如果有记录
else {
//循环字段
for (T u : ts) {
for (Field f : getFieldAll(u)) {
//TODO 这里是针对修改的情况，获取ID字段的值，和当前ID字段值进行对比，如果ID相同，可以通过，如果不同，flag任为false
if (ID.equals(f.getName())) {
try {
f.setAccessible(true);
if (!StringUtils.isEmpty(t.getId())) {
if (t.getId().equals(f.get(u))) {
flag = true;
}
}
} catch (IllegalAccessException e) {
logger.error("method uniqueResult Exception{}", (Object) e.getStackTrace());
}
}
}
}
}
return flag;
}
/**
* mybatis plus bean 转 map,排除ID字段
* @param t T
* @return map
*/
private Map beanToMapExcludeId(T t) {
//构建查询条件
Map map = Maps.newHashMap();
TableInfo tableInfo = getTableInfo(t.getClass());
tableInfo.getFieldList().forEach(u -> getAllFields(t.getClass()).forEach(s -> {
try {
//暴力访问
s.setAccessible(true);
//其余字段
if (u.getProperty().equals(s.getName())) {
map.put(u.getColumn(), s.get(t));
}
} catch (Exception e) { e.printStackTrace(); }
}));
return map;
}
/**
* 封装分页数据和字段
* @param page {@link PageModel} page
* @return {@link Page}
*/
public Page getPage(PageModel page) {
try {
//构建Page对象
Page p = new Page<>();
//当前页
p.setCurrent(page.getCurrent());
//每页显示条数
p.setSize(page.getPageSize());
//获取到实体类，根据字段名称获取对应的数据库字段、
//为数据库表字段
if (org.apache.commons.lang3.StringUtils.isNotBlank(page.getSorter())) {
// 获取泛型类型
TableInfo tableInfo = getTableInfo(ReflectionUtil.getSuperClassGenricType(this.getClass(), 1));
//排序
List items = Lists.newArrayList();
//获取字段
tableInfo.getFieldList().forEach(i -> {
if (i.getProperty().equals(page.getSorter())) {
OrderItem order = new OrderItem();
order.setAsc(page.isAsc());
order.setColumn(i.getColumn());
items.add(order);
}
});
p.setOrders(items);
}
return p;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
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