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!734 update 重写selectOne方法

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* update 重写selectOne方法
This commit is contained in:
AprilWind 2025-07-30 02:46:51 +00:00 committed by 疯狂的狮子Li
parent 554152635d
commit f2e0361fb6
1 changed files with 30 additions and 8 deletions
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38
ruoyi-common/ruoyi-common-mybatis/src/main/java/org/dromara/common/mybatis/core/mapper/BaseMapperPlus.java
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@ -6,9 +6,11 @@ import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Constants;
import com.baomidou.mybatisplus.core.toolkit.reflect.GenericTypeUtils;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.toolkit.Db;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.logging.Log;
import org.apache.ibatis.logging.LogFactory;
import org.dromara.common.core.utils.MapstructUtils;
@ -130,7 +132,7 @@ public interface BaseMapperPlus<T, V> extends BaseMapper<T> {
* @return 查询到的单个VO对象
*/
default V selectVoById(Serializable id) {
return selectVoById(id, this.currentVoClass());
return this.selectVoById(id, this.currentVoClass());
}
/**
@ -156,7 +158,7 @@ public interface BaseMapperPlus<T, V> extends BaseMapper<T> {
* @return 查询到的VO对象列表
*/
default List<V> selectVoByIds(Collection<? extends Serializable> idList) {
return selectVoByIds(idList, this.currentVoClass());
return this.selectVoByIds(idList, this.currentVoClass());
}
/**
@ -182,7 +184,7 @@ public interface BaseMapperPlus<T, V> extends BaseMapper<T> {
* @return 查询到的VO对象列表
*/
default List<V> selectVoByMap(Map<String, Object> map) {
return selectVoByMap(map, this.currentVoClass());
return this.selectVoByMap(map, this.currentVoClass());
}
/**
@ -208,7 +210,7 @@ public interface BaseMapperPlus<T, V> extends BaseMapper<T> {
* @return 查询到的单个VO对象
*/
default V selectVoOne(Wrapper<T> wrapper) {
return selectVoOne(wrapper, this.currentVoClass());
return this.selectVoOne(wrapper, this.currentVoClass());
}
/**
@ -219,7 +221,7 @@ public interface BaseMapperPlus<T, V> extends BaseMapper<T> {
* @return 查询到的单个VO对象
*/
default V selectVoOne(Wrapper<T> wrapper, boolean throwEx) {
return selectVoOne(wrapper, this.currentVoClass(), throwEx);
return this.selectVoOne(wrapper, this.currentVoClass(), throwEx);
}
/**
@ -231,7 +233,7 @@ public interface BaseMapperPlus<T, V> extends BaseMapper<T> {
* @return 查询到的单个VO对象，经过类型转换为指定的VO类后返回
*/
default <C> C selectVoOne(Wrapper<T> wrapper, Class<C> voClass) {
return selectVoOne(wrapper, voClass, true);
return this.selectVoOne(wrapper, voClass, true);
}
/**
@ -251,13 +253,33 @@ public interface BaseMapperPlus<T, V> extends BaseMapper<T> {
return MapstructUtils.convert(obj, voClass);
}
/**
* 根据条件查询单条记录（自动限制返回 1 条数据，不依赖 {@code throwEx} 参数）
*
* <p>
* <strong>注意：</strong>
* 1. 使用 {@code Page<>(1, 1)} 强制分页查询，确保 SQL 自动添加 {@code LIMIT 1}，因此 {@code throwEx} 参数不再生效
* 2. 原方法的 {@code throwEx} 逻辑（多条数据抛异常）已被优化掉，因为分页查询不会返回多条记录
* </p>
*
* @param queryWrapper 查询条件（可为 null）
* @param throwEx <del>是否抛出异常（已弃用，此参数不再生效）</del>
* @return 单条记录或无数据时返回 null
*/
@Override
default T selectOne(@Param(Constants.WRAPPER) Wrapper<T> queryWrapper, boolean throwEx) {
// 强制分页查询（LIMIT 1），确保最多返回 1 条记录
List<T> list = this.selectList(new Page<>(1, 1), queryWrapper);
return CollUtil.isEmpty(list) ? null : list.get(0);
}
/**
* 查询所有VO对象列表
*
* @return 查询到的VO对象列表
*/
default List<V> selectVoList() {
return selectVoList(new QueryWrapper<>(), this.currentVoClass());
return this.selectVoList(new QueryWrapper<>(), this.currentVoClass());
}
/**
@ -294,7 +316,7 @@ public interface BaseMapperPlus<T, V> extends BaseMapper<T> {
* @return 查询到的VO对象分页列表
*/
default <P extends IPage<V>> P selectVoPage(IPage<T> page, Wrapper<T> wrapper) {
return selectVoPage(page, wrapper, this.currentVoClass());
return this.selectVoPage(page, wrapper, this.currentVoClass());
}
/**